RESTRICTED DISCLOSURE NOTICE ON PAGE 2



### P.O. BOX 3689 BRISTOL, TENNESSEE 37625-3689 USA TELEPHONE: 423- 538 -5151 TOLL FREE: 800-251- 7094 TELEFAX: 423- 538 -8469 E-MAIL: sales@aero-access.com

techsupport@aero-access.com 

# INSTRUCTIONS
for 

# CONTINUED AIRWORTHINESS

for 

# CROSSTUBES

STC: SR00646AT (LOW SKID GEAR) P/N 212- 320 -103 / 212- 320 -104 P/N 412- 320 -104 / 412- 320

- 154 STC: SR01052AT (HIGH SKID GEAR ) P/N 212- 321 -103 (S/N 1250 and Sub ) P/N 412- 321 -104 / 412- 321 -304 (S/N 1274 and Sub) FOR BELL HELICOPTER TEXTRON MODEL 205A, 205A-1, 205B
,

212, 412, 412EP, 412CF HELICOPTERS AGUSTA S.P.A. MODEL AB412, AB412EP HELICOPTERS

STC: SR01924AT (LOW OR HIGH SKID GEAR ) P/N 212- 321

- 103 (S/N 1250 and Sub) / 2 12

- 32 1- 104 FOR RESTRICTED CATEGORY UH-1B, UH-1H, SW204, SW205 GARLICK HELICOPTERS, US HELICOPTERS, INC., WESTERN INTERNATIONAL AVIATION, INC., SOUTHWEST FLORIDA AVIATION HELICOPTERS

Report Number AA-01136 Revision K February 15 , 2012BHT 205A, 205A

- 1, 205B INSTRUCTIONS for CONTINUED AIRWORTHINESS AA

- 01136 212, 412, 412EP, 412CF, CROSSTUBES Revision K AGUSTA AB412, AB412EP

, UH

- 1B, UH

- 1H, SW204, SW205

AERONAUTICAL ACCESSORIES February 15, 2012 Page 2 of 78 RESTRICTED DISCLOSUR E NOTICE

THE DRAWINGS, SPECIFICATIONS, DESCRIPTIONS, AND OTHER TECHNICAL DATA ATTACHED HERETO ARE PROPRIETARY AND CONFIDENTIAL TO BELL HELICOPTER TEXTRON, INC (BHTI) AND CONSTITUTE TRADE SECRETS FOR PURPOSES OF THE TRADE SECRET AND FREEDOM OF INFORMATION ACTS. NO DISCLOSURE TO OTHERS, EITHER IN THE UNITED STATES OR ABROAD, OR REPRODUCTION OF ANY PART OF THE INFORMATION SUPPLIED IS TO BE MADE, AND NO MANUFACTURE, SALE OR USE OF ANY INVENTION OR DISCOVERY DISCLOSED HEREIN SHALL BE MADE, EXCEPT BY WRITTEN AUTHORIZATION OF BHTI. THIS NOTICE WILL NOT OPERATE TO NULLIFY OR LIMIT RIGHTS GRANTED BY CONTRACT. THE DATA SUBJECT TO THIS RESTRICT ION J S CONTAINED IN ALL SHEETS AND IS DISCLOSED TO PERSONNEL OF BHTI, FOR THE PURPOSE(S) OF INTERNAL USE AND DISTRIBUTION ONLY.

© ( 2012 ) BHTI

UNPUBLISHED

– ALL RIGHTS RESERVEDBHT 205A, 205A

- 1, 205B INSTRUCTIONS for CONTINUED AIRWORTHINESS AA

- 01136 212, 412, 412EP, 412CF, CROSSTUBES Revision K AGUSTA AB412, AB412EP

, UH

- 1B, UH

- 1H, SW204, SW205

AERONAUTICAL ACCESSORIES February 15, 2012 Page 3 of 78 LOG OF REVISIONS

Date Revision Description Pages

09/04/01 NR Original Release All
02/21/02 A Deleted 3.1, 3.2, 3.3 5

– 7 Added 3.1, 3.1.1, 3.1.2, 3.2, 3.2.1, 3.2.2 6

– 9 Revised Crosstube weights in Table 6 19
04/22/02 B Deleted Figures 3 and 4 16 Added 412CF Model Effectivity, 205B & 412CF to report header, crosstube damage NOTE to 3.0, torque value to Table 2, 5.7 and 5.8, Figures 4 and 5 All, All, 6,10,14,19, 20 Revised 3.1.2 (#2, a) and 3.2.2 (#2, a), Table 1, Section 3.4 Repair, Figure 2 and Table 5, 212

- 320

- 104 weight in Table 6, 412 Low & 412 High Skid Crosstube Parts Lists in 12.0, Appendix A 7,8,9,10, 16,17,23,24 ,25,28 Changed Figure 5 to Figure 3 and added “205/212 ONLY” effectivity to Aft Crosstube Assembly, changed washer quantity in 212

- 320

- 203 Hardware Kit, changed part reference on Hardware Kit Table for 412

- 320

- 230 & 412

- 321

- 200 18, 25, 26

07/30/02 C Revised 3.1.2 (2, b), 3.2.2 (2, b), Table 2, 5.3 (3, Note), 5.4, 5.8 (Note), Figure 3, 12.0 Parts List, Appendix A 7,8,10,12 13,14,19, 25

– 27,31 Changed MIL Spec reference from MIL

- C

- 5541 to MIL

- DTL

- 81706, and MIL

- S

- 8802 to AMS

- S

- 8802 10, 12, 13, 14
08/29/06 D Reformatted, reorganized document All
Added UH

- 1H, SW205 model effectivity All Revised Section 1.0, Introduction 7 Revised Section 2.0, Description 7 Revised Table 1, Damage and Repair Limits: added metric equivalents 11

Revised Table 2, Torque Values: added metric equivalents 12 Added Section 5.9, Removal

– Plate Assembly 17 Added Section 5.10, Installation

– Plate Assembly 17
Deleted Section 8.0, Recommended Overhaul Periods; renumbered subsequent sections -

Section 8.0, Airworthiness Limitations: Incorporated information from (deleted) Recommended Overhaul Periods section 18

Revised Section 9.0, Weight and Balance: added metric equivalents 19 Revised Section 11.0, Parts Breakdown: reformatted, revised Tables 4 thru 11 20

– 25

Reorganized Figures 1 thru 7 36

– 32
06/24/09 E Reformatted, reorganized document. Incorporated engineering updates. Complete revision AllBHT 205A, 205A

- 1, 205B INSTRUCTIONS for CONTINUED AIRWORTHINESS AA

- 01136 212, 412, 412EP, 412CF, CROSSTUBES Revision K AGUSTA AB412, AB412EP

, UH

- 1B, UH

- 1H, SW204, SW205

AERONAUTICAL ACCESSORIES February 15, 2012 Page 5 of 78 LIST OF EFFECTIVE PAGES
All pages contained herein are at latest revision shown in Log of Revisions.

LIST OF EFFECTIVE PAGES 1

– 78BHT 205A, 205A

- 1, 205B INSTRUCTIONS for CONTINUED AIRWORTHINESS AA

- 01136 212, 412, 412EP, 412CF, CROSSTUBES Revision K AGUSTA AB412, AB412EP

, UH

- 1B, UH

- 1H, SW204, SW205

TABLE OF CONTENTS

Identification Title Page

AERONAUTICAL ACCESSORIES February 15, 2012 Page 6 of 78 1.0 INTRODUCTION

................................ ................................ ................................ 11 1.1 DISTRIBUTION

................................ ................................ ................................ .. 11 1.2 REVISION

................................ ................................ ................................ .......... 11 2.0 DESCRIPTION

................................ ................................ ................................ ... 11 3.0 M AINTENANCE INSTRUCTI ONS

................................ ................................ ...... 12 3.1 CROSSTUBE INSPECTION

– ALL

................................ ................................ .... 13 3.1.1 DAILY INSPECTION (SE RIES 1 INSPECTION) / / 25 HOUR / 30 DAY INSPECTION (SERIES 2 INSPECTION)

................................ ................. 14 3.1.2 100 HOUR / 12 CALEND AR MONTH INSPECTION (SERIES 1 INSPECTION) // 300 H OUR INSPECTION (SERI ES 2 INSPECTION)

... 14 3.2 CROSSTUBE INSPECTION , 212

- 321

- 103 HIGH FORWARD CRO SSTUBE ONLY

................................ ................................ ................................ ................. 15 3.2.1 AT 7500 TAKEOFF/LAND INGS AND FOLLOWING E VERY SUBSEQUENT 200 TAKEOFF/LANDINGS THE REAFTER VISUAL INSPECTION

................................ ................................ ........................... 15 3.2.2 AT 10,000 TAKEOFF/LA NDINGS AND FOLLOWING EVERY SUBSEQUENT 12 MONTH S OR 2500 TAKEOFF/LA NDINGS, WHICHEVER CO MES FIRST, THEREAFTE R DIMENSIONAL INSPECTION

................................ ................................ ........................... 16 3.2.3 AT 12,500 TAKEOFF/LA NDINGS AND EVERY SUB SEQUENT 5000 TAKEOFF/LANDINGS THE REAFTER INSPECTION A ND OVERHAUL 17 3.3 CROSSTUBE INSPECTION , 412

- 321

- 104 AND 412

- 321

- 304 HIGH AFT CROSSTUBES ONLY

................................ ................................ ....................... 20 3.3.1 AT 2500 TAKEOFF/LAND INGS AND FOLLOWING E VERY SUBSEQUENT 450 TAKE OFF/LANDINGS THEREAF TER VISUAL INSPECTION

................................ ................................ ........................... 20 3.3.2 AT 2500 TAKEOFF/LAND INGS AND EVERY 12 MO NTHS / 2500 TAKEOFF/LANDINGS, WH ICHEVER COMES FIRST, THEREAFTER DIMENSIONAL INSPECTI ON

................................ ................................ . 21 3.3.3 AT 7500 TAKEOFF/LAND INGS AND EVERY SUBSE QUENT 5000 TAKEOFF/LANDINGS THE REAFTER INSPECTION A ND OVERHAUL 22 3.4 HARD LA NDING CROSSTUBE DEFL ECTION INSPECTION

........................... 25 3.5 REPAIR

................................ ................................ ................................ .............. 26 3.6 CLEANING REQUIREMENT S

................................ ................................ ........... 27 3.7 ADJUSTMENTS

................................ ................................ ................................ . 27BHT 205A, 205A

- 1, 205B INSTRUCTIONS for CONTINUED AIRWORTHINESS AA

- 01136 212, 412, 412EP, 412CF, CROSSTUBES Revision K AGUSTA AB412, AB412EP

, UH

- 1B, UH

- 1H, SW204, SW205

TABLE OF CONTENTS

Identification Title Page

AERONAUTICAL ACCESSORIES February 15, 2012 Page 7 of 78 4.0 TROUBLESHOOTING INFO RMATION

................................ ............................. 28 5.0 REMOVAL AND REPLACEM ENT INFORMATION

................................ ............ 29 5.1 REMOVAL

– CROSSTUBES

................................ ................................ ............. 29 5.2 INSTALLATION

– CROSSTUBES

................................ ................................ ..... 29 5.3 REMOVAL

– CROSSTUBE SUPPORTS

................................ ........................... 30 5.4 INSTALLATION

– CROSSTUBE SUPPORTS

................................ ................... 30 5.5 REMOVAL

– BEAM ASSEMBLY

................................ ................................ ........ 31 5.6 INSTALLATION

– BEAM ASSEMBLY

................................ ................................ 31 5.7 REMOVAL

– CLAMP ASSEMBLY

................................ ................................ ..... 31 5.8 INSTALLATION

– CLAMP ASSEMBLY

................................ ............................. 32 5.9 REMOVAL

– PLATE ASSEMBLY

................................ ................................ ...... 32 5.10 INSTALLATION

– PLATE ASSEMBLY

................................ .............................. 32 6.0 STRUCTURAL FASTENER DATA

................................ ................................ ..... 33 7.0 SPECIAL TOOLS NEEDED

................................ ................................ ............... 33 8.0 TOWING AIRCRAFT

................................ ................................ .......................... 33 9.0 WEIGHT AND BALANCE

................................ ................................ ................... 33 9.1 LOW SKID GEAR CROSST UBE

................................ ................................ ........ 33 9.2 HIGH SKID GEAR CROSS TUBE

................................ ................................ ....... 33 10.0 AIRWORTHINESS LIMITA TIONS

................................ ................................ ...... 34 10.1 RETIREMENT LIFE

................................ ................................ ............................ 34 11.0 PARTS BREAKDOWN

................................ ................................ ....................... 35 11.1 LOW SKID GEAR PARTS BREAKDOWN

................................ .......................... 36 11.1.1 212

- 320 SERIES LOW GEAR CROSSTUBES

................................ ........ 36 11.1.2 412

- 320 SERIES LOW GEAR CROSSTUBES

................................ ........ 38 11.2 HIGH SKID GEAR PARTS BREAKDOWN

................................ ......................... 40 11.2.1 212

- 321 SERIES HIGH GEAR CROSSTUBES

................................ ....... 40 11.2.2 412

- 321 SERIES HIGH GEAR CROSS TUBES

................................ ....... 42 12.0 REFERENCE CROSSTUBE FIGURES

................................ ............................. 44BHT 205A, 205A

- 1, 205B INSTRUCTIONS for CONTINUED AIRWORTHINESS AA

- 01136 212, 412, 412EP, 412CF, CROSSTUBES Revision K AGUSTA AB412, AB412EP

, UH

- 1B, UH

- 1H, SW204, SW205

TABLE OF CONTENTS

Identification Title Page

AERONAUTICAL ACCESSORIES February 15, 2012 Page 8 of 78 APPENDIX A: DAILY (SERIES 1) // 25 HOU R / 30 DAY (SERIES 2 ) INSPECTION RECORD

................................ ................................ ................................ ............ 55 APPENDIX B: 1 00 HOUR / 12 MONTH ( SERIES 1) 300 HOUR ( SERIES 2) INSPECTION RECORD

................................ ................................ ..................... 57 APPENDIX C: AT 7500 TAKEOFF/LAND INGS // EVERY SUBSEQ UENT 200 TAKEOFF/LANDINGS 212

- 321

- 103 HIGH FORWARD CROSSTU BE ONLY INSPECTION RECORD

................................ ................................ ..................... 59 APPENDIX D: AT 10, 000 TAKEOFF/LANDINGS // EVERY SUBSEQUENT 12 MONTH / 2500 TAKEOF F/LANDINGS DIMENSION AL INSPEC TION 212

- 321

- 103 HIGH FORWARD CRO SSTUBE ONLY INSPECTI ON RECORD

............... 62 APPENDIX E: AT 12,500 TAKEOFF/LA NDINGS // EVERY SUBS EQUENT 5,000 TAKEOFF/LANDINGS 212

- 321

- 103 HIGH FORWARD CROSSTU BE ONLY INSPECTION/OVERHAUL RECORD

................................ ................................ 64 APPENDIX F: AT 250 0 TAKEOFF/LANDINGS / / EVERY SUBSEQUENT 4 50 TAKEOFF/LANDINGS 412

- 321

- 104 / 412

- 321

- 304 HIGH AFT CROSSTUBE ONLY INSPECTION RECO RD

................................ ................................ .......... 68 APPENDIX G: AT 2,5 00 TAKEOFF/LANDINGS // EVERY SUBSEQUENT 12 MONTH / 2,500 TAKEOFF/LAN DINGS DIMENSIONAL IN SPECTION 412

- 321

- 104 / 412

- 321

- 304 HIGH AFT CROSSTU BE ONLY INSPECTION R ECORD

................... 71 APPENDIX H: AT 7,5 00 TAKEOFF/LANDINGS // EVERY SUBSEQUENT 5,000 TAKEOFF/LANDINGS 412

- 321

- 104 / 412

- 321

- 304 HIGH AFT CROSSTU BE ONLY INSPECTION/OVER HAUL RECORD

................................ ...................... 73 APPENDIX I: HISTORICAL SERVICE R ECORD

................................ ........................ 77BHT 205A, 205A

- 1, 205B INSTRUCTIONS for CONTINUED AIRWORTHINESS AA

- 01136 212, 412, 412EP, 412CF, CROSSTUBES Revision K AGUSTA AB412, AB412EP

, UH

- 1B, UH

- 1H, SW204, SW205

LIST OF TABLES

Table Title Page

AERONAUTICAL ACCESSORIES February 15, 2012 Page 9 of 78 TABLE 1. DAMAGE AND REPAIR LIMITS

................................ ................................ .. 26 TABLE 2. TORQUE VAL UES

................................ ................................ ...................... 27 TABLE 3. TROUBLESHO OTING

................................ ................................ ................. 28 TABLE 4. PARTS BREA KDOWN, LOW SKID GEAR CROSSTUBES, 212

- 320

- 103 FORWARD / 212

- 320

- 104 AFT (1) CROSSTUBE ASSEMBLY

............................ 36 TABLE 5. PARTS BREA KDOWN, 212

- 320

- 203 / 212

- 320

- 207 HARDWARE KIT

....... 36 TABLE 6. PARTS BREA KDOWN, CROSSTUBE ASS EMBLIES 605

- 013

- 101 FORWARD // 605

- 015

- 101 (1) AFT

................................ ................................ ...... 37 TABLE 7. PARTS BREA KDOWN, LOW SKID GEAR AFT CROSSTUBES 412

- 320

- 104 (1) / 412

- 320

- 154 (1) AFT CROSSTUBE ASSEMB LIES

................... 38 TABLE 8. PARTS BREA KDOWN, 412

- 320

- 203 HARDWARE KIT

.............................. 38 TABLE 9. PARTS BREA KDOWN, 605

- 015

- 201 AFT CROSSTUBE ASSEMBLY

....... 39 TABLE 10. PARTS BRE AKDOWN, HIGH SKID GE AR CROSSTUBES, 212

- 321

- 103 FORWARD CROSSTUBE AS SEMBLY 212

- 321

- 104 (1) / 212

- 321

- 304 (1) AFT CROSSTUBE ASSEMBLY

................................ ................................ ................. 40 TABLE 11. PARTS BRE AKDOWN, 212

- 321

- 203 / 212

- 321

- 207 HARDWARE KIT

..... 40 TABLE 12. PARTS BRE AKDOWN, CROSSTUBE AS SEMBLIES 605

- 003

- 101 FORWARD // 605

- 005

- 101 (1) AFT CROSSTUBE ASSEMB LY

........................... 41 TABLE 13. PARTS BRE AKDOWN, HIGH SKID GE AR AFT CROSSTUBES, 412

- 321

- 106 (1) / 412

- 321

- 306 (1) AFT CROSSTUBE ASSEMB LY

....................... 42 TABLE 14. PARTS BRE AKDOWN, HIG H SKID GEAR AFT CROS STUBES, 412

- 321

- 104 (1) / 412

- 321

- 304 (1) AFT CROSSTUBE ASSEMB LY

....................... 42 TABLE 15. PARTS BRE AKDOWN, 412

- 321

- 200 HARDWARE KIT

............................ 43 TABLE 16. PARTS BRE AKDOWN, 605

- 005

- 201 AFT CROSSTUBE AS SEMBLY

..... 43BHT 205A, 205A

- 1, 205B INSTRUCTIONS for CONTINUED AIRWORTHINESS AA

- 01136 212, 412, 412EP, 412CF, CROSSTUBES Revision K AGUSTA AB412, AB412EP

, UH

- 1B, UH

- 1H, SW204, SW205 LIST OF FIGURES

Figure Title Page

AERONAUTICAL ACCESSORIES February 15, 2012 Page 10 of 7 8 FIGURE 1. CLEAR COA T AND INSPECTION ARE A, 212

- 321

- 103 HIGH FORWARD CROSSTUBE (S/N AA

- 1250 AND SUBSEQUENT)

................................ ........... 44 FIGURE 2. CLEAR COA T AND INSPECTION ARE A, 412

- 321

- 104 AND 412

- 321

- 304 HIGH AFT CROSSTUBE ( S/N AA

- 1274 AND SUBSEQUENT)

......................... 45 FIGURE 3 (SHEET 1 OF 2). CROSSTUBE DAMAG E LIMITS AND REPAIR ZONES 46 FIGURE 3 (SHEET 2 OF 2). CROSSTUBE DAMAG E LIMITS AND REPAIR Z ONES 47 FIGURE 4. CROSSTUBE DEFLECTION LIMITS

................................ ........................ 48 FIGURE 5. PAINT REM OVAL AREA, 212

- 321

- 103 HIGH FORWARD CRO SSTUBE 49 FIGURE 6. PAINT REM OVAL AREA, 412

- 321

- 104 / 412

- 321

- 304 HIGH AFT CROSSTUBE

................................ ................................ ................................ ..... 49 FIGURE 7. 212

- 321

- 103 HIGH FORWARD CRO SSTUBE ASSEMBLY

...................... 50 FIGURE 8. 212

- 321

- 104 / 212

- 321

- 304 HIGH AFT CROSSTU BE ASSEMBLY

.......... 51 FIGURE 9. 412

- 321

- 104 / 212

- 321

- 304 HIGH AFT CROSSTU BE ASSEMBLY

.......... 52 FIGURE 10. 412

- 320 /412

- 321 SERIES AFT CROSS TUBE ASSEMBLIES

................ 53 FIGURE 11. CROSSTUB E TO SKID TUBE ATTAC HMENT

................................ ....... 54BHT 205A, 205A

- 1, 205B INSTRUCTIONS for CONTINUED AIRWORTHINESS AA

- 01136 212, 412, 412EP, 412CF, CROSSTUBES Revision K AGUSTA AB412, AB412EP

, UH

- 1B, UH

- 1H, SW204, SW205

AERONAUTICAL ACCESSORIES February 15, 2012 Page 11 of 78 1.0 INTRODUCTION These instructions contain the information necessary for inspection and maintenance of AERONAUTICAL ACCESSORIE S REPLACEMENT CROSSTUBES installed on Bell Helicopter Textron model 205A, 205A

- 1, 205B, 212, 412, 412EP, 412CF; and Agusta model AB412, AB412EP he licopters in accordance with STC SR00646AT (Low Skid Gear) or SR01052AT (High Skid Gear) ; and on Restricted Category model UH

- 1B, UH

- 1H , SW204, and SW205 helicopters in accordance with STC SR01924AT High or Low Skid Gear

.

1.1 DISTRIBUTION

These instructions ar e provided with each Crosstube. Any airworthiness or flight safety revisions will be immediately made available to all affected Crosstube

owners.

1.2 REVISION
A Log of Revision sect ion J s included in these instructions and will be utilized to document all cha nges. Change recommendations should be submitted to: Aeronautical Accessories Bell Helicopter Piney Flats Technical Support P.O. Box 3689 Bristol, TN 37625

- 3689 Email: techsupport@aero

- access.com

2.0 DESCRIPTION

A eronautical Accessorie s Crosstubes are complete assemblies which include Crosstube Supports. As direct replacements for OEM crosstubes

, Aeronautical Accessories Crosstubes are interchangeable with Bell Helicopter and Agusta S.p.A. crosstubes for use with other OEM landing gear components. The Crosstubes are designed to provide an interface between the Landing Gear Skids and the helicopter and to absorb landing loads.

The Fo rward and Aft Crosstubes for model 205 and 21 2 helicopters are fitte d with two supports, which contact mating Support Fitting s in the helicopter
structure.

The Aft Crosstube for model 412 variant helicopters utilizes a Beam Assembly, which contacts mating Support Fittings in the helicopter structure. The function of the Beam Assembly on the Aft Crosstube is to reduce the possibility of ground

resonance.BHT 205A, 205A

- 1, 205B INSTRUCTIONS for CONTINUED AIRWORTHINESS AA

- 01136 212, 412, 412EP, 412CF, CROSSTUBES Revision K AGUSTA AB412, AB412EP

, UH

- 1B, UH

- 1H, SW204, SW205

AERONAUTICAL ACCESSORIES February 15, 2012 Page 12 of 78 3.0 MAINTENANCE INSTRUCT IONS

Maintenance Instructions for Aeronautical Accessories Crosstubes consist of two differ ing series of inspections

. Aeronautical Accessories S eries 1 and Series 2 Scheduled Inspections coincide with the Bell Helicopter Part A and Part B Scheduled Inspections for the convenience of the operator . Either inspection series may be employed. However, once a specific inspection series has been established, the helicopter shall remain on that specific inspection series except for the following

. NOTE Scheduled inspect ion i nterval tolerances shall be 10% or up to a maximum of 100 hours operating time / 30 calendar days, whichever is less.

1. If the Crosstubes ar e being reviewed on Series 1 Inspection and are desired to be changed to Series 2 Inspection, a complete 100 Hour / 12 Calendar Months Inspection shall be implemented before changing the helicopter to Series 2 beginning with the 25 Hour / 30 Day Inspection

. 2. If the Crosstubes are being reviewed on Series 2 Inspection and it is desired to change to Series 1 Inspection, a complete 300 Hour Inspection shall be implemented before changing the helicopter to Series 1 beginning with the Daily Inspection.

NOTE All C rosstube damage is unacceptable and shall be repaired. Refer to Table 1 for damage and repair limits and Section 3 for repair criteria.

NOTE If Crosstube repair is required, refer to Section 5 for removal of Crosstubes from helicopter.

NOTE The indications of corrosion are 1) corrosion deposits (a white or gray powder on aluminum), 2) pits in the aluminum surface, 3) blisters, bulging, or flaking of protective coatings.

CAUTION Helicopter towing operations must be conducted in accordance with the applicable aircraft model ’s Maintenance Manual. Manufacturer towing requirements are applicable to any aircraft being towed with weight on gear which includes towing aircraft with ground handling wheels installed or aircraft resting on moveable platforms . Failure to follow manufacturer towing instructions may result in crosstube damage and/or failure.BHT 205A, 205A

- 1, 205B INSTRUCTIONS for CONTINUED AIRWORTHINESS AA

- 01136 212, 412, 412EP, 412CF, CROSSTUBES Revision K AGUSTA AB412, AB412EP

, UH

- 1B, UH

- 1H, SW204, SW205

AERONAUTICAL ACCESSORIES February 15, 2012 Page 13 of 78 3.1 CROSSTUBE INSPECTION

– ALL Crosstubes shall be inspected utilizing Series 1 Inspection or Series 2 Inspection and applicable additional inspections as sum marized below.

NOTE Crosstube visual inspect ion J s conducted with aircraft at rest on skid landing gear; minimum gross weight at inspect ion J s 9,000 pounds.

NOTE P/N 412

- 321

- 104 High Aft Crosstubes

, serial number AA

- 1274 and subsequent

, and P/N 212

- 321

- 103 High Forward Crosstubes, serial number AA

- 1250 and subsequent, are manufactured with two primed and clear

- coated inspection areas.

CROSSTUBE INSPECTION S

ALL CROSSTUBES

Section Inspection

3.1.1 Daily Inspection (Series 1) // 25 Hour / 30 Day Inspection (Series 2)
3.1.2 100 Hour / 12 Calendar Month (Series 1) // 300 Hour (Series 2)
3. 4 Hard Landing Crosstube Deflect ion In spection

212

- 321

- 103 HIGH FORWARD CRO SSTUBES ONLY
3.2.1 At 7500 Takeoff/Landings and Following Every Subsequent 200

Takeoff/Landings Thereafter Visual Inspection
3.2.2 At 1 0,000 Takeoff/Landings and Following Every Subsequent 12 Month Or

2500 Takeoff / Landings, Whichever Comes First, Thereafter Dimensional Inspection
3.2.3 At 12,500 Takeoff/Landings and Following Every Subsequent 5000

Takeoff/Landings Thereafter Inspection and Overhaul

412

- 321

- 104 / 412

- 321

- 304 HIGH AFT CROSSTU BES ONLY
3. 3 .1 At 2500 Takeoff/Landings and Following Every Subsequent 450

Takeoff/Landings Thereafter Visual Inspection
3.3.2 At 2500 Takeoff/Landings and Following Every Subsequent 12 Month Or

2500 Takeoff/Landings, Whichever Comes First, Thereafter Dimensional Inspection
3.3.3 At 7500 Takeoff/Landings and Following Every Subsequent 5000

Takeoff/Landings Thereafter Inspection and OverhaulBHT 205A, 205A

- 1, 205B INSTRUCTIONS for CONTINUED AIRWORTHINESS AA

- 01136 212, 412, 412EP, 412CF, CROSSTUBES Revision K AGUSTA AB412, AB412EP

, UH

- 1B, UH

- 1H, SW204, SW205

AERONAUTICAL ACCESSORIES February 15, 2012 Page 14 of 78 3.1.1 DAILY INSPECTION ( SERIES 1 INSPECTION ) // 25 HOUR / 30 DAY INS PECTION ( SERIES 2 INSPECTION )

1. Inspect the Crosstubes for condition.

2. Inspect Crosstube Supports for condition and security of attachment (evidence of debonding and/or movement).

NOTE If any evidence of debonding and/or movement of the Upper and Lower Supports are found, complete the Support removal and rebonding procedures, Section 5

. 3. V isually inspect Crosstube inspection windows , as applicable, for evidence of cracking

. 4. Utilize the Inspection Record provided in Appendix A to document inspection.

3.1.2 100 HOUR / 12 CALENDAR MONTH INSPECTION ( SERIES 1 INSPECTION ) // 300 HOUR INSPECTION (SERIES 2 INSPECTION )

1. Perform Daily Inspection (Series 1 Inspection) / / 25 hour / 30 Day Inspection (Series 2 Inspection)

. 2. Inspect forward and aft caps holding Crosstubes to helicopter for security, and the rubber pads for looseness and/or deterioration.

3. Visually inspect Crosstubes for damage as follows:

NOTE Particular care should be taken to inspect in the areas of the Supports at the aircraft attach points.

a. Inspect the Crosstube for scratches, nicks, dents, and corrosion and note the depth of the damage. (Refer to the zones and limits shown in Figure 3 .) The minimal longitudinal distance be tween repairs is 3.0 inches. Crosstubes exceeding the damage limits shown in Table 1 must be replaced.

NOTE The limits of the damage are also restricted axially and radially as shown in Figure 3

. b. Visually inspect the Supports for nicks, dents, and corrosi on. Support damage and repair limits: .020 in. depth for a maximum area of 1.0 square inch. No more than two repairs per support are allowed. Replace Support if damaged beyond limits.

4. Check the torque [ 80

– 100 in

- lbs ( 9.0

– 11.3 Nm) ] on the U

- bolts that attach the Supports

. Re

- torque if necessary

. 5. Utilize the Inspection Record provided in Appendix B to document inspection.BHT 205A, 205A

- 1, 205B INSTRUCTIONS for CONTINUED AIRWORTHINESS AA

- 01136 212, 412, 412EP, 412CF, CROSSTUBES Revision K AGUSTA AB412, AB412EP

, UH

- 1B, UH

- 1H, SW204, SW205

AERONAUTICAL ACCESSORIES February 15, 2012 Page 15 of 78 3.2 CROSSTUBE INSPECTION
, 212

- 321

- 103 HIGH FORWARD CRO SSTUBE ONLY

3.2.1 AT 7500 TAKEOFF/LANDING S AND FOLLOWING EVERY SUBSEQUENT 200 TAK EOFF/LANDINGS THEREAFTER VISUAL INSPECTION (See Figure 1 .)

1. Use MIL

- PRF

- 87937 cleaning compound prepared in accordance with the manufacturer’s recommendations to clean all residue and dirt from the cross tube surfaces shown in Figure 1

. 2. Using at least 10X m agnification and a strong light source, visually inspect the clear coated crosstube areas for indications of cracking.

3. If cracking is suspected, remove clear coat and primer per steps 4 thru 6 below and inspect per step 7

. WARNING IF CRACKING IS DISCOVERED, THE CROSSTUBE IS NO LONGER AIRWORTHY AND MUST BE IMMEDIATELY REPLACED. REMOVE AND REPLACE CROSSTUBE PER SECTION 5 OF THIS REPORT.

4. Apply MIL

- R

- 81294, Type I or II chemical paint remover with a brush and allow it to set from 15 to 45 minutes to soften paint.

5. Using a stiff fiber brush and clean water, rinse paint from crosstube. If required, use abrasive pad (Scotch

- Brite, Type A) and MIL

- R

- 81294, Type I or II chemical paint remover to aid in lifting paint. Brush crosstube with abrasive pad in the longitudinal direction, using care so as not to abrade crosstube metal surface.

WARNING DO NOT SAND CROSSTUBE IN A CIRCUMFERENTIAL DIRECTION.

6. Rinse part clean with clean water and dry thoroughly.

NOTE Reapplication of chemical paint remover may be required to ensure that paint and primer is completely removed so that the metal surface of the cross tube is clearly visib le. If required, repeat steps 4 thru 6

. 7. Using at least 10X magnification and a strong light source, visually inspect the stripped areas for indications of cracking. If cracking is suspected, fluorescent penetrant inspect crosstube per ASTM E1417, Type I, Method B, C, or D, Level 2 in accordance with Bell Helicopter Standard Practices Manual (BHT

- ALL

- SPM).BHT 205A, 205A

- 1, 205B INSTRUCTIONS for CONTINUED AIRWORTHINESS AA

- 01136 212, 412, 412EP, 412CF, CROSSTUBES Revision K AGUSTA AB412, AB412EP

, UH

- 1B, UH

- 1H, SW204, SW205

AERONAUTICAL ACCESSORIES February 15, 2012 Page 16 of 78 WARNING IF CRACKING IS DISCOVERED, THE CROSSTUBE IS NO LONGER AIRWORTHY AND MUST BE IMMEDIATELY REPLACED. REMOVE AND REPLACE CROSSTUBE PER SECTION 5 OF THIS REPORT

. 8. Following crosstube inspe ction, coat the stripped crosstube area with MIL

- PRF

- 85582 primer (.0006

– .0009 thick) by spraying in accordance with manufacturer’s instructions. Allow primer to cure per manufacturer instructions.

NOTE The MIL

- PRF

- 85582 primer (PRC

- DeSoto EWDE 072A/B) [packaged as a 1

- gallon, 1

- qt (Parts A&B) kit (P/N EWDE072)] and the MIL

- PRF

- 85285, Type I clear coat paint (Deft 03X085) [packaged as a 3

- qt kit (P/N MIL

- PRF

- 85285)] may be procured from a Bell Helicopter Supply Center. The primer and paint may also be procured [packaged in 1

- qt, primer and paint, kits (P/N 1272K)] from Aerospace Products, Inc., 6413 Midway Road, Halton City, TX 76117 (817

- 332

- 1669).

9. Following primer cure, paint the area with MIL

- PRF

- 85285 polyurethane clear coat paint by spraying in ac cordance with manufacturer’s instructions. Allow paint to cure per manufacturer instructions.
Utilize the Inspection Record provided in Appendix C to document inspection.

3.2.2 AT 10,000 TAKEOFF/LA NDINGS AND FOLLOWING EVERY SUBSEQUENT 12 MONTHS OR 2500 TA KEOF F/LANDINGS, WHICHEVE R COMES FIRST, THEREAFTER DIMENSION AL INSPECTION

1. Perform Hard Landing Crosstube Deflect ion In spection per Section 3. 4

. 2. Utilize the Inspecti on Record provided in Appendix D to document inspection.BHT 205A, 205A

- 1, 205B INSTRUCTIONS for CONTINUED AIRWORTHINESS AA

- 01136 212, 412, 412EP, 412CF, CROSSTUBES Revision K AGUSTA AB412, AB412EP

, UH

- 1B, UH

- 1H, SW204, SW205

AERONAUTICAL ACCESSORIES February 15, 2012 Page 17 of 78 3.2.3 AT 12,500 TAKEOFF/LA NDINGS AND EVERY SU BSEQUENT 5000 TAKEOFF/LANDING S THEREAFTER INSPECTION AND OVERH AUL (See Figure s 1 and 5 .)

NOTE Neither the assignment of a time period overhaul of a component nor failure to assign a time period for overhaul of a component constitutes a warranty of any kin d. The only warranty applicable to the component is that warranty included in the Purchase Agreement for the component. Time between overhauls and inspection periods is based upon experience, testing, and engineering judgment and is subject to change at the sole discretion of Aeronautical Accessories or an appropriate government agency

. WARNING ALL PARTS REMOVED, DUE TO REACHING THEIR LIMITS OR AS A RESULT OF AN ACCIDENT/INCIDENT AND DEEMED UNAIRWORTHY, SHALL BE PERMANENTLY MARKED AS SCRAP OR PHYSICALLY DESTROYED TO THE EXTENT THAT THERE IS NO CHANCE OF REPAIR OR INSTALLATION ON ANY HELICOPTER OR COMPONENT.

1. Remove fairings from Forward Crosstube Assembly, if installed.

2. Hoist or jack the helicopter until no weight is on the skid tubes.

3. Remove forward straps and associated hardware from forward fuselage fittings.

4. Remove aft straps and associated hardware from aft fuselage fittings.

5. Raise helicopter until it is clear of skid landing gear, and remove landing
gear.

6. Remove crosstube supports from Forward Cr osstube Assembly in accordance with Section 5

. WARNING DO NOT SAND CROSSTUBE IN A CIRCUMFERENTIAL DIRECTION.BHT 205A, 205A

- 1, 205B INSTRUCTIONS for CONTINUED AIRWORTHINESS AA

- 01136 212, 412, 412EP, 412CF, CROSSTUBES Revision K AGUSTA AB412, AB412EP

, UH

- 1B, UH

- 1H, SW204, SW205

AERONAUTICAL ACCESSORIES February 15, 2012 Page 18 of 78

7. Remove aged sealant from Crosstube by scraping with a sharp piece of plastic. Use of a heat gun to soften the sealant may facilitate removal

. Fin ish by lightly sanding with 400 grit abrasive cloth or paper in the longitudinal direction of the crosstube

. 8. Prepare crosstube by chemically removing crosstube paint and primer to top of saddles

.

a. Apply MIL

- R

- 81294, Type I or II chemical paint remover with a brush and allow it to set from 15 to 45 minutes to soften paint.

b. Using a stiff fiber brush and clean water, rinse paint from crosstube. If required, use abrasive pad (Scotch

- Brite, Type A) and MIL

- R

- 81294, Type I or II chemical paint remover to aid in lifting paint. Brush crosstube with abrasive pad in the longitudinal direction, using care so as not to abrade crosstube metal surface

. WARNING DO NOT SAND CROSSTUBE IN A CIRCUMFERENTIAL DIRECTION.

c. Rinse part clean with clean water and dry thoroughly. R eapplication of chemical paint remover may be required to ensure that paint and primer is completely removed so that the (bare) metal surface of the cross tube is clearly visible

9. When crosstube is not to be processed immediately after cleaning, apply

corro sion preventive oil, to all parts to protect against corrosion. Wrap parts in barrier material and secure with tape

. 10. I nspect the stripped areas of the Crosstubes using fluorescent penetrant method per ASTM E1417, Type I, Method B, C, or D, Level 2, in ac cordance with Bell Helicopter Standard Practices Manual (BHT

- ALL

- SPM). Refer to BHT

- ALL

- SPM for fluorescent penetrant inspection procedures.

WARNING IF CRACKING IS DISCOVERED, THE CROSSTUBE IS NO LONGER AIRWORTHY AND MUST BE IMMEDIATELY REPLACED. REMOVE AND REPLACE CROSSTUBE PER SECTION 5 OF THIS REPORT

. 11. Repair damage within repairable limits in accord ance with Section 3

.BHT 205A, 205A

- 1, 205B INSTRUCTIONS for CONTINUED AIRWORTHINESS AA

- 01136 212, 412, 412EP, 412CF, CROSSTUBES Revision K AGUSTA AB412, AB412EP

, UH

- 1B, UH

- 1H, SW204, SW205

AERONAUTICAL ACCESSORIES February 15, 2012 Page 19 of 78

12. Refinish crosstube by applying MIL

- PRF

- 85582 primer and MIL

- PRF

- 85285 paint (or equivalent) per manufacturer instructions to the stri pped areas. The areas to be inspected per Section 3 should be masked to omit MIL

- PRF

- 85285 paint as shown in Figure 1 . Paint inspection areas with MIL

- PRF

- 85285 Type I Gloss Clear coat per manufacturer instructions and Figure 1

. 13. Reinstall Forward Crosstub e straps and fittings per Section 5

. 14. Reinstall landing gear/Crosstubes to aircraft per Section 5

. 15. Reinstall fairings, as applicable, and r eturn aircraft to service

. 16. Utilize the Inspection Record provided in Appendix E to document inspection.BHT 205A, 205A

- 1, 205B INSTRUCTIONS for CONTINUED AIRWORTHINESS AA

- 01136 212, 412, 412EP, 412CF, CROSSTUBES Revision K AGUSTA AB412, AB412EP

, UH

- 1B, UH

- 1H, SW204, SW205

AERONAUTICAL ACCESSORIES February 15, 2012 Page 20 of 78 3.3 CROSSTUBE INSPECTION
, 412

- 321

- 104 AND 412

- 321

- 304 HIGH AFT CROSSTUBE S ONLY

3.3.1 AT 2500 TAKEOFF/LAND INGS AND FOLLOWING E VERY SUBSEQUENT 450 TAKEOFF/LANDINGS THEREAFTER VISUAL IN SPECTION ( See F igure 2 .)

1. Use MIL

- PRF

- 87937 cleaning compound prepared in accordance with the manufacturer’s recommendations to clean all residue and dirt from the cross tube surfaces shown in Figure 2

. 2. Using at least 10X magnification and a strong light source, visually inspect the clear coated crosstube areas for indications of cracking.

3. If crac king is suspected, remove clear coat and primer per steps 4 thru 6 below and inspect per step 7

. WARNING IF CRACKING IS DISCOVERED, THE CROSSTUBE IS NO LONGER AIRWORTHY AND MUST BE IMMEDIATELY REPLACED. REMOVE AND REPLACE CROSSTUBE PER SECTION 5 OF THIS R EPORT.

4. Apply MIL

- R

- 81294, Type I or II chemical paint remover with a brush and allow it to set from 15 to 45 minutes to soften paint.

5. Using a stiff fiber brush and clean water, rinse paint from crosstube. If required, use abrasive pad (Scotch

- Brite, Typ e A) and MIL

- R

- 81294, Type I or II chemical paint remover to aid in lifting paint. Brush crosstube with abrasive pad in the longitudinal direction, using care so as not to abrade crosstube metal surface.

WARNING DO NOT SAND CROSSTUBE IN A CIRCUMFERENTIA L DIRECTION.

6. Rinse part clean with clean water and dry thoroughly.

NOTE Reapplication of chemical paint remover may be required to ensure that paint and primer is completely removed so that the metal surface of the cross tube is clearly visib le. If
requ ired, repeat steps 4 thru 6

. 7. Using at least 10X magnification and a strong light source, visually inspect the stripped areas for indications of cracking. If cracking is suspected, fluorescent penetrant inspect crosstube per ASTM E1417, Type I, Method B, C , or D, Level 2 in accordance with Bell Helicopter Standard Practices Manual (BHT

- ALL

- SPM).BHT 205A, 205A

- 1, 205B INSTRUCTIONS for CONTINUED AIRWORTHINESS AA

- 01136 212, 412, 412EP, 412CF, CROSSTUBES Revision K AGUSTA AB412, AB412EP

, UH

- 1B, UH

- 1H, SW204, SW205

AERONAUTICAL ACCESSORIES February 15, 2012 Page 21 of 78 WARNING IF CRACKING IS DISCOVERED, THE CROSSTUBE IS NO LONGER AIRWORTHY AND MUST BE IMMEDIATELY REPLACED. REPLACE CROSSTUBE PER SECTION 5 OF THIS REPORT

. 8. Followi ng crosstube inspection, coat the stripped crosstube area with MIL

- PRF

- 85582 primer (.0006

– .0009 thick) by spraying in accordance with manufacturer’s instructions. Allow primer to cure per manufacturer instructions.

NOTE The MIL

- PRF

- 85582 primer (PRC

- DeSoto EWDE 072A/B) [packaged as a 1

- gallon, 1

- qt (Parts A&B) kit (P/N EWDE072)] and the MIL

- PRF

- 85285, Type I clear coat paint (Deft 03X085) [packaged as a 3

- qt kit (P/N MIL

- PRF

- 85285)] may be procured from a Bell Helicopter Supply Center. The primer and paint may also be procured [packaged in 1

- qt, primer and paint, kits (P/N 1272K)] from Aerospace Products, Inc., 6413 Midway Road, Halton City, TX 76117 (817

- 332

- 1669).

9. Following primer cure, paint the area with MIL

- PRF

- 85285 polyurethane clear coat pain t by spraying in accordance with manufacturer’s instructions. Allow paint to cure per manufacturer instructions.

10. Utilize the Inspection Record provided in Appendix F to document inspection.

3.3.2 AT 2500 TAKEOFF/LANDING S AND EVERY 12 MONTH S / 2500 TAKEOFF/ LANDINGS, WHICHEVER COMES FIRST, THEREAF TER DIMENSIONAL INSPECTION

1. Perform Hard Landing Crosstube Deflect ion In spection per Section 3.

2. Utilize the Inspection Record provided in Appendix G to document inspection.BHT 205A, 205A

- 1, 205B INSTRUCTIONS for CONTINUED AIRWORTHINESS AA

- 01136 212, 412, 412EP, 412CF, CROSSTUBES Revision K AGUSTA AB412, AB412EP

, UH

- 1B, UH

- 1H, SW204, SW205

AERONAUTICAL ACCESSORIES February 15, 2012 Page 22 of 78 3.3.3 AT 7500 TAKEOFF/LAND INGS AND EVERY SUBSE QUE NT 5000 TAKEOFF/LANDING S THEREAFTER INSPECTIO N AND OVERHAUL (See Figures 2 and 6 .)

NOTE Neither the assignment of a time period overhaul of a component nor failure to assign a time period for overhaul of a component constitutes a warranty of any kind. Th e only warranty applicable to the component is that warranty included in the Purchase Agreement for the component. Time between overhauls and inspection periods is based upon experience, testing, and engineering judgment and is subject to change at the so le discretion of Aeronautical Accessories or an appropriate government agency.

WARNING ALL PARTS REMOVED DUE TO REACHING THEIR LIMITS OR AS A RESULT OF AN ACCIDENT/INCIDENT AND DEEMED UNAIRWORTHY SHALL BE PERMANENTLY MARKED AS SCRAP OR PHYSICALLY DESTROYED TO THE EXTENT THAT THERE IS NO CHANCE OF REPAIR OR INSTALLATION ON ANY HELICOPTER OR COMPONENT.

1. Remove fairings from Aft Crosstube Assembly, if installed.

2. Hoist or jack the helicopter until no weight is on the skid tubes

. 3. Remove forward straps and associa ted hardware from forward fuselage fittings.

4. Remove aft straps and associated hardware from aft fuselage fittings.

5. Raise helicopter until it is clear of skid landing gear, and remove landing
gear.

6. Remove Aft Crosstube Assembly

, Aft Crosstube Beam Assembly

, and both Aft Crosstube Clamp Assemblies in accordance with Section 5

. NOTE The Upper Center Support on the Aft Crosstube is bonded with structural adhesive and is not designed for removal.

WARNING DO NOT SAND CROSSTUBE IN A CIRCUMFERENTIAL DIRECTION.

7. Remove aged sealant from Crosstube by scraping with a sharp piece of plastic. Use of a heat gun to soften the sealant may facilitate removal

. Finish by lightly sanding with 400 grit abrasive cloth or paper in the longitudinal direction of the crosstube.BHT 205A, 205A

- 1, 205B INSTRUCTIONS for CONTINUED AIRWORTHINESS AA

- 01136 212, 412, 412EP, 412CF, CROSSTUBES Revision K AGUSTA AB412, AB412EP

, UH

- 1B, UH

- 1H, SW204, SW205

AERONAUTICAL ACCESSORIES February 15, 2012 Page 23 of 78

8. Prepare crosstube by chemically removing crosstube paint and primer to top of saddles

. CAUTION Protect Upper Center Support area on aft high crosstube to prevent contamination by paint strippers and penetrant inspection chemicals.

a. Apply MIL

- R

- 81294, Type I or II chemical paint remover with a brush and allow it to set from 15 to 45 minutes to soften paint.

b. Using a stiff fiber brush and clean water, rinse paint from crosstube. If required, use abrasive pad (Scotch

- Brite, Type A) and MIL

- R

- 8129 4, Type I or II chemical paint remover to aid in lifting paint. Brush crosstube with abrasive pad in the longitudinal direction, using care so as not to abrade crosstube metal surface

. WARNING DO NOT SAND CROSSTUBE IN A CIRCUMFERENTIAL DIRECTION.

c. Rinse pa rt clean with clean water and dry thoroughly. Reapplication of chemical paint remover may be required to ensure that paint and primer is completely removed so that the (bare) metal surface of the cross tube is clearly visible

9. When crosstube is not to be p rocessed immediately after cleaning, apply corrosion preventive oil, to all parts to protect against corrosion. Wrap parts in barrier material and secure with tape

. 10. I nspect the stripped areas of the Crosstube using fluorescent penetrant method per ASTM E 1417, Type I, Method B, C, or D, Level 2, in accordance with Bell Helicopter Standard Practices Manual (BHT

- ALL

- SPM). Refer to BHT

- ALL

- SPM for fluorescent penetrant inspection procedures.

WARNING IF CRACKING IS DISCOVERED, THE CROSSTUBE IS NO LONGER AIRW ORTHY AND MUST BE IMMEDIATELY REPLACED. REMOVE AND REPLACE CROSSTUBE PER SECTION 5 OF THIS REPORT

. 11. Repair damage within repairable limits in accordance with Section 3.

12. Refinish crosstube by applying MIL

- PRF

- 85582 primer and MIL

- PRF

- 85285 paint (or equiva lent) per manufacturer instructions to the stripped areas. The areas to be inspected per Section 3 should be masked to omit MIL

- PRF

- 85285 paint as shown in Figure 2 . Paint inspection areas with MIL

- PRF

- 85285 Type I Gloss Clear coat per manufacturer instru ctions and Figure 2.BHT 205A, 205A

- 1, 205B INSTRUCTIONS for CONTINUED AIRWORTHINESS AA

- 01136 212, 412, 412EP, 412CF, CROSSTUBES Revision K AGUSTA AB412, AB412EP

, UH

- 1B, UH

- 1H, SW204, SW205

AERONAUTICAL ACCESSORIES February 15, 2012 Page 24 of 78

13. Reinstall Aft Crosstube Clamp Assemblies and Aft Crosstube Beam Assembly in accordance with Section 5

. 14. Reinstall landing gear/Crosstubes to aircraft per Section 5

. 15. Reinstall fairings, as applicable, and r eturn aircraft to service

. 16. Util ize the Inspection Record provided in Appendix H to document inspection.BHT 205A, 205A

- 1, 205B INSTRUCTIONS for CONTINUED AIRWORTHINESS AA

- 01136 212, 412, 412EP, 412CF, CROSSTUBES Revision K AGUSTA AB412, AB412EP

, UH

- 1B, UH

- 1H, SW204, SW205

AERONAUTICAL ACCESSORIES February 15, 2012 Page 25 of 78 3.4 HARD LANDING CROSSTUBE DEFLECT ION IN SPECTION Crosstube hard landing inspection shall be conducted after a known or suspected hard landing. Inspect Crosstubes for deflection as follow s:

1. Hoist or jack the helicopter until no weight is on the skid tubes.

2. Measure the lateral distance between the two forward Crosstube attachment straps. Measure the lateral distance between the two aft Crosstube attachment straps. Divide these dimensions by two to determine the helicopter centerline, BL 0.00.

3. Measure the Crosstube horizontal deflection from the centerline of the helicopter, BL 0.00, to the outside of the skid tubes.

4. The Crosstube horizontal deflection as measured in step 3 above must be within the limits as shown in Figure 4 . Crosstubes that measure outside of the limits must be replaced.BHT 205A, 205A

- 1, 205B INSTRUCTIONS for CONTINUED AIRWORTHINESS AA

- 01136 212, 412, 412EP, 412CF, CROSSTUBES Revision K AGUSTA AB412, AB412EP

, UH

- 1B, UH

- 1H, SW204, SW205

AERONAUTICAL ACCESSORIES February 15, 2012 Page 26 of 78 3.5 REPAIR Repair all damage (scratches, nicks, dents) and corrosion as follows. R efer to Table 1 for damage/repair limits:

TABLE 1

. DAMAGE AND REPAIR LI MITS

Component Maximum Allowable Damage And Repair Limits 

## *

(Damage and corrosion may be repaired as noted in Section 3. 5

Repair, if it does not exceed these limits.)
Scratches/Nicks/Dents And Corrosion Cracks/Holes
Crosstube Refer to Figure 3

, s heets 1 and 2 None

Forward Support To a depth of .020” (.508mm) for a maximum

area of 1.0 square inch (25.4mm 2 ). No more than two repairs per support allowed. None

Aft Support To a depth of .020” (.508mm) for a maximum

area of 1.0 square inch (25.4mm 2 ). No more than two repairs per support allowed. None

Clamp Assembly To a depth of .005” (.127mm) None

Notes The following apply to Crosstube damage and repair:

a. All Crosstube damage is unacceptable and shall be repaired.
b. Damage limits apply to the surface areas of the Crosstube as indicated by Figure 3 . Circumferential grooves or grind marks are not acceptable.

c. All corrosion shall be cleaned up to twice the vi sible corrosion depth and shall not exceed the damage limits allowed (refer to Figure 3 ).
d. The orientation of scratches and corrosion damage is limited by the dimensions in Figure 3

. e. The minimal longitudinal distance between repairs is 3.0 inches.

CAUTION Abrasive blending

- out strokes must be parallel to the Crosstube, not circumferential.

1. Polish the affected area in a longitudinal direction using Scotch

- Brite or No. 400 to 600 abrasive paper or cloth. Ensure the limits presented in Table 1 and Fig ure 3 are not exceeded.

2. Clean repaired area with isopropyl alcohol, brush Alodine bare aluminum areas per MIL

- DTL

- 81706 or equivalent, and reprime with Epoxy Polyamide primer per MIL

- PRF

- 23377 or equivalent.

3. Paint repaired area to match existing finish.BHT 205A, 205A

- 1, 205B INSTRUCTIONS for CONTINUED AIRWORTHINESS AA

- 01136 212, 412, 412EP, 412CF, CROSSTUBES Revision K AGUSTA AB412, AB412EP

, UH

- 1B, UH

- 1H, SW204, SW205

AERONAUTICAL ACCESSORIES February 15, 2012 Page 27 of 78 3.6 C LEANING REQUIREMENTS
Any dirt, sand, or debris should be cleaned from the Replacement Crosstubes using a mild, nonabrasive soap. Wipe surfaces dry with a nonabrasive cloth or paper before cleaning agent evaporates.

3.7 ADJUSTMENTS
Adjustment of the Replacemen t Crosstubes is not required. Apply the following torque to all noted fasteners during component or fastener replacement (torque all fasteners in accordance with Table 2):

1. Torque the fasteners attaching the T

- Bolt and Clamps (10 Fastener Size).

2. Torque the fasteners attaching the U

- Bolt and Supports (1/4 Fastener Size).

3. Torque the fasteners attaching the Saddles to the Crosstubes (1/4 or 3/8 Fastener Size).

TABLE 2

. TORQUE VALUES

Fastener Size Torque (In

- lbs) Torque (Nm)

10 30

– 40 3.4

– 4.5
1/4 80

– 100 9.0

– 11.3 1/4 (AN4

- XXX) 30

– 40 3.4

– 4.5 1/4 (NAS6604

- XX) 50

– 70 5.6

– 7.9 3/8 (AN6

- XXX) 95

– 100 10.7

– 11.3 3/8 (NAS6606

- XX) 160

– 190 18.1

– 21.5BHT 205A, 205A

- 1, 205B INSTRUCTIONS for CONTINUED AIRWORTHINESS AA

- 01136 212, 412, 412EP, 412CF, CROSSTUBES Revision K AGUSTA AB412, AB412EP

, UH

- 1B, UH

- 1H, SW204, SW205

AERONAUTICAL ACCESSORIES February 15, 2012 Page 28 of 78 4.0 TROUBLESHOOTING INFORMATION

TABLE 3

. TROUBLESHOOTING

Problem Probable Cause Remedy Landing Gear

- Replacement Crosstube is loose or has excessive vibration. Attachment components or

fasteners loose, damaged, or missing. Check security of crosstube attachment components. Check torque on all fasteners according to Table 2. Replacement Crosstube is damaged allowing
movement. Check Crosstube for cracks or other damage in accordance with Table 1. Repair / replace as needed.

Aircraft does not sit level Forward or Aft Crosstube is

spread. Perform Crosstube Hard Landing Inspection per Section 3. 4 . Replace Components as required.BHT 205A, 205A

- 1, 205B INSTRUCTIONS for CONTINUED AIRWORTHINESS AA

- 01136 212, 412, 412EP, 412CF, CROSSTUBES Revision K AGUSTA AB412, AB412EP

, UH

- 1B, UH

- 1H, SW204, SW205

AERONAUTICAL ACCESSORIES February 15, 2012 Page 29 of 78 5.0 REMOVAL AND REPLACEMENT INFORMATION

5.1 REMOVAL

– CROSSTUBES

1. Remove fairings, if installed , per manufacturer instructions

. 2. Hoist or jack the helicopter until no weight is on the skid tubes.

3. Remove forward straps and associated hardware from forward fuselage fittings.

4. Remove aft straps and associated hardware from aft fuselage fittings.

5. Raise helicopter until it is clear of skid landing gear, and remove landing
gear.

6. Remove the skid tubes and the ass ociated hardware from the Crosstubes.

7. If necessary, remove the Beam Assembly (refer to Section 5 .5) and attaching hardware from 412 Aft Crosstubes.

5.2 INSTALLATION

– CROSSTUBES

NOTE If skid tube s were removed from Crosstubes, complete steps 1 thru 6. If skid tube s were not removed from Crosstubes, proceed to step 7.

1. Reinstall Crosstubes into skid tube saddles with existing hardware. Apply sealant (AMS

- S

- 8802) under each screw head. Do not torque fasteners at this time.

2. Reinstall the Beam Assembly (refer to Section 5 .6) on 412 Aft Crosstubes if previously removed.

3. Install the landing gear on aircraft while keeping the skids off the ground.

4. Torque all screws attaching the Crosstubes to the saddles per Table 2.

5. Lower the helicopter to the ground.

6. Apply a fil let of sealant (AMS

- S

- 8802) around top edge of the saddle.

7. Attach the skid gear to the helicopter with the existing cap assemblies and the attaching hardware. Torque all bolts 100

– 140 in

- lbs (11.3

– 15.8 Nm).BHT 205A, 205A

- 1, 205B INSTRUCTIONS for CONTINUED AIRWORTHINESS AA

- 01136 212, 412, 412EP, 412CF, CROSSTUBES Revision K AGUSTA AB412, AB412EP

, UH

- 1B, UH

- 1H, SW204, SW205

AERONAUTICAL ACCESSORIES February 15, 2012 Page 30 of 78 5.3 REMOVAL

– CROSSTUBE SUPPORTS

NOTE The 604

- 026

- 001 Upper Aft Support on the model 412 Aft Crosstubes is bonded with structural adhesive and is not designed for removal. Contact Aeronautical Accessories Bell Helicopter Piney Flats Technical Support for assistance if replacement is required

. 1. Remove the Support U

- bolts from the Crosstube Assembly.

2. Remove the Supports from the Crosstube Assembly. Use of a heat gun to soften the sealant may facilitate removal.

3. Using a plastic scraper, remove the old sealant from Crosstube and Supports. Clean with a cl ean cloth and alcohol.

NOTE Inspect the inner surface coating material for deterioration (pealing, cracking, or wear). 604

- 025

- 001 / 604

- 025

- 003 / 604

- 025

- 011 / 604

- 025

- 013 and 604

- 026

- 003 Supports have black Nylon coating and 205

- 050

- 132

- 001 / 205

- 050

- 13 2

- 003 and 205

- 050

- 133

- 001 / 205

- 050

- 133

- 003 / 412

- 050

- 007

- 101 Supports have EC2216 adhesive coating. Replace Supports if Nylon coating has separated or has worn through. For EC2216 coated Supports, two coats of EC2216 adhesive may be applied for restorat ion of the protective barrier. Allow 24 hours for the adhesive to cure.

5.4 INSTALLATION

– CROSSTUBE SUPPORTS

NOTE The 604

- 026

- 001 Upper Aft Support on the model 412 Aft Crosstubes is not designed for field re placement

. Contact Aeronautical Accessories Bell Helicopter Piney Flats Technical Support for assistance if replacement is required

. NOTE Do not reinstall any Aeronautical Accessories Support if uncoated. Aeronautical Accessories coated Supports must be used for reinstallation. Replace coated Supports if damaged or worn. (This note is not applicable to alternate BHT uncoated Supports.)

1. Scuff the faying surface of the Crosstube and the Supports with 180 grit abrasive paper. Do n o remove paint from the Crosstube or Nylon/EC2216 coating from the Supports.BHT 205A, 205A

- 1, 205B INSTRUCTIONS for CONTINUED AIRWORTHINESS AA

- 01136 212, 412, 412EP, 412CF, CROSSTUBES Revision K AGUSTA AB412, AB412EP

, UH

- 1B, UH

- 1H, SW204, SW205

AERONAUTICAL ACCESSORIES February 15, 2012 Page 31 of 78

2. Clean the sanding residue from the Crosstube and Supports using alcohol and a clean cloth.

3. Apply one layer (approx. 1/16 inch thick) of sealant (AMS

- S

- 8802) to inside surface of t he Supports prior to assembly.

4. Reassemble the Upper and Lower Supports and the U

- Bolts on the Crosstube, Refer to Figure s 7 thru 10

. 5. Remove excess sealant or adhesive and wipe clean after assembly.

6. Torque the U

- bolt nuts to 80

– 100 in

- lbs (9.0 to 11.3 N m) within 30 minutes after application of sealant or adhesive.

a. Verify torque after cure is complete (72 hours at room temperature). Re

- torque as required

. b. Apply fillet of 099

- 050

- 222 Sealant to edge s of the S u pport and Crosstube. ( Sealant to have no voids.)

CAUTION Flight/landing operations prior to full cure (72 hours at room temperature) could result in Crosstube Support
movement.

5.5 REMOVAL

– BEAM ASSEMBLY

1. Remove the Cotter Pin, the Nut, the Washers, and the Bolt from the Beam Assembly and the Aft Center Support.

2. Remove the Beam Assembly.

5.6 INSTALLATION

– BEAM ASSEMBLY

1. Use the Bolt, the Washers, and the Nut and install the Beam Assembly on the Aft Center Support.

2. Safety the Nut with a new Cotter Pin.

5.7 REMOV AL

– CLAMP ASSEMBLY

1. Remove the Nuts from the Clamp Assembly.

2. Remove the Clamp Assembly from the Crosstube Assembly. Use of a heat gun to soften the sealant may facilitate removal.

3. Using a plastic scraper, remove the old sealant from Crosstube and Clamp As sembly. Clean with a clean cloth and alcohol.

NOTE Inspect the Nylon coating on the faying surface of the Clamp for condition. Replace if coating has separated or has worn through.BHT 205A, 205A

- 1, 205B INSTRUCTIONS for CONTINUED AIRWORTHINESS AA

- 01136 212, 412, 412EP, 412CF, CROSSTUBES Revision K AGUSTA AB412, AB412EP

, UH

- 1B, UH

- 1H, SW204, SW205

AERONAUTICAL ACCESSORIES February 15, 2012 Page 32 of 78 5.8 INSTALLATION

– CLAMP ASSEMBLY

NOTE Do not reinstall any Clamp if uncoated . Coated Clamps must be used for reinstallation. Replace if damaged or worn.

1. Scuff the faying surface of the Crosstube and the Clamps with 180 grit abrasive paper. Do no remove paint from the Crosstube or Nylon Coating from the Clamps.

2. Clean the sandi ng residue from the Crosstube and Clamps using alcohol and a clean cloth.

3. Apply a layer (approx. 1/16 inch thick) of sealant (AMS

- S

- 8802) to inside surface of the Clamp prior to assembly.

4. Reassemble the Clamp Assembly on the Crosstube (refer to Figure s 9 a nd 10 ).

5. Remove excess sealant and wipe clean after assembly.

NOTE Use of a wire/string may be required to keep the Clamp Assemblies from sliding down the Crosstube when torque is being applied.

6. Torque the Nuts to 30

– 40 in

- lbs (3.4

– 4.5 Nm) within 30 minutes after application of sealant. C heck torque after 15 minutes. Re

- torque as required

.

a. Apply fillet of 099

- 050

- 222 Sealant to edges of the C lamp

. (Sealant to have no voids.)

5.9 REMOVAL

– PLATE ASSEMBLY

1. Remove the Crosstubes from the helicopter per Section 5 .1.

2. Using #30 drill bit (.127

– .133 ) , d rill out the rivets securing the Plate Assembly to the Crosstube.

3. Remove the Plate Assembly.

5.10 INSTALLATIO N

– PLATE ASSEMBLY

1. Slide the Plate Assembly into the Crosstube until the Saddle bolt holes align with the Plate Assembly bolt holes.

2. Temporarily secure the Plate Assembly in place with crosstube/saddle bolts of the appropriate diameter using washers as spa cers if required.

3. Match drill Crosstube rivet holes to the Plate Assembly using a #30 drill bit (.127

– .133 )

. 4. Remove crosstube/saddle bolts and slide Plate Assembly out from Crosstube. Deburr and apply one coat of Epoxy Polyamide Primer per MIL

- PRF

- 23377 or equivalent to Plate Assembly rivet holes.BHT 205A, 205A

- 1, 205B INSTRUCTIONS for CONTINUED AIRWORTHINESS AA

- 01136 212, 412, 412EP, 412CF, CROSSTUBES Revision K AGUSTA AB412, AB412EP

, UH

- 1B, UH

- 1H, SW204, SW205

AERONAUTICAL ACCESSORIES February 15, 2012 Page 33 of 78

5. Slide the Plate Assembly into the Crosstube until the Saddle bolt and rivet holes align with the Plate Assembly bolt and rivet holes.

6. Wet Install rivets with Sealant per AMS

- S

- 8802.

6.0 STRUCTURAL FASTENER DATA For hardware identification and torque refer to Tables 2 and 4 thru 12 , and Figures 1 thru 11

.

7.0 SPECIAL TOOLS NEEDED
Torque Wrench

8.0 TOWING AIRCRAFT
Helicopter towing operations must be conducted in accordance with applicable model Bell Helicopter Maintenance Manual. Manufacturer towing requirements are applicable to any aircraft being towed with weight on gear. This includes towing aircraft with ground handling wheels installed and aircraft resting on moveable platforms.

CAUTION Failure to follow manufactur er towing instructions may result in crosstube damage and/or failure.

9.0 WEIGHT AND BALANCE

9.1 LOW SKID GEAR CROSST UBE

Part Number Weight (lbs) Weight

(kg) FS (in) FS (mm) BL

(in) BL (mm) 212

- 320

- 103

– Forward 25.19 11.43 71.65 1820 0.00 0.00 212

- 320

- 104

– Aft 36.31 16.47 163.00 4140 0.00 0.00 412

- 320

- 104

– Aft 42.51 19.28 163.00 4140 0.00 0.00 412

- 320

- 154

– Aft (Including Beam Assembly) 53.52 24.28 163.00 4140 0.00 0.00

9.2 HIGH SKID GEAR CROSS TUBE

Part Number Weight (lbs) Weight

(kg) FS (in) FS (mm) BL

(in) BL (mm) 212

- 321

- 103

– Forwar d 32.08 14.55 71.65 1820 0.00 0.00 212

- 321

- 104 / 212

- 321

- 304

– Aft 44.67 20.26 163.00 4140 0.00 0.00 412

- 321

- 104 / 412

- 321

- 304

– Aft 49.33 22.38 163.00 4140 0.00 0.00 412

- 321

- 106 / 412

- 321

- 306

– Aft (Including Beam Assembly) 60.34 27.37 163.00 4140 0.00 0.00BHT 205A, 205A

- 1, 205B INSTRUCTIONS for CONTINUED AIRWORTHINESS AA

- 01136 212, 412, 412EP, 412CF, CROSSTUBES Revision K AGUSTA AB412, AB412EP

, UH

- 1B, UH

- 1H, SW204, SW205

AERONAUTICAL ACCESSORIES February 15, 2012 Page 34 of 78 10.0 AIRWORTHINESS LIMITA TIONS

10.1 RETIREMENT LIFE

A retirement life has been established for High Aft Crosstubes P/Ns 412

- 321

- 304 and 412

- 321

- 104 (Serial number 1274 and subsequent) and 212

- 321

- 304 (Serial number 1250 and subsequent) . A n Historical Record is provided ( Appendix I ) for recording of takeoff/landing operations for the listed life

- limited Crosstubes.

PART NUMBER (1) COMPONENT LIFE LIMIT ( RIN) (2)

212

- 321

- 304 (3) Aft Crosstube, High Skid Gear 24,000 Takeoff/Landings

412

- 321

- 104 (4) Aft Crosstube, High Skid Gear 20,000 Takeoff/Landings

412

- 321

- 304 (4) Aft Crosstube, High Skid Gear 20,000 Takeoff/Landings

NOTES:
(1) The airworthiness limitation for part number listed applies to all successive dash numbers for that component unless otherwise specified.
(2) RIN (Retirement Index Number) is the retirement life based on fatigue damage from normal helicopter lifts and takeoffs. New components will begin with an accumulated RIN of zero that will be incre ased as takeoffs and landings are performed. Operators must record the number of takeoffs/landings and increase the accumulated RIN by 1 for each takeoff/landing. When the maximum RIN is reached, the component will be removed from service.
(3) Applicable to BHT model 205 and 212 helicopters.
(4) Applicable to BHT model 412 helicopters.

The Airworthiness Limitations Sect ion J s FAA approved and specifies maintenance required under §§ 43.16 and 91.403 of the Federal Aviation Regulations unless an alternati ve program has been FAA approved.

AIRWORTHINESS LIMITATIONS REVISION HISTORY FAA APPROVAL DATE Report revision NR thru D N/A

– Report revision E Lance T. Gant 04/14/10 Report revision F: No Change N/A

– Report revision G: No Change N/A

– Report revision H: No Change N/A

– Report revision I: No Change N/A

– Report revision J: No Change N/A

– Report revision K : No Change N/A

–BHT 205A, 205A

- 1, 205B INSTRUCTIONS for CONTINUED AIRWORTHINESS AA

- 01136 212, 412, 412EP, 412CF, CROSSTUBES Revision K AGUSTA AB412, AB412EP

, UH

- 1B, UH

- 1H, SW204, SW205

AERONAUTICAL ACCESSORIES February 15, 2012 Page 35 of 78 11.0 PARTS BREAKDOWN

Tables 4 thru 16 contain Parts Breakdown data for Aeronautical Accessories Replacement Crosstubes for model 205A, 205A

- 1, 205B, 212, 412, 412EP, 412CF, AB412, AB412EP, UH

- 1B, UH

- 1H, SW204, and SW205 helicopters. The column Availability Code (AV Code) specifies the procurement status for each part. The codes to ident ify if a part is procurable, procedure details to get an assembly or local manufacture code are as follows:

AV Code Details

0 Nonprocurable part 1 Procurable part 2 Procure as detail parts only 3 Procurable as Next Higher Assembly 4 Local manufacture. Contact Product Support Engineering (PSE)
5 Part replacement requires a fixture or special equipment. Contact PSE 6 Non

- stock procurable partBHT 205A, 205A

- 1, 205B INSTRUCTIONS for CONTINUED AIRWORTHINESS AA

- 01136 212, 412, 412EP, 412CF, CROSSTUBES Revision K AGUSTA AB412, AB412EP

, UH

- 1B, UH

- 1H, SW204, SW205

AERONAUTICAL ACCESSORIES February 15, 2012 Page 36 of 78 11.1 LOW SKID GEAR PARTS BREAKDOWN

11.1.1 212

- 320 SERIES LOW GEAR CROSSTUBES

TABLE 4

. PARTS BREAKDOWN, LOW SKID GEAR CROSSTUBES
, 212

- 320

- 103 FORWARD / 212

- 320

- 104 AFT (1) CROSSTUBE ASSEMBL Y

Qty

- 103 Qty

- 104 Part Number Description AV Code
1 212

- 320

- 203 Hardware Kit 1
1 212

- 320

- 207 Hardware Kit 1
1 1 099

- 091

- 001 Decal (Alt: 099

- 091

- 011) 1
1 60 5

- 0 1 3

- 1 01 Forward Crosstube Assembly 3
1 60 5

- 0 1 5

- 1 01 Aft Crosstube Assembly 3
Notes:
1. 212

- 320

- 104 Assembly not for use on 412 models

TABLE 5. PARTS BREAKDOWN, 212

- 320

- 2 03 / 212

- 320

- 2 0 7 HARDWARE KIT

Qty

- 203 Qty

- 207 Part Number Description AV Code
4 NAS1149D0416J Washer 1
8 12 NAS1149 D0616J Washer 1
4 NAS6604

- 11 Bolt 1
8 12 NAS6606

- 9 Bolt 1
12 NAS6606

- 11 Bolt 1BHT 205A, 205A

- 1, 205B INSTRUCTIONS for CONTINUED AIRWORTHINESS AA

- 01136 212, 412, 412EP, 412CF, CROSSTUBES Revision K AGUSTA AB412, AB412EP

, UH

- 1B, UH

- 1H, SW204, SW205

AERONAUTICAL ACCESSORIES February 15, 2012 Page 37 of 78

TABLE 6. PARTS BREAKDOWN, CROSSTUBE ASSEMBLIES
605

- 01 3

- 10 1 FORWARD // 605

- 015

- 10 1 (1) AFT

Qty

- 013

- 101 Qty

- 01 5

- 101 Part Number Description AV Code
1 604

- 003

- 001 Forward Crosstube 3
1 604

- 005

- 001 Aft Crosstube 3
4 604

- 023

- 101 Plate Assembly 1
4 4 604

- 023

- 103 Plate Assembly 1
4 604

- 023

- 105 Plate Assembly 1

2 604

- 025

- 001 ( 2 ) Upper Forward Support ( Alt: 205

- 050

- 132

- 001 (3) ) 1

2 604

- 025

- 003 ( 2 ) Lower Forward Support ( Alt: 205

- 050

- 133

- 001 (3) ) 1
4 604

- 025

- 005 U

- Bolt 1

2 604

- 025

- 011 ( 2 ) Upper Aft Support ( Alt: 205

- 050

- 132

- 003 (3) ) 1

2 604

- 025

- 013 ( 2 ) Lower Aft Support ( Alt: 205

- 050

- 133

- 003 (3) ) 1
4 604

- 025

- 015 U

- Bolt 1
1 1 099

- 050

- 222 Sealant (Alt: 099

- 050

- 223) 1
1 4067 Plug 1
20 CR3212

- 4

- 8 Rivet 1
20 CR3212

- 5

- 8 Rivet 1
8 8 MS21043

- 4 Nut 1
8 8 NAS1149C0463R Washer (Alt: AN960C416 ) 1
Notes:
1. Assembly not for use on 412 models
2. Aeronautical Accessories Coated Support
3. BHT Uncoated SupportBHT 205A, 205A

- 1, 205B INSTRUCTIONS for CONTINUED AIRWORTHINESS AA

- 01136 212, 412, 412EP, 412CF, CROSSTUBES Revision K AGUSTA AB412, AB412EP

, UH

- 1B, UH

- 1H, SW204, SW205

AERONAUTICAL ACCESSORIES February 15, 2012 Page 38 of 78 11.1.2 412

- 320 SERIES LOW GEAR CROSSTUBES

TABLE 7. PARTS BREAKDOWN, LOW SKID GEAR AFT CROSSTUBES
412

- 320

- 104 (1) / 4 12

- 320

- 154 (1) AFT CROSSTUBE ASSEMB L IES

Qty

- 104 Qty

- 154 Part Number Description AV Code
1 412

- 320

- 203 Hardware Kit 1
1 099

- 091

- 001 Decal (Alt: 099

- 091

- 011) 1
1 60 5

- 015

- 201 Aft Crosstube Assembly 3
1 412

- 320

- 104 Aft Crosstube Assembly 1
1 604

- 030

- 001 Beam Assembly (Alt: 412

- 050

- 003

- 109 /

- 111 /

- 113) 1

1 412

- 050

- 008

- 101 (2) Bolt (Alt: 604

- 028

- 001) 1

1 MS14145L8 (2) Nut 1

1 MS24665

- 287 (2) Cotter Pin 1

1 NAS1149D1063K (2) Washer 1
Notes:
1. Assembly for use on BHT 412, 412EP , 412CF, Agusta AB412, AB412EP models only
2. Used to attach Beam Assembly to Crosstube

TABLE 8. PARTS BREAKDOWN, 412

- 320

- 2 03 HARDWARE KIT

Qty Part Number Description AV Code
12 NAS1149 D0616J Washer 1
12 NAS6606

- 11 Bolt 1BHT 205A, 205A

- 1, 205B INSTRUCTIONS for CONTINUED AIRWORTHINESS AA

- 01136 212, 412, 412EP, 412CF, CROSSTUBES Revision K AGUSTA AB412, AB412EP

, UH

- 1B, UH

- 1H, SW204, SW205

AERONAUTICAL ACCESSORIES February 15, 2012 Page 39 of 78

TABLE 9. PARTS BREAKDOWN, 605

- 015

- 201 AFT CROSSTUBE ASSEMBLY

Qty Part Number Description AV Code
1 604

- 005

- 003 Aft Crosstube 3
4 604

- 023

- 103 Plate Assembly 1
4 604

- 023

- 105 Plate Assembly 1
1 604

- 02 6

- 001 Upper Aft Support ( Alt: 412

- 050

- 006

- 101A ) 1
1 604

- 02 6

- 0 0 3 Lower Aft Support ( Alt: 412

- 050

- 00 7

- 101 ) 1
2 604

- 026

- 0 1 5 Aft U

- Bolt ( Alt: 214

- 05 2

- 00 8

- 101 ) 1
2 604

- 027

- 001 Clamp Assembly ( Alt: 604

- 027

- 002 ) 1
2 604

- 027

- 103 Abrasion Strip 1
1 099

- 050

- 121 Adhesive 1
1 099

- 050

- 222 Sealant (Alt: 099

- 050

- 223) 1
20 CR3212

- 5

- 9 Rivet 1
1 EC 9324B Adhesive Primer 1
1 LARSON L100 Adhesive 1
8 MS21043

- 4 Nut 1
8 NAS1149C0463R Washer (Alt: AN960C416) 1BHT 205A, 205A

- 1, 205B INSTRUCTIONS for CONTINUED AIRWORTHINESS AA

- 01136 212, 412, 412EP, 412CF, CROSSTUBES Revision K AGUSTA AB412, AB412EP

, UH

- 1B, UH

- 1H, SW204, SW205

AERONAUTICAL ACCESSORIES February 15, 2012 Page 40 of 78 11.2 HIGH SKID GEAR PARTS BREAKDOWN

11.2.1 2 12

- 321 SERIES HIGH GEAR CROSSTUBES

TABLE 10. PARTS BREAKDOWN, HIGH SKID GEAR CROSSTUBES
,

212

- 321

- 103 FORWARD CROSSTUB E ASSEMBL Y
212

- 321

- 104 (1) / 212

- 321

- 304 (1) AFT CROSSTUBE ASSEMB L Y

Qty

- 103 Qty

- 104 Qty

- 304 Part Number Description AV Code
1 212

- 321

- 203 Hardware Kit 1
1 1 212

- 321

- 207 Hardware Kit 1
1 1 1 099

- 091

- 001 Decal 1
1 60 5

- 003

- 101 Forward Crosstube Assembly 3
1 1 60 5

- 005

- 101 Aft Crosstube Assembly 3
Notes:
1. Assembly not for use on 412 models

TABLE 11. PARTS BREAKDOWN, 212

- 32 1

- 2 03 / 212

- 32 1

- 2 0 7 HARDWARE KIT

Qty

- 203 Qty

- 207 Part Number Description AV Code
12 NAS660 6

- 11 Bolt 1
8 12 NAS6606

- 9 Bolt 1
12 12 NAS1149 D0616J Washer 1BHT 205A, 205A

- 1, 205B INSTRUCTIONS for CONTINUED AIRWORTHINESS AA

- 01136 212, 412, 412EP, 412CF, CROSSTUBES Revision K AGUSTA AB412, AB412EP

, UH

- 1B, UH

- 1H, SW204, SW205

AERONAUTICAL ACCESSORIES February 15, 2012 Page 41 of 78

TABLE 12. PARTS BREAKDOWN, CROSSTUBE ASSEMBLIES
605

- 00 3

- 10 1 FORWARD // 605

- 005

- 10 1 (1) AFT CROSSTUBE ASSEMBL Y

Qty

- 0 0 3

- 101 Qty

- 0 05

- 101 Part Number Description AV Code
2 605

- 005

- 121 Decal 1
1 604

- 003

- 011 Forward Crosstube 3
1 604

- 005

- 011 Aft Crosstube 3
4 4 604

- 023

- 103 Plate Assembly 1
4 4 604

- 023

- 105 Plate Assembly 1

2 604

- 025

- 001 ( 2 ) Upper Forward Support ( Alt: 205

- 050

- 132

- 001 (3) ) 1

2 604

- 025

- 003 ( 2 ) Lower Forward Support ( Alt: 205

- 050

- 133

- 001 (3) ) 1
4 604

- 025

- 005 U

- Bolt 1

2 604

- 025

- 011 ( 2 ) Upper Aft Support ( Alt: 205

- 050

- 132

- 003 (3) ) 1

2 604

- 025

- 013 ( 2 ) Lower Aft Support ( Alt: 205

- 050

- 133

- 003 (3) ) 1
4 604

- 025

- 015 U

- Bolt 1
1 1 099

- 050

- 222 Sealant (Alt: 099

- 050

- 223) 1
1 4067 Plug 1
20 CR3212

- 4

- 9 Rivet 1
20 CR3212

- 5

- 9 Rivet 1
8 8 NAS1149C0463R Washer 1
8 8 MS21043

- 4 Nut 1
Notes:
1. Assembly not for use on 412 models
2. Aeronautical Accessories Coated Support
3. BHT Uncoated SupportBHT 205A, 205A

- 1, 205B INSTRUCTIONS for CONTINUED AIRWORTHINESS AA

- 01136 212, 412, 412EP, 412CF, CROSSTUBES Revision K AGUSTA AB412, AB412EP

, UH

- 1B, UH

- 1H, SW204, SW205

AERONAUTICAL ACCESSORIES February 15, 2012 Page 42 of 7 8 11.2.2 4 12

- 321 SERIES HIGH GEAR CROSSTUBES

TABLE 13. PARTS BREAKDOWN, HIGH SKID GEAR AFT CROSSTUBES
, 412

- 321

- 106 (1) / 412

- 321

- 306 (1) AFT CROSSTUBE ASSEMBL Y

Qty

- 106 Qty

- 306 Part Number Description AV Code
1 412

- 321

- 104 Aft Crosstube Assembly 1
1 412

- 321

- 304 Aft Crosstube Assembly 1

1 1 604

- 028

- 001 (2) Bolt (Alt: 412

- 050

- 008

- 101) 1

1 1 604

- 030

- 001 Beam Assembly (Alt: 412

- 050

- 003

- 109 /

- 111 /

- 113) 1

1 1 MS14145L8 (2) Nut 1

1 1 MS24665

- 287 (2) Cotter Pin 1

1 1 NAS1149D1063K (2) Washer 1

Notes:
1. Assembly for use on BHT 412, 412EP , 412CF, Agusta AB412, AB412EP models only
2. Used to attach Beam Assembly to Crosstube

TABLE 14. PARTS BREAKDOWN, HIGH SKID GEAR AFT CROSSTUBES
, 412

- 321

- 104 (1) / 412

- 321

- 304 (1) AFT CROSSTUBE ASSEMBL Y

Qty

- 104 Qty

- 304 Part Number Description AV Code
1 1 412

- 321

- 200 Hardware Kit 1
1 1 099

- 091

- 001 Decal (Alt: 099

- 091

- 011) 1
1 1 60 5

- 005

- 201 Aft Crosstube Assembly 3
Notes:
1. Assembly for use on BHT 412, 412EP, 412CF, Agusta AB412, AB412EP models onlyBHT 205A, 205A

- 1, 205B INSTRUCTIONS for CONTINUED AIRWORTHINESS AA

- 01136 212, 412, 412EP, 412CF, CROSSTUBES Revision K AGUSTA AB412, AB412EP

, UH

- 1B, UH

- 1H, SW204, SW205

AERONAUTICAL ACCESSORIES February 15, 2012 Page 43 of 78

TABLE 15. PARTS BREAKDOWN, 4 12

- 32 1

- 2 0 0 HARDWARE KIT

Qty Part Number Description AV Code
12 NAS1149 D0616J Washer 1
12 NAS6606

- 11 Bolt 1

TABLE 16. PARTS BREAKDOWN, 605

- 005

- 201 AFT CROSSTUBE ASSEMBLY

Qty Part Number Description AV Code
2 605

- 005

- 121 Decal 1
1 604

- 00 5

- 013 Aft Crosstube 3
4 604

- 023

- 103 Plate Assembly 1
4 604

- 023

- 105 Plate Assembly 1
1 604

- 02 6

- 0 0 1 Upper Aft Support ( Alt: 412

- 050

- 006

- 101A ) 1
1 604

- 02 6

- 003 Lower Aft Support ( Alt: 412

- 050

- 007

- 101 ) 1
2 604

- 026

- 015 Aft U

- Bolt ( Alt: 214

- 05 2

- 008

- 101 ) 1
2 604

- 027

- 002 Clamp Assembly 1
2 604

- 027

- 103 Abrasion Strip 1
1 099

- 050

- 222 Sealant (Alt: 099

- 050

- 223) 1
20 CR3212

- 5

- 9 Rivet 1
1 EC 3924B Adhesive Primer 1
1 Larson L100 Adhesive 1
4 MS21043

- 4 Nut 1
4 NAS1149C0463R Washer (Alt: AN960C416 ) 1BHT 205A, 205A

- 1, 205B INSTRUCTIONS for CONTINUED AIRWORTHINESS AA

- 01136 212, 412, 412EP, 412CF, CROSSTUBES Revision K AGUSTA AB412, AB412EP

, UH

- 1B, UH

- 1H, SW204, SW205

AERONAUTICAL ACCESSORIES February 15, 2012 Page 44 of 78 12.0 REFERENCE CROSSTUBE FIGURES

NOTE Reference Crosstube figure s are NOT TO SCALE

.

FIGURE 1

. CLEAR COAT AND INSPE CTION AREA
, 212

- 321

- 103 HIGH FORWARD CRO SSTUBE ( S /N AA

- 1250 AND SUBSEQUENT )BHT 205A, 205A

- 1, 205B INSTRUCTIONS for CONTINUED AIRWORTHINESS AA

- 01136 212, 412, 412EP, 412CF, CROSSTUBES Revision K AGUSTA AB412, AB412EP

, UH

- 1B, UH

- 1H, SW204, SW205

AERONAUTICAL ACCESSORIES February 15, 2012 Page 45 of 78 FIGURE 2

. CLEAR COAT AND INSPE CTION AREA
, 412

- 321

- 104 AND 412

- 321

- 304 HIGH AFT CROSSTU BE (S/N AA

- 1274 AND SUBSEQUENT)BHT 205A, 205A

- 1, 205B INSTRUCTIONS for CONTINUED AIRWORTHINESS AA

- 01136 212, 412, 412EP, 412CF, CROSSTUBES Revision K AGUSTA AB412, AB412EP

, UH

- 1B, UH

- 1H, SW204, SW205

AERONAUTICAL ACCESSORIES February 15, 2012 Page 46 of 78 FIGURE 3 (SHEET 1 OF 2)

. CROSSTUBE DAMAGE LIM ITS AND REPAIR ZONESBHT 205A, 205A

- 1, 205B INSTRUCTIONS for CONTINUED AIRWORTHINESS AA

- 01136 212, 412, 412EP, 412CF, CROSSTUBES Revision K AGUSTA AB412, AB412EP

, UH

- 1B, UH

- 1H, SW204, SW205

AERONAUTICAL ACCESSORIES February 15, 2012 Page 47 of 78 Model 205 / 212 Crosstube Damage Limits

Zone Forward Crosstube Aft Crosstube

in. mm in. mm
A1 .005 .127 .005 .127

A2 .015 .381 .015 .381

A3 .005 .127 .005 .127

A4 .015 .381 .015 .381

B1 .015 .381 .015 .381

B2 .015 .381 .015 .381

B3 .015 .381 .015 .381

B4 .015 .381 .015 .381

C1 .010 .254 .012 .305
C2 .010 .254 .012 .305
C3 .010 .254 .012 .305
C4 .010 .254 .012 .305

D .030 .762 .038 .965

Model 412 Crosstube Damage Limits

Zone Forward Crosstube Aft Crosstube

in. mm in. mm
A1 .005 .127 .005 .127

A2 .015 .381 .015 .381

A3 .005 .127 .005 .127

A4 .015 .381 .015 .381

B1 .005 .127 .005 .127

B2 .015 .381 .015 .381

B3 .005 .127 .005 .127

B4 .015 .381 .015 .381

C1 .010 .254 .012 .305
C2 .010 .254 .012 .305
C3 .005 .127 .005 .127
C4 .010 .254 .012 .305

D .030 .762 .038 .965

FIGURE 3 (SHEET 2 OF 2)

. CROSSTUBE DAMAGE LIM ITS AND REPAIR ZONESBHT 205A, 205A

- 1, 205B INSTRUCTIONS for CONTINUED AIRWORTHINESS AA

- 01136 212, 412, 412EP, 412CF, CROSSTUBES Revision K AGUSTA AB412, AB412EP

, UH

- 1B, UH

- 1H, SW204, SW205

AERONAUTICAL ACCESSORIES February 15, 2012 Page 48 of 78 Crosstube, Low Skid Gear Part Number Model Effectivity “A” “B”
in. mm in. mm 212

- 320

- 103 ( Forward ) 205 / 212 / 412 52.00 1321 54.00 1372
212

- 320

- 104 ( Aft ) 205 / 212 52.00 1321 54.00 1372
412

- 320

- 154 / 412

- 320

- 104 (Low) 412 52.00 1321 54.00 1372

Crosstube, High Skid Gear Part Number Model Effectivity “A” “B”
in. mm in. mm 212

- 321

- 103 ( Forward ) 205A / 205A

- 1 / 205B / 212 / 412 / 412EP / 412CF / AB412 / AB412EP / UH

- 1B / UH

- 1H / SW204 / SW205 57.00 1448 59.00 1499

212

- 321

- 104 / 212

- 321

- 304 ( Aft ) 205 / 212 57.00 1448 59.00 1499
412

- 321

- 104 / 412

- 321

- 304 ( Aft ) 412 57.00 1448 59.00 1499

FIGURE 4

. CROSSTUBE DEFLECTION LIMITSBHT 205A, 205A

- 1, 205B INSTRUCTIONS for CONTINUED AIRWORTHINESS AA

- 01136 212, 412, 412EP, 412CF, CROSSTUBES Revision K AGUSTA AB412, AB412EP

, UH

- 1B, UH

- 1H, SW204, SW205

AERONAUTICAL ACCESSORIES February 15, 2012 Page 49 of 78 FIGURE 5 . PAINT REMOVAL ARE A, 212

- 321

- 103 HIGH FORWARD CRO SSTUBE

FIGURE 6

. PAINT REMOVAL AREA, 412

- 321

- 104 / 412

- 321

- 304 HIGH AFT CROSSTU BEBHT 205A, 205A

- 1, 205B INSTRUCTIONS for CONTINUED AIRWORTHINESS AA

- 01136 212, 412, 412EP, 412CF, CROSSTUBES Revision K AGUSTA AB412, AB412EP
, UH

- 1B, UH

- 1H, SW204, SW205

AERONAUTICAL ACCESSORIES February 15, 2012 Page 50 of 78 FIGURE 7 . 212

- 321

- 103 HIGH FORWARD CRO SSTUBE ASSEMBLYBHT 205A, 205A

- 1, 205B INSTRUCTIONS for CONTINUED AIRWORTHINESS AA

- 01136 212, 412, 412EP, 412CF, CROSSTUBES Revision K AGUSTA AB412, AB412EP
, UH

- 1B, UH

- 1H, SW204, SW205

AERONAUTICAL ACCESSORIES February 15, 2012 Page 51 of 78 FIGURE 8 . 212

- 321

- 104 / 212

- 321

- 304 HIGH AFT CROSSTU BE ASSEMBLYBHT 205A, 205A

- 1, 205B INSTRUCTIONS for CONTINUED AIRWORTHINESS AA

- 01136 212, 412, 412EP, 412CF, CROSSTUBES Revision K AGUSTA AB412, AB412EP
, UH

- 1B, UH

- 1H, SW204, SW205

AERONAUTICAL ACCESSORIES February 15, 2012 Page 52 of 78 FIGURE 9 . 412

- 321

- 104 / 212

- 321

- 304 HIGH AFT CROSSTU BE ASSEMBLYBHT 205A, 205A

- 1, 205B INSTRUCTIONS for CONTINUED AIRWORTHINESS AA

- 01136 212, 412, 412EP, 412CF, CROSSTUBES Revision K AGUSTA AB412, AB412EP
, UH

- 1B, UH

- 1H, SW204, SW205

AERONAUTICAL ACCESSORIES February 15, 2012 Page 53 of 78 FIGURE 10

. 412

- 320 /412

- 321 SERIES AFT CROSSTUBE ASSEMBLIESBHT 205A, 205A

- 1, 205B INSTRUCTIONS for CONTINUED AIRWORTHINESS AA

- 01136 212, 412, 412EP, 412CF, CROSSTUBES Revision K AGUSTA AB412, AB412EP
, UH

- 1B, UH

- 1H, SW204, SW205

AERONAUTICAL ACCESSORIES February 15, 2012 Page 54 of 78 FIGURE 11 . CROSSTUBE TO SKID TUBE ATTACHMENTBHT 205A, 205A

- 1, 205B INSTRUCTIONS for CONTINUED AIRWORTHINESS AA

- 01136 212, 412, 412EP, 412CF, CROSSTUBES Revision K AGUSTA AB412, AB412EP

, UH

- 1B, UH

- 1H, SW204, SW205 

## Daily (Series 1) // 25 Hour / 30 Day (Series 2) Inspection Record

AERONAUTICAL ACCESSORIES February 15, 2012 Page 55 of 78



# APPENDIX A :

DAILY (SERIES 1) // 25 HOUR / 30 DAY (SERIES 2) INSPECTIO N RECORDBHT 205A, 205A

- 1, 205B INSTRUCTIONS for CONTINUED AIRWORTHINESS AA

- 01136 212, 412, 412EP, 412CF, CROSSTUBES Revision K AGUSTA AB412, AB412EP

, UH

- 1B, UH

- 1H, SW204, SW205 

## Daily (Series 1) // 25 Hour / 30 Day (Series 2) Inspection Record

AERONAUTICAL ACCESSORIES February 15, 2012 Page 56 of 78

Work Order Number:

_________________________ Registration Number:

_________________________ Serial Number:

_________________________ Total Time:

_________________________ Date:

_________________________ Inspect in accordance with Section 3. The inspection shall consist of the following items:

1. Inspect the Crosstubes for condition

. 2

. Inspect Crosstube Supports for condition and security of attachment (evidence of debonding and/or movement ).

NOTE If any evidence of debonding and/or movement of the Upper and Lower Supports are found, complete the Support removal and rebonding procedures, Section 5.

3

. Visually inspect Crosstube inspection windows, as applicable, for evidence of cracking

.

Signature

________________________ A & P No.

_________________________

Signature

________________________ Inspector

_________________________BHT 205A, 205A

- 1, 205B INSTRUCTIONS for CONTINUED AIRWORTHINESS AA

- 01136 212, 412, 412EP, 412CF, CROSSTUBES Revision K AGUSTA AB412, AB412EP

, UH

- 1B, UH

- 1H, SW204, SW205 

## 100 Hour / 12 Month (Series 1) // 300 Hour (Series 2) Inspection Record

AERONAUTICAL ACCESSORIES February 15, 2012 Page 57 of 78



# APPENDIX B :

100 HOUR / 12 MONTH (SERIES 1) 300 HOUR (SERIES 2) INSPECTION RECORDBHT 205A, 205A

- 1, 205B INSTRUCTIONS for CONTINUED AIRWORTHINESS AA

- 01136 212, 412, 412EP, 412CF, CROSSTUBES Revision K AGUSTA AB412, AB412EP

, UH

- 1B, UH

- 1H, SW204, SW205 

## 100 Hour / 12 Month (Series 1) // 300 Hour (Series 2) Inspection Record

AERONAUTICAL ACCESSORIES February 15, 2012 Page 58 of 78

Work Order Number:

_________________________ Registration Number:

_________________________ Serial Number:

_________________________ Total Time:

_________________________ Date:

_________________________ Inspect in accordance with Section 3. The inspection shall consist of the following items:

1. Perform Daily Inspection (Series 1 Inspection) / 25 hour / 30 Day Inspection (Series 2 Inspection ).

2

. Inspect forward and aft caps holding Crosstubes to helicopter for security, and the rubber pads for looseness and/or deterioration.

3

. Visually inspect Crosstubes for damage as follows:

NOTE Particular care should be taken to inspect in the areas of the Supports at the aircraft attach points.

a. Inspect the Crosstube for scratches, nicks, dents, and corrosion and note the depth of the damage. (Refer to the zones and limits shown in Figure 3 .) The minimal longitudinal distance between repairs is 3.0 inches. Crosstubes exceeding the damage limits shown in Table 1 must be replaced

.
NOTE The limits of the damage are also restricted axially and radially as shown in Figure 3

.
b. Visually inspect the Supports for nicks, dents, and corrosion. Support damage and repair limits: .020 in. depth for a maximum area of 1.0 square inch. No more than two repairs per support are allowed. Replace Support if damaged beyond limits

5

. Check the torque on the U

- bolts that attach the Supports (80

– 100 in

- lbs / 9.0

– 11.3 Nm). Retorque if necessary.

Signature

________________________ A & P No.

_________________________

Signature

________________________ Inspector

_________________________BHT 205A, 205A

- 1, 205B INSTRUCTIONS for CONTINUED AIRWORTHINESS AA

- 01136 212, 412, 412EP, 412CF, CROSSTUBES Revision K AGUSTA AB412, AB412EP

, UH

- 1B, UH

- 1H, SW204, SW205 

## At 7500 Takeoff/Landings / / Every Subsequent 200 Takeoff/Landings 212

- 321

- 103 High Forward Crosstube ONLY Inspection Record

AERONAUTICAL ACCESSORIES February 15, 2012 Page 59 of 78



# APPENDIX C :

AT 7500 TAKEOFF/LAND INGS // EVERY SUBSEQ UENT 200 TAKEOFF/LAN DINGS 212

- 321

- 103 HIGH FORWARD CRO SSTUBE ONLY INSPECTI ON RECORDBHT 205A, 205A

- 1, 205B INSTRUCTIONS for CONTINUED AIRWORTHINESS AA

- 01136 212, 412, 412EP, 412CF, CROSSTUBES Revision K AGUSTA AB412, AB412EP

, UH

- 1B, UH

- 1H, SW204, SW205 

## At 7500 Takeoff/Landings / / Every Subsequent 200 Takeoff/Landings 212

- 321

- 103 High Forward Crosstube ONLY Inspection Record

AERONAUTICAL ACCESSORIES February 15, 2012 Page 60 of 78

Work Order Number:

_________________________ Registration Number:

_________________________ Serial Number:

_________________________ Total Time:

_________________________ Date:

_________________________ Inspect in accordance with Section 3. The inspection shall consist of the following items:

1. Use MIL

- PRF

- 87937 cleaning compound prepared in accordance with the manufacturer’s recommendations to clean all residue and dirt from the cross tube surfaces shown in Figure 1.

2

. Using at least 10X magnification and a strong light source, visually inspect the clear coated crosstube areas for indications of cracking

. 3

. If cracking is suspected, remove clear coat and primer per steps 4 thru 6 below and inspect per step 7

.
WARNING

IF CRACKING IS DISCOVERED, THE CROSSTUBE IS NO LONGER AIRWORTHY AND MUST BE IMMEDIATELY REPLACED. REMOVE AND REPLACE CROSSTUBE PER SECTION 5 OF THIS REPORT.

4

. Apply MIL

- R

- 81294, Type I or II chemical paint remover with a brush and allow it to set from 15 to 45 minutes to soften paint

. 5

. Using a stiff fiber brush and clean water, rinse paint from crosstube. If required, use abrasive pad (Scotch

- Brite, Type A) and MIL

- R

- 81294, Type I or II chemical paint remover to aid in lifting paint. Brush crosstube with abrasive pad in the longitudinal direction, using care so as not to abrade crosstube metal surface

.
WARNING

DO NOT SAND CROSSTUBE IN A CIRCUMFERENTIAL DIRECTION

.
6. Rinse part clean with clean water and dry thoroughly

.
NOTE Reapplication of chemical paint remover may be required to ensure that paint and primer is completely removed so that the metal surface of the cross tube is clearly visible. If required, repeat steps 4 thru 6

.BHT 205A, 205A

- 1, 205B INSTRUCTIONS for CONTINUED AIRWORTHINESS AA

- 01136 212, 412, 412EP, 412CF, CROSSTUBES Revision K AGUSTA AB412, AB412EP

, UH

- 1B, UH

- 1H, SW204, SW205 

## At 7500 Takeoff/Landings / / Every Subsequent 200 Takeoff/Landings 212

- 321

- 103 High Forward Crosstube ONLY Inspection Record

AERONAUTICAL ACCESSORIES February 15, 2012 Page 61 of 78

7

. Using at least 10X magnification and a strong light source, visually inspect the stripped areas for indications of cracking. If cracking is suspected, fluorescent penetrant inspect crosstube per ASTM E1417, Type I, Method B, C, or D, Level 2 in accordance with Bell Helicopter Standard Practices Manual (BHT

- ALL

- SPM)

.
WARNING

IF CRACKING IS DISCOVERED, THE CROSSTUBE IS NO LONGER AIRWORTHY AND MUST BE IMMEDIATELY REPLACED. REMOVE AND REPLACE CROSSTUBE PER SECTION 5 OF THIS REPORT.

8

. Following crosstube inspection, coat the stripped crosstube area with MIL

- PRF

- 85582 primer (.0006

– .0009 thick) by spraying in accordance with manufacturer’s instructions. Allow primer to cure per manufacturer instructions

.
NOTE

The MIL

- PRF

- 85582 primer (PRC

- DeSoto EWDE 072A/B) [packaged as a 1

- gallon, 1

- qt (Parts A&B) kit (P/N EWDE072)] and the MIL

- PRF

- 85285, Type I clear coat paint (Deft 03X085) [packaged as a 3

- qt kit (P/N MIL

- PRF

- 85285)] may be procured from a Bell Helicopter Supply Center. The primer and paint may also be procured [packaged in 1

- qt, primer and paint, kits (P/N 1272K)] from Aerospace Products, Inc., 6413 Midway Road, Halton City, TX 76117 (817

- 332

- 1669 )

.
9

. Following primer cure, paint the area with MIL

- PRF

- 85285 polyurethane clear coat paint by spraying in accordance with manufacturer’s instructions. Allow paint to cure per manufacturer instructions

.

Signature

________________________ A & P No.

_________________________

Signature

________________________ Inspector

_________________________BHT 205A, 205A

- 1, 205B INSTRUCTIONS for CONTINUED AIRWORTHINESS AA

- 01136 212, 412, 412EP, 412CF, CROSSTUBES Revision K AGUSTA AB412, AB412EP

, UH

- 1B, UH

- 1H, SW204, SW205 

## At 10,000 Takeoff/Landings / / Every Subsequent 12 Month / 2500 Takeoff/Landings Dimensional Inspection 212

- 321

- 103 High Forward Crosstube ONLY Inspection Record

AERONAUTICAL ACCESSORIES February 15, 2012 Page 62 of 78



# APPENDIX D : AT 10,000 TAKEOFF/LA NDINGS // EVERY SUBS EQUENT 12 MONTH / 2500 TAKEOFF/LANDINGS DIM ENSIONAL INSPECTION 212

- 321

- 103 HIGH FORWARD CRO SSTUBE ONLY INSPECTI ON RECORDBHT 205A, 205A

- 1, 205B INSTRUCTIONS for CONTINUED AIRWORTHINESS AA

- 01136 212, 412, 412EP, 412CF, CROSSTUBES Revision K AGUSTA AB412, AB412EP

, UH

- 1B, UH

- 1H, SW204, SW205 

## At 10,000 Takeoff/Landings / / Every Subsequent 12 Month / 2500 Takeoff/Landings Dimensional Inspection 212

- 321

- 103 High Forward Crosstube ONLY Inspection Record

AERONAUTICAL ACCESSORIES February 15, 2012 Page 63 of 78

Work Order Number:

_________________________ Registration Number:

_________________________ Serial Number:

_________________________ Total Time:

_________________________ Date:

_________________________ Inspect in accordance with Section 3. The inspection shall consist of the following items:

1. Hoist or jack the helicopter until no weight is on the skid tubes

. 2

. Measure the lateral distance between the two forward Crosstube attachment straps. Measure the lateral distance between the two aft Crosstube attachment straps. Divide these dimensions by two to determine the helicopter centerline, BL 0.00

. 3

. Measure the Crosstube horizontal deflection from the centerline of the helicopter, BL 0.00, to the outside of the skid tubes

. 4

. The Crosstube horizontal deflection as measured in step 3 above must be within the limits as shown in Figure 4 . Crosstubes that measure outside of the limits must be replaced

.

Signature

________________________ A & P No.

_________________________

Signature

________________________ Inspector

_________________________BHT 205A, 205A

- 1, 205B INSTRUCTIONS for CONTINUED AIRWORTHINESS AA

- 01136 212, 412, 412EP, 412CF, CROSSTUBES Revision K AGUSTA AB412, AB412EP

, UH

- 1B, UH

- 1H, SW204, SW205 

## At 12,500 Takeoff/Landings / / Every Subsequent 5,000 Takeoff/Landings 212

- 321

- 103 High Forward Crosstube ONLY Inspection/Overhaul Record

AERONAUTICAL ACCESSORIES February 15, 2012 Page 64 of 78



# APPENDIX E : AT 12,500 TAKEOFF/LA NDINGS // EVERY SUBS EQUENT 5,000 TAKEOFF /LANDINGS 212

- 321

- 103 HIGH FORWARD CRO SSTUBE ONLY INSPECTI ON/OVERHAUL R ECORDBHT 205A, 205A

- 1, 205B INSTRUCTIONS for CONTINUED AIRWORTHINESS AA

- 01136 212, 412, 412EP, 412CF, CROSSTUBES Revision K AGUSTA AB412, AB412EP

, UH

- 1B, UH

- 1H, SW204, SW205 

## At 12,500 Takeoff/Landings / / Every Subsequent 5,000 Takeoff/Landings 212

- 321

- 103 High Forward Crosstube ONLY Inspection/Overhaul Record

AERONAUTICAL ACCESSORIES February 15, 2012 Page 65 of 78

Work Order Number:

_________________________ Registration Number:

_________________________ Serial Number:

_________________________ Total Time:

_________________________ Date:

_________________________ NOTE Neither the assignment of a time period overhaul of a component nor failure to assign a time period for overhaul of a component constitutes a warranty of any kin d. The only warranty applicable to the component is that warranty included in the Purchase Agreement for the component.
Time between overhauls and inspection periods is based upon experience, testing, and engineering judgment and is subject to change at t he sole discretion of Aeronautical Accessories or an appropriate government agency.

WARNING ALL PARTS REMOVED, DUE TO REACHING THEIR LIMITS OR AS A RESULT OF AN ACCIDENT/INCIDENT AND DEEMED UNAIRWORTHY, SHALL BE PERMANENTLY MARKED AS SCRAP OR PHYSICALLY DESTROYED TO THE EXTENT THAT THERE IS NO CHANCE OF REPAIR OR INSTALLATION ON ANY HELICOPTER OR COMPONENT.
Inspect in accordance with Section 3. The inspection shall consist of the following items:

1. Remove fairings from Forward Crosstube Assembly, if installed

. 2

. Hoist or jack the helicopter until no weight is on the skid tubes

. 3

. Remove forward straps and associated hardware from forward fuselage fittings

. 4

. Remove aft straps and associated hardware from aft fuselage fittings

. 5. Raise helicopter until it is clear of skid landing gear, and remove landing
gear

6. Remove crosstube supports from Forward Crosstube Assembly in accordance with Section 5

.BHT 205A, 205A

- 1, 205B INSTRUCTIONS for CONTINUED AIRWORTHINESS AA

- 01136 212, 412, 412EP, 412CF, CROSSTUBES Revision K AGUSTA AB412, AB412EP

, UH

- 1B, UH

- 1H, SW204, SW205 

## At 12,500 Takeoff/Landings / / Every Subsequent 5,000 Takeoff/Landings 212

- 321

- 103 High Forward Crosstube ONLY Inspection/Overhaul Record

AERONAUTICAL ACCESSORIES February 15, 2012 Page 66 of 78 WARNING DO NOT SAND CROSSTUBE IN A CIRCUMFERENTIAL DIRECTION.

7

. Remove aged sealant from Crosstube by scraping with a sharp piece of plastic. Use of a heat gun to soften the sealant may facilitate removal. Finish by lightly sanding with 400 grit abrasive cloth or paper in the longitudinal direction of the crosstube

. 8

. Prepare crosstube by chemically removing crosstube paint and primer to top of saddles

.
a. Apply MIL

- R

- 81294, Type I or II chemical paint remover with a brush and allow it to set from 15 to 45 minutes to soften paint. b. Using a stiff fiber brush and clean water, rinse paint from crosstube. If required, use abrasive pad (Scotch

- Brite, Type A) and MIL

- R

- 81294, Type I or II chemical paint remover to aid in lifting paint. Brush crosstube with abrasive pad in the longitudinal direction, using care so as not to abrade crosstube metal surface.

WARNING DO NOT SAND CROSSTUBE IN A CIRCUMFERENTIAL DIRECTION.

c. Rinse part clean with clean water and dry thoroughly. Reapplication of chemical paint remover may be required to ensure that paint and primer is completely removed so that the (bare) metal surface of the cross tube is clearly visible
9

. When crosstube is not to be processed immediately after cleaning, apply corrosion preventive oil, to all parts to protect against corrosion. Wrap parts in barrier material and secure with tape

. 10

. Inspect the stripped areas of the Crosstubes using fluorescent penetrant method per ASTM E1417, Type I, Method B, C, or D, Level 2, in accordance with Bell Helicopter Standard Practices Manual (BHT

- ALL

- SPM). Refer to BHT

- ALL

- SPM for fluorescent penetrant inspection procedures

.
WARNING IF CRACKING IS DISCOVERED, THE CROSSTUBE IS NO LONGER AIRWORTHY AND MUST BE IMMEDIATELY REPLACED. REMOVE AND REPLACE CROSSTUBE PER SECTION 5 OF THIS REPORT

.
11. Repair damage within repairable limits in accordance with Section 3.BHT 205A, 205A

- 1, 205B INSTRUCTIONS for CONTINUED AIRWORTHINESS AA

- 01136 212, 412, 412EP, 412CF, CROSSTUBES Revision K AGUSTA AB412, AB412EP

, UH

- 1B, UH

- 1H, SW204, SW205 

## At 12,500 Takeoff/Landings / / Every Subsequent 5,000 Takeoff/Landings 212

- 321

- 103 High Forward Crosstube ONLY Inspection/Overhaul Record

AERONAUTICAL ACCESSORIES February 15, 2012 Page 67 of 78

12

. Refinish crosstube by applying MIL

- PRF

- 85582 primer and MIL

- PRF

- 85285 paint (or equivalent) per manufacturer instructions to the stripped areas. The areas to be inspected per Section 3 should be masked to omit MIL

- PRF

- 85285 paint as shown in Figure 2. Paint inspection areas with MIL

- PRF

- 85285 Type I Gloss Clear coat per manufacturer instructions and Figure 2

. 13

. Reinstall Forward Crosstube straps and fittings per Section 5

. 14. Reinstall landing ge ar/Crosstubes to aircraft per Section 5

. 15. Reinstall fairings, as applicable, and return aircraft to service

.

Signature

________________________ A & P No.

_________________________

Signature

________________________ Inspector

_________________________BHT 205A, 205A

- 1, 205B INSTRUCTIONS for CONTINUED AIRWORTHINESS AA

- 01136 212, 412, 412EP, 412CF, CROSSTUBES Revision K AGUSTA AB412, AB412EP

, UH

- 1B, UH

- 1H, SW204, SW205 

## At 2500 Takeoff/Landings / / Every Subsequent 450 Takeoff/Landings 412

- 321

- 104 / 412

- 321

- 304 High Aft Crosstube ONLY Inspection Record

AERONAUTICAL ACCESSORIES February 15, 2012 Page 68 of 78



# APPENDIX F :

AT 2500 TAKEOFF/LANDING S // EVERY SUBSEQUEN T 450 TAKEOFF/LANDIN GS 412

- 321

- 104 / 412

- 321

- 304 HIGH AFT CROSSTU BE ONLY INSPECTION R ECORDBHT 205A, 205A

- 1, 205B INSTRUCTIONS for CONTINUED AIRWORTHINESS AA

- 01136 212, 412, 412EP, 412CF, CROSSTUBES Revision K AGUSTA AB412, AB412EP

, UH

- 1B, UH

- 1H, SW204, SW205 

## At 2500 Takeoff/Landings / / Every Subsequent 450 Takeoff/Landings 412

- 321

- 104 / 412

- 321

- 304 High Aft Crosstube ONLY Inspection Record

AERONAUTICAL ACCESSORIES February 15, 2012 Page 69 of 78

Work Order Number:

_________________________ Registration Number:

_________________________ Serial Number:

_________________________ Total Time:

_________________________ Date:

_________________________ Inspect in accordance with Section 3. The inspection shall consist of the following items:

1. Use MIL

- PRF

- 87937 cleaning compound prepared in accordance with the manufacturer’s recommendations to clean all residue and dirt from the cross tube surfaces shown in Figure 2.

2

. Using at least 10X magnification and a strong light source, visually inspect the clear coated crosstube areas for indications of cracking

. 3

. If cracking is suspected, remove clear coat and primer per steps 4 thru 6 below and inspect per step 7

.
WARNING

IF CRACKING IS DISCOVERED, THE CROSSTUBE IS NO LONGER AIRWORTHY AND MUST BE IMMEDIATELY REPLACED. REMOVE AND REPLACE CROSSTUBE PER SECTION 5 OF THIS REPORT.

4

. Apply MIL

- R

- 81294, Type I or II chemical paint remover with a brush and allow it to set from 15 to 45 minutes to soften paint

. 5

. Using a stiff fiber brush and clean water, rinse paint from crosstube. If required, use abrasive pad (Scotch

- Brite, Type A) and MIL

- R

- 81294, Type I or II chemical paint remover to aid in lifting paint. Brush crosstube with abrasive pad in the longitudinal direction, using care so as not to abrade crosstube metal surface

.
WARNING

DO NOT SAND CROSSTUBE IN A CIRCUMFERENTIAL DIRECTION.

6. Rinse part clean with clean water and dry thoroughly

.
NOTE Reapplication of chemical paint remover may be required to ensure that paint and primer is completely removed so that the metal surface of the cross tube is clearly visible. If required, repeat steps 4 thru 6.BHT 205A, 205A

- 1, 205B INSTRUCTIONS for CONTINUED AIRWORTHINESS AA

- 01136 212, 412, 412EP, 412CF, CROSSTUBES Revision K AGUSTA AB412, AB412EP

, UH

- 1B, UH

- 1H, SW204, SW205 

## At 2500 Takeoff/Landings / / Every Subsequent 450 Takeoff/Landings 412

- 321

- 104 / 412

- 321

- 304 High Aft Crosstube ONLY Inspection Record

AERONAUTICAL ACCESSORIES February 15, 2012 Page 70 of 78

7

. Using at least 10X magnification and a strong light source, visually inspect the stripped areas for indications of cracking. If cracking is suspected, fluorescent penetrant inspect crosstube per ASTM E1417, Type I, Method B, C, or D, Level 2 in accordance with Bell Helicopter Standard Practices Manual (BHT

- ALL

- SPM)

.
WARNING

IF CRACKING IS DISCOVERED, THE CROSSTUBE IS NO LONGER AIRWORTHY AND MUST BE IMMEDIATELY REPLACED. REMOVE AND REPLACE CROSSTUBE PER SECTION 5 OF THIS REPORT.

8

. Following crosstube inspection, coat the stripped crosstube area with MIL

- PRF

- 85582 primer (.0006

– .0009 thick) by spraying in accordance with manufacturer’s instructions. Allow primer to cure per manufacturer instructions

.
NOTE

The MIL

- PRF

- 85582 primer (PRC

- DeSoto EWDE 072A/B) [packaged as a 1

- gallon, 1

- qt (Parts A&B) kit (P/N EWDE072)] and the MIL

- PRF

- 85285, Type I clear coat paint (Deft 03X085) [packaged as a 3

- qt kit (P/N MIL

- PRF

- 85285)] may be procured from a Bell Helicopter Supply Center. The primer and paint may also be procured [packaged in 1

- qt, primer and paint, kits (P/N 1272K)] from Aerospace Products, Inc., 6413 Midway Road, Halton City, TX 76117 (817

- 332

- 1669 )

.
9

. Following primer cure, paint the area with MIL

- PRF

- 85285 polyurethane clear coat paint by spraying in accordance with manufacturer’s instructions. Allow paint to cure per manufacturer instructions

.

Signature

________________________ A & P No.

_________________________

Signature

________________________ Inspector

_________________________BHT 205A, 205A

- 1, 205B INSTRUCTIONS for CONTINUED AIRWORTHINESS AA

- 01136 212, 412, 412EP, 412CF, CROSSTUBES Revision K AGUSTA AB412, AB412EP

, UH

- 1B, UH

- 1H, SW204, SW205 

## At 2,500 Takeoff/Landings / / Every Subsequent 12 Month / 2,500 Takeoff/Landings Dimensional Inspection 412

- 321

- 104 / 412

- 321

- 304 High Aft Crosstube ONLY Inspection Record

AERONAUTICAL ACCESSORIES February 15, 2012 Page 71 of 78



# APPENDIX G : AT 2,500 TAKEOFF/LAN DINGS // EVERY SUBSE QUENT 12 MONTH / 2,500 TAKEOFF/LANDIN GS DIMENSIONAL INSPE CTION 412

- 321

- 104 / 412

- 321

- 304 HIGH AFT CROSSTU BE ONLY INSPECTION R ECORDBHT 205A, 205A

- 1, 205B INSTRUCTIONS for CONTINUED AIRWORTHINESS AA

- 01136 212, 412, 412EP, 412CF, CROSSTUBES Revision K AGUSTA AB412, AB412EP

, UH

- 1B, UH

- 1H, SW204, SW205 

## At 2,500 Takeoff/Landings / / Every Subsequent 12 Month / 2,500 Takeoff/Landings Dimensional Inspection 412

- 321

- 104 / 412

- 321

- 304 High Aft Crosstube ONLY Inspection Record

AERONAUTICAL ACCESSORIES February 15, 2012 Page 72 of 78

Work Order Number:

_________________________ Registration Number:

_________________________ Serial Number:

_________________________ Total Time:

_________________________ Date:

_________________________ Inspect in accordance with Section 3. The inspection shall consist of the following items:

1. Hoist or jack the helicopter until no weight is on the skid tubes

. 2

. Measure the lateral distance between the two forward Crosstube attachment straps. Measure the lateral distance between the two aft Crosstube attachment straps. Divide these dimensions by two to determine the helicopter centerline, BL 0.00

. 3

. Measure the Crosstube horizontal deflection from the centerline of the helicopter, BL 0.00, to the outside of the skid tubes

. 4

. The Crosstube horizontal deflection as measured in step 3 above must be within the limits as shown in Figure 4 . Crosstubes that measure outside of the limits must be replaced

.

Signature

________________________ A & P No.

_________________________

Signature

________________________ Inspector

_________________________BHT 205A, 205A

- 1, 205B INSTRUCTIONS for CONTINUED AIRWORTHINESS AA

- 01136 212, 412, 412EP, 412CF, CROSSTUBES Revision K AGUSTA AB412, AB412EP

, UH

- 1B, UH

- 1H, SW204, SW205 

## At 7,500 Takeoff/Landings / / Every Subsequent 5,000 Takeoff/Landings 412

- 321

- 104 / 412

- 321

- 304 High Aft Crosstube ONLY

Inspection/Overhaul Record

AERONAUTICAL ACCESSORIES February 15, 2012 Page 73 of 78



# APPENDIX H : AT 7,500 TAKEOFF/LAN DINGS // EVERY SUBSE QUENT 5,000 TAKEOFF/ LANDINGS 412

- 321

- 104 / 412

- 321

- 304 HIGH AFT CROSSTU BE ONLY IN SPECTION/OVERHAUL RE CORDBHT 205A, 205A

- 1, 205B INSTRUCTIONS for CONTINUED AIRWORTHINESS AA

- 01136 212, 412, 412EP, 412CF, CROSSTUBES Revision K AGUSTA AB412, AB412EP

, UH

- 1B, UH

- 1H, SW204, SW205 

## At 7,500 Takeoff/Landings / / Every Subsequent 5,000 Takeoff/Landings 412

- 321

- 104 / 412

- 321

- 304 High Aft Crosstube ONLY

Inspection/Overhaul Record

AERONAUTICAL ACCESSORIES February 15, 2012 Page 74 of 7 8

Work Order Number:

_________________________ Registration Number:

_________________________ Serial Number:

_________________________ Total Time:

_________________________ Date:

_________________________ NOTE Neither the assignment of a time period overhaul of a component nor failure to assign a time period for overhaul of a component constitutes a warranty of any kind. The only warranty applicable to the component is that warranty included in the Purchase Agreement for the component.
Time between overhauls and inspection periods is based upon experience, testing, and engineering judgment and is sub ject to change at the sole discretion of Aeronautical Accessories or an appropriate government agency.

WARNING ALL PARTS REMOVED, DUE TO REACHING THEIR LIMITS OR AS A RESULT OF AN ACCIDENT/INCIDENT AND DEEMED UNAIRWORTHY, SHALL BE PERMANENTLY MARKED AS SCRAP OR PHYSICALLY DESTROYED TO THE EXTENT THAT THERE IS NO CHANCE OF REPAIR OR INSTALLATION ON ANY HELICOPTER OR COMPONENT.
Inspect in accordance with Section 3. The inspection shall consist of the following items:

1. Remove fairings from Aft Crosstube Assembly, if installed

. 2

. Hoist or jack the helicopter until no weight is on the skid tubes

. 3

. Remove forward straps and associated hardware from forward fuselage fittings

. 4

. Remove aft straps and associated hardware from aft fuselage fittings

. 5. Raise helicopter until it is clear of skid landing gear, and remove landing
gear

6. Remove Aft Crosstube Assembly, Aft Crosstube Beam Assembly, and both Aft Crosstube Clamp Assemblies in accordance with Section 5

.
NOTE The Upper Center Support on the Aft Crosstube is bonded with structural adhesive and is not designed for removal

.BHT 205A, 205A

- 1, 205B INSTRUCTIONS for CONTINUED AIRWORTHINESS AA

- 01136 212, 412, 412EP, 412CF, CROSSTUBES Revision K AGUSTA AB412, AB412EP

, UH

- 1B, UH

- 1H, SW204, SW205 

## At 7,500 Takeoff/Landings / / Every Subsequent 5,000 Takeoff/Landings 412

- 321

- 104 / 412

- 321

- 304 High Aft Crosstube ONLY

Inspection/Overhaul Record

AERONAUTICAL ACCESSORIES February 15, 2012 Page 75 of 78 WARNING DO NOT SAND CROSSTUBE IN A CIRCUMFERENTIAL DIRECTION.

7

. Remove aged sealant from Crosstube by scraping with a sharp piece of plastic. Use of a heat gun to soften the sealant may facilitate removal. Finish by lightly sanding with 400 grit abrasive cloth or paper in the longitudinal direction of the crosstube

. 8

. Prepare crosstube by chemically removing crosstube paint and primer to top of saddles

. CAUTION

Protect Upper Center Support area on aft high crosstube to prevent contamination by paint strippers and penetrant inspection chemicals

.

a. Apply MIL

- R

- 81294, Type I or II chemical paint remover with a brush and allow it to set from 15 to 45 minutes to soften paint. b. Using a stiff fiber brush and clean water, rinse paint from crosstube. If required, use abrasive pad (Scotch

- Brite, Type A) and MIL

- R

- 81294, Type I or II chemical paint remover to aid in lifting paint. Brush crosstube with abrasive pad in the longitudinal direction, using care so as not to abrade crosstube metal surface.

WARNING DO NOT SAND CROSSTUBE IN A CIRCUMFERENTIAL DIRECTION.

c. Rinse part clean with clean water and dry thoroughly. Reapplication of chemical paint remover may be required to ensure that paint and primer is completely removed so that the (bare) metal surface of the cross tube is clearly visible.
9

. When crosstube is not to be processed immediately after cleaning, apply corrosion preventive oil, to all parts to protect against corrosion. Wrap parts in barrier material and secure with tape

. 10

. Inspect the stripped areas of the Crosstubes using fluorescent penetrant method per ASTM E1417, Type I, Method B, C, or D, Level 2, in accordance with Bell Helicopter Standard Practices Manual (BHT

- ALL

- SPM). Refer to BHT

- ALL

- SPM for fluorescent penetrant inspection procedures

.BHT 205A, 205A

- 1, 205B INSTRUCTIONS for CONTINUED AIRWORTHINESS AA

- 01136 212, 412, 412EP, 412CF, CROSSTUBES Revision K AGUSTA AB412, AB412EP

, UH

- 1B, UH

- 1H, SW204, SW205 

## At 7,500 Takeoff/Landings / / Every Subsequent 5,000 Takeoff/Landings 412

- 321

- 104 / 412

- 321

- 304 High Aft Crosstube ONLY

Inspection/Overhaul Record

AERONAUTICAL ACCESSORIES February 15, 2012 Page 76 of 78 WARNING IF CRACKING IS DISCOVERED, THE CROSSTUBE IS NO LONGER AIRWORTHY AND MUST BE IMMEDIATELY REPLACED. REMOVE AND REPLACE CROSSTUBE PER SECTION 5 OF THIS REPORT

.
11. Repair damage within repairable limits in accordance with Section 3.

12

. Refinish crosstube by applying MIL

- PRF

- 85582 primer and MIL

- PRF

- 85285 paint (or equivalent) per manufacturer instructions to the stripped areas. The areas to be inspected per Section 3 should be masked to omit MIL

- PRF

- 85285 paint as shown in Figure 2. Paint inspection areas with MIL

- PRF

- 85285 Type I Gloss Clear coat per manufacturer instructions and Figure 2

. 13

. Reinstall Aft Crosstube Clamp Assemblies and Aft Crosstube Beam Assembly in accordance with Section 5

. 14. Reinstall landing gear/Crosstubes to aircraft per Section 5

. 15. Reinstall fairings, as applicable, and return aircraft to service

.

Signature

________________________ A & P No.

_________________________

Signature

________________________ Inspector

_________________________BHT 205A, 205A

- 1, 205B INSTRUCTIONS for CONTINUED AIRWORTHINESS AA

- 01136 212, 412, 412EP, 412CF, CROSSTUBES Revision K AGUSTA AB412, AB412EP

, UH

- 1B, UH

- 1H, SW204, SW205
HISTORICAL SERVICE R ECORD

AERONAUTICAL ACCESSORIES February 15, 2012 Page 77 of 78



# APPENDIX I :

HISTORICAL SERVICE R ECORDBHT 205A, 205A

- 1, 205B INSTRUCTIONS for CONTINUED AIRWORTHINESS AA

- 01136 212, 412, 412EP, 412CF, CROSSTUBES Revision K AGUSTA AB412, AB412EP

, UH

- 1B, UH

- 1H, SW204, SW205
HISTORICAL SERVICE R ECORD

AERONAUTICAL ACCESSORIES February 15, 2012 Page 78 of 78