SERVICE BULLETIN

SERVICE BULLETIN M20-318

Date: June 2, 2014

THIS BULLETIN IS FAA APPROVED FOR ENGINEERING DESIGN

MOONEY INTERNATIONAL

165 Al Mooney Road North

Kerrville, Texas 78028

CORPORATION

MOONEY INTERNATIONAL CORPORATION 165 Al Mooney Road North, Kerrville,

Texas 78028 tel: 830-896-6000 www.mooney.com

Page 1 of 7

SUBJECT: Outboard Empennage Attach Fittings on some production M20R and M20TN Aircraft and

procured through Mooney Service Parts.

MODELS/ SN Mooney M20R -- Serial Numbers 29--0513 thru 29--0519

AFFECTED: Mooney M20TN -- Serial Numbers 31--0101 thru 31--0127

Procured Parts -- Serial Numbers M20M 27--0057, M20R 29--0141, M20C 2313, M20E 761

TIME OF WITHIN NEXT 10 HOURS OF FLIGHT

COMPLIANCE:

INTRODUCTION: During Post--Hibernation inspection of production line aircraft, three outboard empennage

attach fittings, were found to be out of tolerance. These attach fittings are used on current

production M20R and M20TN Airplanes, as well as through the Mooney Service Parts Department. We are issuing this Service Bulletin because we have determined these parts are

not manufactured to Mooney’s Type Design. This will require an inspection, and if found to

be discrepant, corrective action taken. The attached compliance card needs to be filled

out and returned to Mooney International Corporation upon completion of this

Service Bulletin M20--318.

INSTRUCTIONS: Read entire procedures before beginning work.

NOTE:

All work to be done in accordance with FAA AC43.13--2B.

STEP 1 -- Empennage Outboard Attach Fitting(s) -- Inspection:

1.1. Turn master switch -- OFF.

1.2. Remove LH and RH empennage fairing and inspection panel(s).

1.3. Remove empennage assembly per applicable Mooney Service and Maintenance

Manual, (refer to Chapter 53). Stow empennage onto a cradle making sure assembly is

properly secured while performing the work described in this service bulletin.

1.4. Measure thickness of each outer empennage attach fittings 350061-007 (LH) and

350061-008 (RH) with an appropriate micrometer or caliper. The thickness requirements

are .190” +/-- .010” (refer to Figure SB M20-318-2).

1.5. If both attach fittings are within tolerance, proceed to STEP 1.7 of this service bulletin.

1.6. If one or both attach fittings are out of tolerance, proceed to STEP 2 of this service

bulletin.

1.7. Reinstall Empennage Assembly per applicable Mooney Service and Maintenance

Manual refer to Chapter 53 with new mounting hardware found in the M20-318-001

Service Bulletin kit. Shim as required with NAS1149F0463P and NAS1149F0432P

Washers. One minimum each end of 914081-003 Bushings, 3 total maximum per side

(refer to Figures SB M20-318-1 & 2) -- Proceed to Step 2.9 of this Service Bulletin.

STEP 2 -- Empennage Outboard Attach Fitting(s) -- Removal and Replacement:

2.1. Remove tailcone fairing by drilling out Avex rivets 1691-0410 per section 51 of the

applicable Mooney Service and Maintenance Manual, (refer to Figures SB

M20-318-1 & 3).

2.2. Remove tailcone skin rivets MS20470AD (as required) to access the empennage

attach fittings per section 51 of the applicable Mooney Service and Maintenance Manual,

(refer to Figures SB M20-318-1 & 3).

CAUTION:

Take care when removing existing rivets or huck bolts with a drill bit or huck collar splitter tool,

do not damage or distort existing holes -- Do not crease or bend tailcone skin when accessing

attach fittings.
SERVICE BULLETIN

SERVICE BULLETIN M20-318

Date: June 2, 2014

THIS BULLETIN IS FAA APPROVED FOR ENGINEERING DESIGN

MOONEY INTERNATIONAL

165 Al Mooney Road North

Kerrville, Texas 78028

CORPORATION

MOONEY INTERNATIONAL CORPORATION 165 Al Mooney Road North, Kerrville,

Texas 78028 tel: 830-896-6000 www.mooney.com

Page 2 of 7

2.3. Using a huck collar splitter or equivalent tool, carefully cut and remove the existing huck

bolt/collars (qty 5 per side) and MS20470AD rivets (qty 5 per side) to remove outer

attach fitting(s).

2.4. Using the new parts from either the M20-318-002 and/or -003 kit, match drill all

components to existing structure, per section 51 of the Mooney Service and Maintenance

Manual (refer to Figures SB M20-318-1 & 2). It may be necessary to install AN174-20A

mounting bolt, 914081-003 Bushing and NAS1149F0463P washers and/or

NAS1149F0432P washers as required to keep attach fitting alignment while match

drilling for huck bolt and rivet holes, use cleco fasteners as required.

NOTE:

All work to be done in accordance with FAA AC43.13--2B. Verify and adjust mounting hardware

grip lengths as required.

2.5. Secure new parts with new rivets MS20470AD (qty 5 per side), Hi-LokR P/N

HL20PB5-10 Pins and HL86--5 collars (qty 4 per side) and Hi-LokR HL20PB5-9 Pins and

HL86--5 collars (qty 1 per side) into place as required, per the Hi-LokR Installation

instructions (refer to Figures M20-318-1 & 3).

CAUTION:

When securing new outboard attach fittings (Match Set), it is critical to ensure proper alignment

with existing empennage attachment bolt holes.

2.6. Visually inspect all MS20470AD rivets and (10) Hi-LokR fasteners to insure they are

properly secured.

2.7. Reattach tailcone skin with new MS20470AD rivets and the tailcone fairing using

1691-0410 rivets as required per section 51 of the applicable Mooney Service and

Maintenance Manual, (refer to Figures SB M20-318-1 & 3).

2.8. Reinstall Empennage Assembly per applicable Mooney Service and Maintenance

Manual refer to Chapter 53 with new mounting hardware found in the M20-318-001

Service Bulletin kit. Shim as required with NAS1149F0463P and NAS1149F0432P

Washers. One minimum each end of 914081-003 Bushings, 3 total maximum per side

(refer to Figures SB M20-318-1 & 2)

2.9. Verify rigging of the flight controls and trim system per applicable MAC Service and

Maintenance Manual.

2.10. Reinstall LH and RH empennage fairing and inspection panel(s).

2.11. Complete log book entry.

NOTE:

Fill out compliance card and send by MAIL, FAX or EMAIL to Mooney International Corporation

as indicated on the attached Compliance Card (see to Figure M20-318-4).

2.12. Return aircraft to service.

2.13. Procedure complete.

WARRANTY: Mooney International Corporation will warrant labor 6 hours for STEP 1 and 12 hours per side

(or 24 hours both) for STEP 2 when corrective action is done in accordance with procedures

of this Service Bulletin for aircraft currently covered under the Mooney International Corporation factory warranty program.

REFERENCE 1. Mooney Service and Maintenance Manual (applicable A/C)

DATA: 2. Hi-LokR Installation Instructions

3. FAA AC43.13--2B (or current revision)
SERVICE BULLETIN

SERVICE BULLETIN M20-318

Date: June 2, 2014

THIS BULLETIN IS FAA APPROVED FOR ENGINEERING DESIGN

MOONEY INTERNATIONAL

165 Al Mooney Road North

Kerrville, Texas 78028

CORPORATION

MOONEY INTERNATIONAL CORPORATION 165 Al Mooney Road North, Kerrville,

Texas 78028 tel: 830-896-6000 www.mooney.com

Page 3 of 7

PARTS LIST: kit part number(s):

Service Bulletin Kit M20--318--001 (Hardware Kit)

Item P/N Description Qty

1. AN174--20A Bolt 2

2. NAS1149F0463P Washer, (shim as required) (.063” thick) 8

3. NAS1149F0432P Washer, (shim as required) (.032” thick) 8

4. MS21044--N4 Nut 2

5. 914081--003 Bushing 2

6. AN5H--32 Bolt 1

7. NAS1149F0563P Washer 2

8. AN310--5 Nut 1

9. MS24665--151 Pin, Cotter 2

10. 440019--000 Spacer 4

11. AN5H--15 Bolt 1

12. NAS1149F0563P Washer 2

13. 914017--000 Bushing 1

14. AN310--5 Nut 1

Service Bulletin Kit M20--318--002 (Empennage Attachment Kit -- Left Hand Side)

Item P/N Description Qty

15. M20-318-005 Empennage Attach Fitting Set (LH) 1

17. HL20PB5-10 Hi--LokR Pins 4

HL86--5 Hi--LokR Collars 4

18. HL20PB5-9 Hi--LokR Pins 1

HL86--5 Hi--LokR Collars 1

19. 1691--0410 Rivet, Avex 25

NPN Hi--LokR Installation Instructions (copy) 1

Note: MS20470AD Rivet(s) -- Shop performing work to supply as required

NPN Safety Wire -- as required

Service Bulletin Kit M20--318--003 (Empennage Attachment Kit -- Right Hand Side)

Item P/N Description Qty

16. M20-318-004 Empennage Attach Fitting Set (RH) 1

17. HL20PB5-10 Hi--LokR Pins 4

HL86--5 Hi--LokR Collars 4

18. HL20PB5-9 Hi--LokR Pins 1

HL86--5 Hi--LokR Collars 1

19. 1691--0410 Rivet, Avex 25

NPN Hi--LokR Installation Instructions (copy) 1

Note: MS20470AD Rivet(s) -- Shop performing work to supply as required

NPN Safety Wire -- as required
SERVICE BULLETIN

SERVICE BULLETIN M20-318

Date: June 2, 2014

THIS BULLETIN IS FAA APPROVED FOR ENGINEERING DESIGN

MOONEY INTERNATIONAL

165 Al Mooney Road North

Kerrville, Texas 78028

CORPORATION

MOONEY INTERNATIONAL CORPORATION 165 Al Mooney Road North, Kerrville,

Texas 78028 tel: 830-896-6000 www.mooney.com

Page 4 of 7

EMPENNAGE

FAIRING

INSPECTION

PANEL

DETAIL A

1

6

4

10

9

5

7

8

11

12

13

14

12

2 or 3

17

18

SHOP

7

SUPPLIED

9

2 or 3

2

2

18

15

2 or 3

2 or 3

2

5

2

1

USE EXISTING

HINGE PIN

MS20470AD

SHOP

SUPPLIED

MS20470AD

SAFETY WIRE

AS REQUIRED

BOTH PLACES

19

Match

Set

16

Match

Set

Figure SB M20-318-1 - EMPENNAGE TRIM ATTACH FITTING INSPECTION AND REPLACEMENT
SERVICE BULLETIN

SERVICE BULLETIN M20-318

Date: June 2, 2014

THIS BULLETIN IS FAA APPROVED FOR ENGINEERING DESIGN

MOONEY INTERNATIONAL

165 Al Mooney Road North

Kerrville, Texas 78028

CORPORATION

MOONEY INTERNATIONAL CORPORATION 165 Al Mooney Road North, Kerrville,

Texas 78028 tel: 830-896-6000 www.mooney.com

Page 5 of 7

.190” +/-- 0.010”

MEASURE

.190” +/-- 0.010”

M20-318-005

THICKNESS

MEASURE

THICKNESS

.75”

M20-318-004

OUTBOARD (LH)

MATCH SET

ATTACH FITTING

HI--LOK

HL20PB5-9

HI--LOK

HL20PB5-10

(4 PER SIDE)

(1 PER SIDE)

SHIM AS REQUIRED WITH NAS1149F0463P

AND NAS11490435P WASHERS. ONE MINIMUM

EACH END OF 914081-003 BUSHING -- 3 TOTAL

MAXIMUM

VIEW LOOKING DOWN AT ATTACH FITTINGS

RIVETS

MS20470AD

(5 PER SIDE)

MATCH

DRILL HOLES

TO EXISTING

ATTACH STIFFNER

It may be necessary to install AN174--20A mounting

bolt, 914081--003 Bushing and NAS1149F0463P

washers and/or NAS1149F0432P washers as required

to keep attach fitting alignment while match drilling

for huck bolt and rivet holes.

NOTE:

OUTBOARD (RH)

MATCH SET

ATTACH FITTING

Figure SB M20-318-2 - EMPENNAGE TRIM ATTACH FITTING MEASUREMENT AND FIXTURE
SERVICE BULLETIN

SERVICE BULLETIN M20-318

Date: June 2, 2014

THIS BULLETIN IS FAA APPROVED FOR ENGINEERING DESIGN

MOONEY INTERNATIONAL

165 Al Mooney Road North

Kerrville, Texas 78028

CORPORATION

MOONEY INTERNATIONAL CORPORATION 165 Al Mooney Road North, Kerrville,

Texas 78028 tel: 830-896-6000 www.mooney.com

Page 6 of 7

CAUTION:

When securing new outboard attach fittings, it is critical to ensure proper alignment with

existing empennage attachment bolt holes.

HI--LOK

HL20PB5-9

(1 PER SIDE)

RIVET

MS20470AD

(5 PER SIDE)

HI--LOK

HL20PB5-10

(4 PER SIDE)

ENSURE PROPER

BOLT HOLE

ALIGNMENT

CLECO

AS REQUIRED

RIVET, AVEX

1691-0410

RIVET

MS20470AD

CAUTION:

Take care when removing existing rivets or huck bolts with a drill bit or huck collar

splitter tool, do not damage or distort existing holes -- Do not crease or bend tailcone

skin when accessing attach fittings.

M20-318-005

SHOWN

REF: ATTACH FITTING

MATCH SET (LH)

Figure SB M20-318-3 - TAILCONE SKIN REMOVAL
SERVICE BULLETIN

SERVICE BULLETIN M20-318

Date: June 2, 2014

THIS BULLETIN IS FAA APPROVED FOR ENGINEERING DESIGN

MOONEY INTERNATIONAL

165 Al Mooney Road North

Kerrville, Texas 78028

CORPORATION

MOONEY INTERNATIONAL CORPORATION 165 Al Mooney Road North, Kerrville,

Texas 78028 tel: 830-896-6000 www.mooney.com

Page 7 of 7

MOONEY INTERNATIONAL CORPORATION

KERRVILLE, TEXAS 78028 -- FAX 830--257--4635

SERVICE (BULLETIN) (INSTRUCTION) NO.________________HAS BEEN COMPLIED

WITH ON AIRCRAFT MODEL _______________ SERIAL NUMBER ________________

Tach. Time:

Owner:

N-Number (Reg. No.)

Date of

Compliance:

Complied

By:

Form 07-0001

Inspection Report:

MOONEY INTERNATIONAL CORPORATION

ATT’N: TECHNICAL SUPPORT

165 Al Mooney Road, North

Kerrville, Texas 78028

PLACE

STAMP

HERE

SEND TO: Mooney International Corporation

165 Al Mooney Road North

Kerrville, TX 78028

FAX: (830) 257-4635 or EMAIL support@mooney.com

Figure SB M20-318-4 -- Compliance Card