# 0 Sikorsky A U n i ted Techno l og i es Company Si korsky Aircraft Corporatio n 6900 Main Street P. O. B ox 9729 Stratford , Connecticut 06 6 15-9129 (203) 386 ·4000 

# S-76® HEliCOPTER 

# - AlERT SERVICE BUllETIN

N OTICE TO ALL PERSONS

**ECEIVI~** THIS OOCU\!fNT WAAJ-4·"V(;: THIS OOClJMENT. 0RANEM80DMENT OF IT l'iANY MEDIA. OISClOSf:S

**1\FOft\ fJON\'VH..CH**  ISPAOPFtETAAY,IS THE PROPERTVOFSir<. ORSI(Y AIRCRAFT OORPORATK>NANOIORU'S SU6SIOfAAIES,IS AH UM'UilUSitEOWORK PAOTECTEO USOER APPI.ICA8I.E COPYR!CtfllAWS, AN1l IS OEI.MRED ON THE ElCJ'RESS CO'<OITION THAT IT I S NOT TO BE USED, 0 SCI.DSED. REI'RODlJCfD. IN WHOlE OR IN PART ( ..O.UD M3 REPAOD\JCTIO"' AS A OERrYATM WORl<). OR USED FOR """''\JFACTURE FOR AAYOO.E OTHER THA."' S.KORSI<Y AIRCRAFT CORPOAATIC»> AA'OIOR rTS SUBS OtAA.ES W TT>IOUT rTS WRITTEN CONSENT. A.."OTHAT NO RIGHT IS GAANT£0 TO DSClOSE OR SOUSE

**AA'Y ~FORMATO'ICONTA.hEO**  HERE U, AuRJGHTSRESERVEO . AHv ACT 'NVIOLATJC:rfOF APPUCA&E LAW YAY RESULT

**NCIVI.ANO~**
**M** . .Ml

**~~TlES** ExPoRT W ARN NG: THESE COUidODITI ES, TECHN CAl. DATA OR SOF T WARE ARE SUBJECT TO THE EXPORT CO"" ROl OF EITHER 1HE INTERNA TIONAL TRAFFIC .. A RMS R EGUlATIONS ( I TAR) OR THE E XPORT Ao•.t,NISTAATION REGUlATIONS ( EAR) AN D CMNOT BE EX PORTEOW rTHOUT THE PRIOR AUTiiORIZATIONOF ElTHER THE D EP ARTMENT OF S TATE OR THE D EP ARTME "" OF COMMERC E. Tt<E tE RM " EXPORr I N

ClUDES ANY

**OISC~OSUR**
**E** AND/OR PROV ISION OF ACCESS TO COM•.IOOITIES,

**TEC II**  **NIC~** DA T A OR SOFTWARE TO OR OV FOREIGN

**NA TION~$**  (WHE TH ER

**~OCATE D**  I N TH E UNITED S T ATES OR AORO AO) . T HI S REOU REMENT

**~SO AP~I**  **S** TO f OR E IG N

**NATI NA**  **~ ~OV**  **ES** OF U . S . C0MPAN ES

**A~ O**  THE IR F OREIGN SUBSI O IARJES. S · 76° 1S A REG I STE RED TRADEMARK OF S IK O R S KY AIRCRAFT CORPORAT ION . ASB 76-66-50 Basic Issue • January 14 / 13 SUBJECT: POWERTRAIN - Main Gear Box- O n e Time I nspection of Main Gear Box (MGB) Lower Housing Section 1 . PLANNING INFORMAT ION A . Effectivity

B. Purpose

ONE-TIME INSPECTION 

# [ All S-76A, B l and C model helicopters with the following MGB . Component: MGB Series : 76351-09000 series, 76351-09500 se ries, and 76351 - 09600 series, modified by Overhau l Repair I nstruction (OR I ) numbers ; 76350-065 , TS -065-11 1TS-065-IIA , TS-065-2, or TS-065- 2A . To determine i f MGB lower housing has been modified by Overhaul Repair Instruction (OR I) number(s) listed above. If any of these ORI number(s) are present , perform Alert Service Bu ll etin (ASB) . If none of these OR I number are present, no further action is required . Background: Investigations for loss of MGB oil pressure during flight revealed that the ORI repair procedure for the MGB lower housing jet bore(s) was not properly implemented.

ATA 66-10-00 

# l Page 1 of 18

## S-16 AlERT 

## SERVICE BUllETIN ASB 76-66-50 Basic Issue • January 14/13 Section 1 . PLANNING INFORMATION (Continued) C . Description The MGB lower housing is accessed and a visual inspection is performed usi ng a flashlight and mirror to determine if ORI numbers listed in Effectivity section of this ASB was performed on the MGB lower housing . If the lower housing is found to have been repaired by ORI numbers listed in Effectivity section an inspection is required on all ten (1 0) lower housing jet bores for leaks , paint or caulk blistering , and l iner protrusion. If any of these conditions are found, no further flight is allowed until the repair(s) is completed . D . Compliance Compliance is essential. The one-time inspection outlined herein shall be accomplished by March 31 , 2013 . E . Approval Inspection Item . F . Manpower ( Estimated ) Task N o. of M e n No . of Ho u rs Man -H ou rs* Inspect Jet Bore for Oil Leakage 0 .2 0 .2 I nspect Jet Bore for Bubb ling/Blistering of Caulk and Paint Inspect Liner for Protrusion/Movement Leak Check Total Man - Hours 

### 1 1 

### 1 0.2 0.2 0 .2 0.2 0.5 0.5 1 . 1 1 . 1 * Esti mate does not include time requi red to prepa re helicopte r o r retu rn it to flight statu s.

Q!y 1 

### 1 1 G . Material None . H . Tooling Nomenclatu re Plastic Scraper I nspec t ion m i rror Flash Light (1) Procure from local supply I. Weight and Balance Not affected . J . Electrical Load Data Not affected . Page 2 P art No . Sou rce Commercially Available or equivalent (1) Com mercia lly Ava il ab le or eq uival ent (1 ) Commercially Available or equivalent (1) 

# [ ATA 66-10-00 

# l ONE-T I ME INSPECTION

### ASB 76-66-50 Basic Issue • January 14 / 13 

## S-16 AliRT SERVICE BUllETIN Section 1 . PLANNING INFORMATION (Continued) K. Software Load Data None. L. 

### References None . M . Publications Affe cted ( 1) S-76A Model Helicopters: (a) Temporary Revision No . 5-189 against Airworthiness Limitations and Inspection Requirements Manual , SA 4047-76-2- 1 , Chapter /Section 5 -20-00 , Before First Flight of the Day Inspection Checklist, is issued concu rren tly with this ASB. (b) Temporary Revi s ion No. 66-49 against Maintenance Manual , SA 4047-76-2, Chapter/Section 66-10-00, Main Gear Box - Inspection/Check , Before First Flight of the Day Inspection of the MGB Lower Housing Jet Bores, is issued concurrently with this ASB . (2) S-76B Model Helicopters : (a) Temporary Revision No. 5 - 166 against Airworthiness Limitations and Inspection Requ irements Manu al , SA 4047-76B-2 - 1, Chapte r/Section 5-20-00 , Before First Fl ight of the Day Inspection Checklist , is issued concurrently with this ASB . (b) Temporary Revision No . 66-23 against Maintenance Manual , SA 4047-76B -2 , Chapter /Section 66-10-00 , Main Gear Box- Inspection/Check , Before First Flight of the Day I nspection of the MGB Lower Housing Jet Bores , is issued concurrently with this ASB. (3) S-76C Model Helicopters: (a) Temporary Revision No . 5-169 against Airworthiness Limitations and Inspection Requ i rements Manual , SA 4047-76C-2 - 1 , Chapter /Section 5 -20-00 , Before First Flight of the Day Inspection Checklist, is issued concurrently with this ASB . (b) Temporary Revision No . 66-26 against Maintenance Manual, SA 4047C-76-2, Chapter/Section 66 - 10-00, Main Gear Box- Inspection/Check , Before First Flight of the Day Inspection of the MGB Lower Housing Jet Bores , is issued concurrently with this ASB . N. Attachment None.

ONE -TIME INSPECTION 

# [ ATA 

# J 66 - 10-00 Page 3

## S - 76 AlERT SERVICE BUllETIN ASB 76-66-50 Basic Issue • Janua ry 14/13 Section 2 . MATERIAL INFORMATION 

### A. Basis for Material Data Per helicopter . B . Bill of Material None . C . Consumable Material

Qty As Req 'd
As Req 'd As Req'd As Req'd
As Req 'd As Req'd As Req 'd

Page 4 

## WARNING 

# I

Nomenclature Acetone OBSERVE ALL CAUTIONS AND WARNINGS ON CONTAINERS WHEN USING CO NSUMABL E$. WHEN APPLICABLE, WEAR NECESSARY PROTECTIVE GEAR DURING HANDLING AND USE . IF A CONSUMABLE IS FLAMMABLE OR EXPLOSIVE , MAKE CERTAIN CONSUMABLE AND ITS VAPORS ARE KEPT AWAY FROM HEAT, SPARK AND FLAME. MAK E CERTAIN FIREFIG HTIN G EQUIP MENT IS READILY AVAILABLE PRIOR TO USE . FOR ADDITIONAL INFORMA TI ON ON TOXICITY, FLASHPOINT AND FLAMMAB ILITY OF CHEMICALS , CONSULT YOUR MEDICAL PEOPLE OR THE MANUFACTURER OF THE CONSUMABLE. Part No. Source ASTM D329 ( 1) Ethyl Alcohol Dry-Cleaning Solvent (Alternate) A-A-53880 (Alternate) MIL-PRF-680, Type II or (1) (2) Caulk Clear Epoxy Clear Polyurethane Cotton Cheesecloth Crocus Cloth Low-Lint cleaning Cloth Dow 19 Epoxy Primer Epoxy Primer Gear box O i l Gea r box Oil Gea r box Oil Gear box Oil equivalent AMS 3265 , C lass B (1) MIL-PRF-22750 (1) (Alternate) M I L-PRF-85285 or ( 1) equivalent CCC-C-440 ( 1) (Alternate) A-A-1206 (1) {Alternate) A-A-59323, Type II or (1) equivalent MIL-M-3171 Type V I or equivalent (3) MIL-P-23377 (1) (Alternate) M I L- PRF-85582 or (1) equivalent DOD-PRF-85734 (1) (Altern ate) MIL-L-23699 or equivalent { 1) (Altern ate) MIL-L-2 1260 Type I or equivalent {Alternate) Grade 30 or equ iva lent [ ATA 

# J

**66-10-0~** {1) (1) ONE-TIME INSPECT IONASB 76-66-50 

## S-l& AlERT SERVICE BUllETIN Basic Issue • January 14 / 13 Qty Nomenclature Part No . Source Gear box Oil (Alternate ) Dexron Ill , ATF (1) As Req 'd Matching Paint (epoxy coating) MIL-PRF-22750 (1) As Req 'd As Req ' d Paint Stripper TT-R-248 or equivalent Paint Stripper (Alternate) MIL-R-81294 or equivalent Polyurethane Paint MI L-PRF-85285, Color 17178 ( 1) Procure through local supply. (2) Manufactured by Safety-Kieen Systems, Inc . 5400 Legacy Drive Cluster II, Building 3 Plano , Texas 75024 USA 1 -800-669-5740 website: www.Safety-Kieen .com (3) Manufactured by DGR Industrial Products , Inc . 4435 North First Street, Suite #184 Livermore , California 94551 , Phone: (408) 221 -71 22 , website: www .chemicalsupermarket.com ( 1) ( 1) (1)

Section 3. ACCOMPLISHMENT I N STRUCT IONS A . Prepare helicopter for in spection: (1) Turn off all helicopter electrical and hydraulic power. (2) Engage rotor brake. B . Perform one-time inspection to determine if the MGB lower housing was repaired per ORI numbers listed in Effectivity section of this ASB , and record data (afte r inspection is completed) via MGB Lower Housing Jet Bore Data Sheet: (Refe r to Section H) . NOTE : The ORI number is marked with prefix 'TS-065 '. N OTE : If MGB lower housing has been repaired per any OR I numbers l isted in Effectivity section of this ASB , a recurring before first flight of the day inspection will be implemented. Refer to Temporary Revisions listed in the Publications Affected Section of this ASB , to perform Before First Flight of the Day Inspection of MGB Lower Housing Jet Bores . (1) Using a flashlight and mirror, inspect nameplate area for part markings on the lower housing , center top, next to Accessory Drive pad. Refer to Figures 1 and 2. (a) If the ORI numbers cannot be read , remove paint on part marking boss only, See Figure 2 . (b) Thoroughly clean area with Acetone per ASTM 0329 , Ethyl Alcohol per AA-53880 or dry-cleaning solvent per MIL-PRF-680 Type II and Crocus C loth per A-A-1206, Cotton Cheesecloth per CCC-C-440 or Low-Lint Cleaning Cloth per A-A-59323 , Type II. (2) If part markings match any of the ORI numbers listed in Effectivity section of this ASB , proceed to step (3). If part markings do not match any of the ORI n umbers listed in Effectivity section of this ASB , no further action is required . Proceed to Section E. ONE -TIME ( INS PECTION '---' ATA 

# J 66-10-00 Page 5

## S-76 AlERT SERVICE BUllETIN ASB 76-66-50 Basic Issue • January 14 /13 Section 3. ACCOMPLISHMENT INSTRUCTIONS (Continued) (3) Visually inspect all ten MGB lower housing jet bores and record data via MGB Lower Housing Jet Bore Data Sheet. Refer to Figures 3 and 4 for jet bore locations for the following inspections :

(a) Perform a visual inspection of each jet bore for any sign of the liner protrusion and/or movement. Refer to Figures 5 and 6. If a jet bore liner appears to be backed out by any amount , remove gear box . No further flight allowed unti l a replacement gear box is installed . (b) Perform a visua l inspection for signs of oil leakage from the jet bore . If a leak is present perform Section C . No further flight allowed until Section C . is performed . (c) Perform a visual inspection for any sign of bubbling or blistering of paint and/or caulking around jet bores . (Refe r to Figure 8) . If the paint and/or caulk is bubbling , blistering or cracked, perform Section C. No further flight allowed until Section C . is performed. (d) If the anomalies above are not found and paint was removed from the part marking area of the lower housing , proceed to Section F. If no paint was removed, proceed to Section G . C . Inspect jet bore for evidence of ORI 76350-065 liner repair as follows:

Page 6 (1) Remove paint and caulking on and around jet bore with pl astic scraper. (2) Inspect for liner protrusion beyond end face of lower housing surface . (a) If there is any indication of liner protrusion , replace gear box. (Refer to Figure 6). (b) If the liner is not protruding , continue with inspection . (Refer to Figure 5). (3) Inspect liner parting line on end face. (Refer to Figure 5) . (a) If oil is leaking between the ORI repaired liner and the housing , replace gear box . (b) If oil is not leaking between the ORI repaired liner and the housing , continue with inspection. TAKE PRECAUTIONARY MEASURES NOT TO INTRODUCE ANY FOREIGN OBJECTS INTO THE MGB ASSEMBLY . (4) Remove snap ring and jet from housing. Discard packing . (5) Utilizing a film of gear box oil , install new packing on jet and install jet into housing . Refer to Figure 7 for proper packing size and location . (6) Perform a m i nimum of a 30 minute leakage check as follows: 

# [ ATA ] 

### 66-10-00 ONE-TIME INSPECTION

### ASB 76-66-50 Basic Issue • January 14/13 

## S - 76 AlERT SERVICE BUllETIN Section 3 . ACCOMPLISHMENT INSTRUCTIONS (Continued) (a) Perform a Ground Run as follows : 1 . Operate the main rotor at 1 07% Nr flat pitch until indications are stable for models S-76B and later. Operate the main rotor at 1 00% Nr flat pitch until indications are stable for S-76A models. 2 . Ground run the MGB until all fluids have reached normal operating temperatures and then run for a minimum of 30 minutes. 3 . Shutdown and perform a leak check per step (6)(b) prior to return to service . (b) V is ually inspe ct jet bores for visible moisture or droplets . 1 . If leakage occurs, recheck packing installation, repeat steps (4) and (5). If packing was not damaged during installation, remove and replace gear box. If the new packing was damaged during installation , remove and replace with new packing and repeat steps (4) through (6). If any moisture or droplets of MGB oil are visible , MGB has failed leak check . No further flight is allowed until MGB is replaced . 2 . If no moisture or droplets of gear box oil is visible , MGB has passed leak check . (7) If the gear box passes the leak check, touch up inspected areas as follows: (a) Clean surface completely with Acetone per ASTM 0329 , or Ethyl Alcohol per AA-53880 , or equivalent. (b) Apply a bead of caulk (AMS 3265 Class B) to all exposed interfaces . (c) Apply two (2) coats of epoxy primer (MIL-P-23377 or alternate MIL-PRF-85582 or equivalent) . (d) Apply two (2) coats of touch up paint (M I L-PRF 85285 Color No . 17178 or equivalent) . (e) Apply two (2) coats of clear epoxy (MIL-PRF-22750 or alternate MIL-PRF-85285 or equivalent) . D . Any MGB lower housings that are sent for overhaul or repair that are marked with ORI part numbers listed in Effectivity section of this ASB , are to be repaired to ORI 76350-065 revision B or later, regardless of the condition of repair. Re-identify lower housing per the new ORI revision that was completed and obliterate old ORI 76350-065 part markings . E . If no paint was removed from the part marking area of the lower housing , proceed to Section G. F. If paint was removed from the part marking area of the lower housing , perform the following:

ATA ] 

### 66-10 -00 Page 7 ONE-T I ME [ INSPECTION 

# ----

## S-16 

## ALERT SERVICE BUllETIN ASB 76-66-50 Basic Issue • January 14/13 Section 3 . ACCOMPLISHMENT INSTRUCTIONS (Continued) (1) Thoroughly clean area with Paint Stripper TT-R-248 or MIL-R-81294 , Acetone per ASTM D329 , Ethyl Alcohol per A-A-53880 or dry-cleaning solvent per MIL-PRF-680 Type II and Crocus Cloth per A-A- 1206, Cotton Cheesecloth per CCC-C-440 or Low-Lint Cleaning Cloth per A-A-59323 , Type II. NOTE: DOW 19 is to be applied per MIL-M-3171 Type VI. Refer to Material Information section of this ASB . (2) Apply DOW 19 coating (or equivalent) with brush to any bare magnesium surfaces to produce a brassy finish . (3) Apply two (2) coats of epoxy primer (MIL-P-23377 or alternate MIL-PRF-85582 or equivalent) . (4) Apply two (2) coats of touch up paint (MIL-PRF-85285 Color No. 17178 or equivalent). (5) Apply two (2) coats of clear epoxy (MIL-PRF-22750 or alternate MIL-PRF-85285 or equivalent) . (6) Proceed to Section G . G . Helicopter is returned to service .

Page 8 [ ATA 

# J ?6-10-00 ONE-TIME IN SPECTIONASB 76-66-50 Basic Iss ue • January 14/13 Section 

### 3 . ACCOMPLISHMENT INSTRUCTIONS (Continued) H . MGB Lower H ousin g Jet Bore Data Sheet. 

## S - 76 ALERT SERVICE BUllETIN
(1) Send this MGB Lower Housing Jet Bore Data Sheet, comp leted, via emai l to: GPSIKSASProductSafet@utc .com or facsimi l e to : (860) 998-7565 . (2) Record the following information for each helicopter: Customer/Operator Name: -------- --- -- ---------- Helicopter Serial Number: ------------------------ Helicopter Total Time Since New: --- --- --- --- --- - - -- -- Time Since Last Overhaul: -- -- -------------------- MGB Part Number: --- ---- -- ---- --- ----- - ---- MGB Se rial Number : --- --- -- --------- - ------- Lower Housing Part Number : --- --- ----- - ----- - ----- Lower Housing ORI Part Number (TS -06 5-XX) : ----------- - ----- Lower Housing Serial Number: --- - - -- -- - - -- -- - - -- --- Any Sign of Liner Protrusion and/or Movement? YES ------ NO

_____ _ Signs of Oil Leakage from any Jet Bore? YES
_____ _ _ NO

_ _ _ ____ _ Signs of Bubbling or Blistering Paint and/or Caulking around any Jet Bores? YES

_ _ NO __ Date Inspection i s Performed: ---- - ------ - ----- - ----

ONE -T I ME I NSPECTION 

# [ ATA 

# J 66-10-00 Page 9

## S - 76 AURT SERVICE BUllETIN Secti on 3 . ACCO MPLISHMENT INSTRUCT IONS (Cont inued)

PART MARKING



### Page 10 PART MARKING (SEE FI GURE 2)

JET LOCATION R . H.SHOWN L.H . OPPOSIT E (REF)


### PART MARKING BOSS LOCAT ION FIGURE 1



# [ ASB 76-66 -50 Basi c Issue • Ja nuary 14/ 1 3

ACCESSORY DRIVE PAD VI EW A-A

ATA ) 

### 66-10-00 TD2975 

# ..

ONE-TIME INSPECTION

### ASS 76-66-50 Basic Issue • January 14/13 Section 3 . ACCOMPLISHMENT INSTRUCTIONS (Continued)

ONE-TIME [ INSPECTION '-----' REMOVE PA I NT IN THIS AREA TO F I ND PART MARKING



### PART MARKING AREA ON LOWER HOUSING FIGURE 2

ATA ] 

### 66-10-00 

## S-16 AURT SERVICE 

## BUllETIN

T D2976 

# ...

Page 11

## S-16 

## AlERT SERVICE BULLETIN Section 3 . ACCOMPLISHMENT INSTRUCTIONS (Continued)

GENERATOR GEAR JET BORE

FREE WHEEL UNIT (FWD) ROLLER BRG JET BORE SPUR GEAR JET BORE 

### ASS 76-66-50 Basic Issue • January 14/13

BEVEL GEAR JET BORE

TD2977



### Page 12 JET BORE LOCATIONS , RIGHT SIDE (LH SIDE IS OPPOSITE OF WHAT IS SHOWN) FIGURE 3



# [ ATA ) 

### 66-10-00 ONE-TIME INSPECTION 

# ..

### ASS 76-66-50 Basic Issue • January 14/ 13 Section 3 . ACCOMPLISHMENT INSTRUCTIONS (Continued)

ONE-TIME INSPECTION 

### LEFT



# [ GENERATOR GEAR JET
SPUR GEAR JET
BEVEL GEAR JET
FREE WHEEL UNIT JET FREEWHEEL UNIT(FWO) ROLLER BRG JET SPUR GEAR JET
BEVEL GEAR JET

FREEWHEEL UNIT(FWO) ROLLER BRG JET 

## ----iii== LOCATIONS OF JET BORES , BOTH SIDES FIGURE 4

ATA ] 

### 66-10-00 

## S-76 AURT SERVICE 

## BUlLETIN

RIGHT TD2978 

# ...

Page 13

## S-16 

## AlERT SERVICE BUllETIN Section 

### 3 . ACCOMPLISHMENT IN STR UCTIONS (Continued)

Page 

### 14 LOWER HOUSING OIL JET

OIL JET C ROSS SECTIONAL VIEW JET BORE LINER FIGURE 

### 5 ASS 76 -66-50 Basic Issue • January 

### 14 /13

THE PARTING LINE I S THE INTERFACE BETWEEN THE LINER AND THE HOUSING

JET BORE LINER INSTALL ED CORRECTLY: FLUSH TO 0 .0 1 0 IN . BELOW H OUS I NG



# [ ATA 

# J 66- 10-0 0 TD2979 $A

ONE-TIME IN SP ECTION

### ASS 76-66-50 Basic Issue • January 14/ 13 Section 3. ACCOMPLISHMENT INSTRUCTIONS (Continued)

ONE -T IME INSPECTION 

# [ LOWER HOUSING

OIL JET CROSS SECTIONA L VIEW 

### EXAMPLE OF A JET BORE LINER BACKED OUT FIGURE 6

ATA ] 

### 66-10-00 

## S-76 AURT SERVICE BUllETIN

JET BORE L INER PROTRUSION

TD2980 

## "'

Page 15

## S-76 ALERT SERVICE BUlLETIN ASS 76-66-50 Basic Issu e · J anuary 14/13 Section 3 .

Page 16 ACCOMPLISHMENT INSTRUCTIONS (Continu ed) OUTBOARD PACKING (LARGER DIAMETER)

LOCATION INBOARD PACKING OUTBOARD PACKING (SEE FIGURE 4) (SMALLER DIAMETER) (LARGER DIAMETER) GENERA TOR GEAR M83248 / 1-o13 M83248 / 1-016 SPU R GEAR M83248 / 1-133 M83248 / 1-22& BEVEL GEAR M83248 / 1-137 M83248 / 1-232 FREE WHEEL UNIT (FWU) JET M83248 / 1-011 M83248 /1 -016 FREE WHEEL UNIT (FWU) M83248 / 1-o14 M83248 / 1-016 ROUE R BRG JET 

### PACKING LOCATIONS ON TYPICAL JET BORE FIGURE 7



# [ ATA 

### 66-10-00 

# l ONE -TIME INSPECTION

### ASB 76-66-50 Basic Issue • January 14/ 13 Section 3. ACCOMPLISHMENT I NSTRU CT IONS (Conti nued)

ON E-TIME IN SP E CTION [ ATA 

# J 66-10-00 OIL JET CROSS SECTION VIEW 

### INSPECTION AREA FIGURE 8 

## S-76 ALERT SERVICE BUllETIN

IN SPECTlON AREA FOR BUBBUNG OR BUSTERING OF PAINT I CA ULKIN G

T02989 

### ....

Pag e 17

## S-76 AlERT SERVICE BUllETIN ASB 76-66-50 Basic Issue • January 14 / 13 Section 3 . ACCOMPLISHMENT INSTRUCTIONS (Continued) I. Record of compliance :

Page 18 (1) Make helicopter logbook entries to show compliance with this ASB as follows: (a) Make hel icopter leve l logbook entry on form SA7343-15 . (b) When ASB modifies a component that can be removed from this helicopter: 1 . Make component log card entries on forms SA7343-22 

### & SA7343-21 as applicable . 2. If a component modified by this ASB does not have a log card and the ASB does not create one , then annotate compliance on the next higher assembly that the component belongs to which does have a log card. NOTE : If access to www .Sikorsky360 .com is unavailable , complete attached ALERT SERV ICE BULLET I N COMPLIANCE RECORD CARD and return it to Sikorsky Aircraft Corporation. (2) Make an appropriate electronic compliance entry in the E-Notification section at www.Sikorsky360 .com . Refer to User Guide located on the www.Sikorsky360 .com/ ENotification Search page .



# [ ATA ] 66-10-00 ONE-TIME INSPECTION