# t: DAHE R-SOCATA
SOCATA Direction des Servi ces 65921 TARBES CEDEX 9 FRANC E TELEP HON E : 33 (0)5 62.41 .7 3 . 00 TELE F AX: 33 (0 ) 5 62.41.76.54 

## RAL LYE A I RCRAFT 

# SERVICE BULLETI N 

# I S B 1 5 0 3 2 REVI S I ON 3 AT A N o .

SUB J ECT EFFECTI VI TY

PURPOSE 

## MAN DATO RY T he t echnica l content of th i s doc u ment is a pproved under t he author ity of DOA No. EASA.21 J .013 is the s u bj ect o f an AD NOSE LAND I NG GEAR - WHEEL AX LE All MS880B, MS880B - D , MS881, MS883 , MS884, MS885, MS886, MS887, MS890A, MS890B, MS892A 1 50, MS892B150 , MS892E150, MS892 E -D 1 50, MS893A , MS893B, MS893E , MS893E - D , MS894A, MS894E, Rallye 100S , Rallye 100S - D, Ra ll ye 100ST, Ra ll ye 1 OOST-D, Rallye 1 1 OST, Rallye 150ST, Rallye 150ST - D, Ra ll ye 150T, Rallye 1 50T-D, Ra ll ye 150SV, Rallye 150SVS, Rallye 180T , Rallye 180TS, Rallye 1 80T - D, Rallye 235A, Rallye 235F, Rallye 235E , Ra llye 235E-D airplan es. Reduce possibi lity of a nose gear whee l ax le fatigue failure . 

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P U R POSE OF REVISIO N 

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- To reduce i nspection interva l from 500 ho u rs to 200 hours.

- To add an inspecti on between axle rad ius and nose lan d ing gear fork

- To add Item 7 on the Fi gure 1

- To take into accou nt second - hand nose landing gears and secon d- hand w h ee l ax les . APP LI CATI O N:

- Rep lacement of nose landing gear or whee l axle w ith a second-hand part : apply operat ion 7) of Paragraph DESCRI P TION OF ACCOMPLISHMENT INSTRUCTI ONS an d r ep l ace t h e 4 attach ing screws (2) before the f irst fligh t.

- W ithin th e next 50 hours after t h is SB issue, t hen every 200 h ours ap p ly the instr uct io n s describ ed in Pa rag r aph DESCRIPTION OF ACCOMPLISHMENT I NSTRUCTIONS .

- Every 2000 hours appl y the instruct ions descri bed in Paragrap h DESCRIPT ION O F ACCOMPLISHME NT I NSTRUCTI ONS and replace the 4 attachi n g screws (2) . DESCR I PTI ON OF ACCO M P LI SH M ENT INSTRUCTI O N S :

JUN 9 1 Rev. 3- SEP 15 NOTE: Operations required in this Service Bulletin must be accomplished bypersons author i zed by their Airworthiness Authorit ies and according to the procedure described hereafter. 1 ) Install the airp l ane o n jacks . 2) Re m ove the nose gear wheel f ai ring 

### (if insta ll ed) . 3) Re m ove the nose g ear wheel. 4) Re m ove t h e nose gear wheel axl e (3), ret ain the 4 attaching screws (2) , the 4 washers (4) and (if installed) th e thickness washer ( 1) ; d i scard the lockn uts (5) . 5 ) Clean the w h eel and t he axle . 6 ) Perform a detailed visua l i nspection of the i ntersection betwee n the ax le radi u s and nose lan d ing gear fork [area 1 (7) ] to look f o r ev i dence of chafi ng be tween t h e wheel bearing race and axl e su rface. If necessary, replace nose gea r w h eel axle (3) . Page 1 

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## RALLYE AIRCRAFT 

# I I SERVICE BULLETIN SB 150 REV I S ION3 

## MANDATORY The technical content of this document is approved under the authority of DOA No. EASA.21J.013 is the subject of an AD 7) Detect cracks on nose wheel axle by dye penetrant inspection, check for absence of distortion and nicks or wear ; change the axle if necessary. 8) Check the 4 attaching screws for condition, check for absence of distortion, scratches and nicks or wear ; change the screws 

### if necessary. NOTE: Every 2000 hours, replace the 4 attaching screws (2) PIN ZOO.N5101231508 with new ones. 

### 9) Coat l i ghtly the axle contacts and the wheel bearings with AIR 421 OB (MIL.G.23827A) grease. CAUTION

THE NEW WHEEL AXLE PI N 895.42.0.027.0 SUPPUED AS SPARES WILL BE MANDATORILY INSTALLED WITH THE THICKNESS WASHER (1) 1

### 0) Attach the nose gear wheel axle (3) on the landing gear (6) with 4 attaching screws (2) P I N ZOO.N5101231508, 4 washers (4), PI N ZOO.N5701039365 and (if installed), the thickne ss washer (1) and 

### 4 new locknuts (5) PIN ZOO.N5401458376. 11) Install the nose gear wheel. 12) Install the nose gea r wheel fairing 

### (if necessary). 13) Check nose gear wheel for free rotation. 14) Set the airplane on its wheels again. NOTE: Refer t o the Spares Catalog corresponding to your airplane for PIN of the parts to be replaced. UPDATING OF THE AIRCRAFT DOCUMENTATION : WARNING



### JUN 91 Rev. 3- SEP 15 Upon completion of Service Bulletin No . SB 150-32, Revision 3 "NOSE LANDING GEAR - WHEEL AXLE", make an appropriate maintenance record entry. SOCATA cons iders that it is MANDATORY for operators to comply with the instructions of this SB. Operators who arbitrarily ig nore the compliance statement ind i cated in this SB do so at their own risk.

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# I RALLYE AIRCRAFT 

# I SERVICE BULLETIN SB 150 32 REVI SIO N 3 ATA No. 

# MANDATORY

5

JUN 91 Rev. 

### 3- SEP 15 The technical content of this document is approved under the authority of DOA No. EASA.21J.013



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I I I I I I I I I I I I I I I I 2

Figure 1 - Wheel axle is the subject of an AD 1 - Thickness washer 2- Attaching screw 3- Nose gear wheel axle 

### 4- Washer 

### 5- Locknut 

### 6- Landing gear 

### 7- Area 1

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