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Page 1OCROpen in PDF

+ DAHER-SOCATA SOCATA Direction des Services TELEPHONE: 33 (0)5 62.41.73.00 65921 TARBES CEDEX 9 TELEFAX: 33 (0)5 62.41.76.54 FRANCE

TBM AIRCRAFT SERVICE BULLETIN SB 70-194 AMENDMENT 2 32 ATA No.

MANDATORY The technical content of this document is approved under the authority of DOA No. EASA.21J.013 is the subject of an AD ALERT

FOR LANDING GEARS ON WHICH THE BOLT HAS ALREADY BEEN REPLACED DURING APPLICATION OF ORIGINAL SB, JUST ADD A VARNISH LINE.

SUBJECT : NOSE LANDING GEAR ACTUATOR AXLE ATTACHING BOLT EFFECTIVITY: Landing gear installed on aircraft from S/N 1 to 593, which S/N is included in the list below :

PART NUMBER D23766000 or D23766000-X :

- S/N from B001 to B373 inclusive and B375,

- S/N from AR1000 to AR1023, AR1025 to AR1031 and AR1033 to AR1036 inclusive,

- S/N from AAB00000 to AAB13766 and AAB00000A to AAB13766Z inclusive,

- S/N EURXXX.

PART NUMBER 21130-000-XY or 21130-001-XY:

- All S/N REASON A. PROBLEM Breaking of the bolt attaching actuator hinge axle on nose landing gear which could cause partial disengagement of this axle and landing gear collapse.

B. REASON Installation of a bolt bearing wrong part number during general overhaul.

C. SOLUTION Addition of an operational procedure before each flight, until landing gear return to conformity through bolt replacement.

Landing gear return to conformity through bolt replacement.

REASON OF AMENDMENT 1 :

Not applicable.

REASON OF AMENDMENT 2 :

Modification of paragraphs Effectivity, Reason (C. Solution), Compliance, Warranty, Consumable Material and Accomplishment Instructions.

Addition of a varnish line identifying the application of this SB.

SEP 11 Page 1 / 8 Amdt. 2 - NOV 11

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TBM AIRCRAFT SERVICE BULLETIN SB 70-194 AMENDMENT 2 ATA No. 32

MANDATORY The technical content of this document is approved under the authority of DOA No. EASA.21J.013 is the subject of an AD

SUMMARY A. OPERATIONAL PROCEDURE B. PREPARATION C. BOLT REPLACEMENT D. RECONDITIONING COMPLIANCE:

Perform the operations in accordance with the flowchart hereunder:

BEFORE NEXT FLIGHT:

YES DOES LANDING GEAR S/N NO

BELONG TO THE LIST PROVIDED IN "EFFECTIVITY" PARAGRAPH?

NO DOES WASHER (14) YES SB DOES NOT ROTATE? CONCERN THIS

LANDING GEAR

THE FLIGHT CAN BE DONE THE FLIGHT CANNOT BE DONE BEFORE NEXT FLIGHT: YES REPLACE BOLT (3) (REFER TO DOES WASHER (14) PARAGRAPHS B., C. AND D.)

ROTATE ?

THE FLIGHT CAN BE DONE REPLACE BOLT (3) (REFER TO PARAGRAPHS B., C. AND D.)

DURING NEXT SCHEDULED

INSPECTION AND AT THE LATEST BEFORE SEPTEMBER 30, 2012 WARRANTY: Parts and manpower under warranty within the granted time limit until September 30, 2012.

The transfer of a stored landing gear to a repair station for application of SB is also taken under warranty.

SEP 11 Page 2 / 8 Amdt. 2 - NOV 11

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TBM AIRCRAFT SERVICE BULLETIN SB 70-194 AMENDMENT 2 32 ATA No.

MANDATORY The technical content of this document is approved under the authority of DOA No. EASA.21J.013 is the subject of an AD PROCURABLE MATERIAL:

- Parts to be ordered from your TBM spare parts distributor.

Item Part number Description Qty/aircraft 5101301111 Bolt AN4-11A 1 CONSUMABLE MATERIAL (Local purchase) :

- Molykote DX or Mastinox (MIL-P-8116D) or equivalent

- Sealant PR 1826 B2 ALO "LE JOINT FRANCAIS"

- M.E.K. (Methyl- Ethyl- Ketone) or equivalent

- Green protection varnish 1318B AKZO NOBEL AEROSPACE or equivalent

TOOLING

- Standard aeronautical maintenance station tools

- Torque wrench 0 to 400 Ibf.in (0 to 50 N.m)

- Castellated socket T700A3299000009 or equivalent

MANPOWER 1 aeronautical mechanic: 1 hour (Application of the SB during a scheduled inspection).

TECHNICAL INCIDENCES :

- None ACCOMPLISHMENT INSTRUCTIONS:

NOTE:

Operations required in this Service Bulletin must be accomplished by persons authorized by their Airworthiness Authorities and according to the procedure described hereafter.

A. OPERATIONAL PROCEDURE - see Figures 1, 2 and 3

CAUTION

IT IS MANDATORY TO INFORM ANY PERSON WHO MIGHT FLY THE AIRCRAFT

ABOUT THIS OPERATIONAL PROCEDURE, THIS PROCEDURE MUST BE APPLIED BEFORE NEXT FLIGHT.

1) Note the landing gear Serial Number marked on placard (16)

a) If the landing gear Serial Number is not included in the list given in paragraph Effectivity, this SB does not concern landing gear.

b) If the landing gear Serial Number is included in the list given in paragraph Effectivity, make sure that washer (14) does not rotate freely.

2) Make sure that washer (14) located on nose landing gear does not rotate freely :

a) If the washer does not rotate, the flight can be done.

b) Before each next flight, and until replacement of bolt (3), make sure washer (14) does not rotate to be able to do the flight.

c) If the washer rotates, no flight can be done until bolt (3) is replaced - see Paragraphs B., C. and D.

SEP 11 Page 3 / 8 Amdt. 2 - NOV 11

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TBM AIRCRAFT SERVICE BULLETIN SB 70-194 AMENDMENT 2 32 ATA No.

MANDATORY The technical content of this document is approved under the authority of DOA No. EASA.21J.013 is the subject of an AD

3) Insert this Service Bulletin into the Pilot's Operating Handbook.

B. PREPARATION

1) Set "SOURCE" selector to "OFF".

2) Install the warning sign prohibiting "SOURCE" selector operation

WARNING

DO NOT OPERATE

MAINTENANCE WORK IN PROGRESS

3) Jack up the aircraft - refer to Chapter 07-10-00 of the Maintenance Manual.

4) Remove nose gear R.H. door 142 - refer to Chapter 52-80-02 of the Maintenance Manual.

C. BOLT REPLACEMENT - see Figures 2 and 3

1) Unlock and remove slotted nut (11), remove and retain lockwasher (12) and washer (13).

2) Remove sealant (2) bead.

3) Remove bolt (3), washer (15), discard bolt (3).

NOTE :

If bolt is broken, take pictures and contact DAHER-SOCATA,

4) Install washer (15).

5) Apply a film of Molykote DX paste on new bolt (3) P/N 5101301111.

6) Install bolt (3).

7) Tighten to a torque between 45 and 57 Ibf.in (5 and 6.5 N.m).

8) With M.E.K., degrease the area around the bolt (3) head.

9) Apply a bead of sealant (2) PR 1826 B2 ALO all around the bolt (3) head.

10) Make sure the lockwasher (12) is in good condition, replace it if necessary.

11) Install lockwasher (12) and washer (13).

12) Install slotted nut (11). With the castellated socket P/N 1700A3299000009, tighten to a torque between 310 and 398 Ibf.in (35 and 45 N.m).

13) Secure taking care to fold an unused lug of the lockwasher (12).

14) Identify the landing gear with a green varnish line (4), minimum length 1/2 in. (13 mm) and minimum width 1/4 in. (7 mm).

SEP 11 Page 4 / 8 Amdt. 2 - NOV 11

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TBM AIRCRAFT SERVICE BULLETIN SB 70 - 194 AMENDMENT 2 32 ATA No

MANDATORY The technical content of this document is approved under the authority of DOA No. EASA.21J.013 is the subject of an AD D. RECONDITIONING - see Figure 2

1) Make sure all the tools and materials are removed and the work area is clean and free from debris.

2) Install nose gear R.H. door 142 - refer to Chapter 52-80-02 of the Maintenance Manual.

3) Lower he da ground an 3) Lower the aircraft to ground and remove the jack - refer to Chapter 07-10-00 of the

4) Remove this Service Bulletin from the Pilot's Operating Handbook.

UPDATING OF THE AIRCRAFT DOCUMENTATION:

Upon completion of Service Bulletin No. SB 70-194-32, Amendment 2, "NOSE LANDING GEAR ACTUATOR AXLE ATTACHING BOLT", make an appropriate maintenance record WARNING : SOCATA considers that it is MANDATORY for operators to comply with the instructions of this SB.

Operators who arbitrarily ignore the compliance statement indicated in this SB do so at their own risk.

SEP 11 Page 5 / 8 Amdt. 2 - NOV 11

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TBM AIRCRAFT SERVICE BULLETIN SB 70-194 AMENDMENT 2 ATA No. 32

MANDATORY The technical content of this document is approved under the authority of DOA No. EASA.21J.013 is the subject of an AD 14 - Washer Figure 1 - Operational procedure SEP 11 Page 6 / 8 Amdt. 2 - NOV 11

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TBM AIRCRAFT SERVICE BULLETIN SB 70 - 194 AMENDMENT 2 32 ATA No.

MANDATORY The technical content of this document is approved under the authority of DOA No. EASA.21J.013 is the subject of an AD 1 - Axle 2 - Sealant 3 - Bolt 4 - Varnish line 14323002AAABMA24600 Figure 2 - Removal/Installation of sealant bead SEP 11 Page 7 / 8 Amdt. 2 - NOV 11

Page 8OCROpen in PDF

TBM AIRCRAFT SERVICE BULLETIN SB 70-194 AMENDMENT 2 ATA No. 32

MANDATORY The technical content of this document is approved under the authority of DOA No. EASA.21J.013 Is the subject of an AD 1 - Axle 3 - Bolt 11 - Slotted nut 12 - Lockwasher 13 - Washer 14 - Washer 15 - Washer 16 - Placard 12

- 16 I4322101AAAJMA14600 13 Figure 3 - Bolt replacement SEP 11 Page 8 / 8 Amdt. 2 - NOV 11