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EADS SOCATA
EADS 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 TELEX : 532 835 F
TBM AIRCRAFT SERVICE BULLETIN SB 70-104 AMENDMENT 1 55 ATA No.
MANDATORY DOA EASA.21J.013 Approved SUBJECT : INSPECTION OF THE VERTICAL STABILIZER ATTACHMENT FITTINGS EFFECTIVITY : TBM 700 aircraft S/N 1 to 308, plus S/N 310.
NOTE :
From aircraft S/N 297, the modification No. MOD70-127-55 is applied at the factory.
From aircraft S/N 311, plus S/N 309, the modification No. MOD70- 129-53 is applied at the factory.
REASON A. PROBLEM Cracks on a vertical stabilizer attachment fitting.
B. REASON Corrosion on the vertical stabilizer attachment fittings.
C. SOLUTION Inspection of the fittings and bolts and protection reinforcement.
REASON OF AMENDMENT 1 :
Closing of effectivity and addition of Note.
SUMMARY A. INSPECTION OF THE FITTINGS AND BOLTS B. PROTECTION REINFORCEMENT COMPLIANCE: During the next 600-hrs scheduled inspection, then every 1200 hrs or every 2 annual inspections.
PROCURABLE MATERIAL :
- Parts to be ordered, if necessary from your TBM spare parts distributor.
Item Part number Description Qty/aircraft Z00.N7018814671 Expandable bolt (rear) 2 2 Z00.N5787461153 Cotter pin 2 Z00.N5408455080 Nut 2 4 Z00.N7743819000 Washer 2 5 Z00.N7743819002 Spring washer 4 6 200.N7018814661 Expandable bolt (front) 2 JUN 03 Page 1 / 5 Amdt. 1 - AUG 04
TBM AIRCRAFT SERVICE BULLETIN SB 70-104 AMENDMENT 1 55 ATA No
MANDATORY DOA EASA.21J.013 Approved Item Part number Description Qty/aircraft 7 Z00.N7743819003 Spring washer 4 8 Z00. N7743810100 Washer 2 9 Z00.N5408455060 Nut 2 10 Z00.N5787461151 Cotter pin 2 CONSUMABLE MATERIAL (Local purchase) :
- Stepladder 5 ft (1.50 m)
- Mastinox 6856KD (MIL-P-8116 D)
- WADIS 24 (MIL-C-16173 D grade 3) or LPS 3 (DA-4-653-40) or ARDROX 3140 (MIL-C-16173 D grade 2)
TOOLING
- Standard aeronautical maintenance station tools
- Torque wrench 0 - 90 Ibf.in (0 - 10 N.m)
MANPOWER
- 1 aeronautical mechanic : 3.50 hrs 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. INSPECTION OF THE FITTINGS AND BOLTS - see Figure 1
1) Position the stepladder at the front of the vertical stabilizer.
2) Open access panel 311 and remove the dorsal fin - refer to Chapter 55-30-00 of the Maintenance Manual.
3) Remove and discard cotter pins (2) and (10). Loosen nuts (3) and (9), but do not remove them.
4) On the L.H. side then on the R.H. side of the front fitting, perform the following operations :
a) Remove nut (9), washer (8) and spring washers (7).
b) Remove expandable bolt (6).
c) Inspect the removed parts. The parts which do not meet the criteria as below will be replaced and returned to SOCATA for analysis:
- bolt body, no corrosion mark,
- bolt head, nut, washer and spring washers, light pittings accepted.
d) Check for corrosion on the fitting.
JUN 03 Page 2 / 5 Amdt. 1 - AUG 04
TBM AIRCRAFT SERVICE BULLETIN SB 70-104 AMENDMENT 1 55 ATA No.
MANDATORY DOA EASA.21J.013 Approved
e) Apply a thin coat of Mastinox 6856KD (MIL-P-8116 D) on expandable bolt (6).
f) Install expandable bolt (6), spring washers (7), washer (8) and nut (9). Do not tighten.
5) On the L.H. side then on the R.H. side of the rear fitting, perform the following operations :
a) Remove nut (3), washer (4) and spring washers (5).
b) Remove expandable bolt (1).
c) Inspect the removed parts. The parts which do not meet the criteria as below will be replaced and returned to SOCATA for analysis:
- bolt body, no corrosion mark,
- bolt head, nut, washer and spring washers, light pittings accepted.
d) Check for corrosion on the fitting.
e) Perform a penetrant inspection on the bores of the vertical stabilizer fitting and attachments - refer to Chapter 20-50-01 of the Maintenance Manual.
f) Apply a thin coat of Mastinox 6856KD (MIL-P-8116 D) on expandable bolt (1).
g) Install expandable bolt (1), spring washers (5), washer (4) and nut (3). Do not tighten.
NOTE :
It is possible to reinstall the bolt with head directed to the exterior in order to torque the bolt easier.
6) If exfoliation corrosion is detected, transmit a report with photos or drawings to SOCATA so that a repair solution is worked out.
7) If pitting corrosion is detected, refer to Chapter 20-40-01 of the Maintenance Manual.
8) Using a torque wrench, torque nuts (3) to 62 - 71 Ibf.in (7 - 8 N.m).
9) If necessary, screw to align the notches of nuts (3) with the first pin hole and safety with a new cotter pin (2).
10) Using a torque wrench, torque nuts (9) to 53 Ibf.in (6 N.m).
11) If necessary, screw to align the notches of nuts (9) with the first pin hole and safety with a new cotter pin (10).
12) After application of this SB, please return the enclosed form to SOCATA at the indicated address.
B. PROTECTION REINFORCEMENT
1) Apply a coat of WADIS 24 (MIL-C- 16173 D grade 3) or LPS 3 (DA-4-653-40) or ARDROX 3140 (MIL-C-16173 D grade 2) on the front and rear fitting parts and on the bolts and washers.
UPDATING OF THE AIRCRAFT DOCUMENTATION:
Mention, in the aircraft log book, the application of Service Bulletin No. SB 70-104-55 "INSPECTION OF THE VERTICAL STABILIZER ATTACHMENT FITTINGS".
JUN 03 Page 3 / 5 Amdt. 1 - AUG 04
TBM AIRCRAFT SERVICE BULLETIN SB 70-104 AMENDMENT 1 55 ATA No.
MANDATORY DOA EASA.21J.013 Approved 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.
JUN 03 Page 4 / 5 Amdt. 1 - AUG 04
TBM AIRCRAFT SERVICE BULLETIN SB 70-104 AMENDMENT 1 55 ATA No.
MANDATORY DOA EASA.21J.013 Approved 1 - Expandable bolt 2 - Cotter pin 3 - Nut 4 - Washer 5 - Spring washer 6 - Expandable bolt 7 - Spring washer 8 - Washer 9 - Nut 10 - Cotter pin I4553000AAABMA4600 10 Figure 1 - Inspection of fittings and bolts JUN 03 Page 5 / 5 Amdt. 1 - AUG 04
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EADS SOCATA
FORM TO BE FILLED AFTER COMPLIANCE WITH SERVICE BULLETIN
TBM AIRCRAFT SERVICE BULLETIN SB 70 - 104 55 AMENDMENT 1 ATA No.
INSPECTION OF THE VERTICAL STABILIZER ATTACHMENT FITTINGS I, the undersigned, certity that service bulletin No. SB 70-104-55 Amendment 1 has been complied with on aircraft Front fitting Rear fitting Corrosion on fitting L.H R.H L.H. R.H.
Bolt and/or washer corrosion L.H R.H L.H R.H Crack on fitting L.H R.H L.H R.H
1. Aircraft Type Serial No. Registered Flight hours Number of landings
2. Owner Name Phone : Fax Address E-mail :
3. User (if different from owner) Name Phone : Fax Address E-mail :
4. Service center Name : Phone : Fax :
Address E-mail :
Approval No
5. Remarks DATE : SIGNED :
To be returned to SOCATA at the following address :
EADS SOCATA Direction des Services 65921 TARBES CEDEX 9 Fax : 33 (0)5 62 41 76 54 FRANCE Telex : 532 835 F
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