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Page 1 / 8JUN03 Rev. 4 --- DEC 18 This document is the property of DAHER AEROSPACE. Reproduction prohibited without prior DAHER AEROSPACE agreement
CAUTION
SCHEDULED APPLICATION OF THIS SERVICE BULLETIN CAN BE STOPPED BY SB70--255--55 TERMINATIVE APPLICATION.
SUBJECT : INSPECTIONOFTHE VERTICALSTABILIZER ATTACHMENT FITTING S EFFECTIVITY : TBM 700 aircraft S/N1 to308, plusS/N310 which have not applied SB70---255---55.
NOTE :
From aircraft S/N 297, the modification No. MOD70---127---55 is applied at the factory.
From aircraft S/N311, plus S/N309, themodification No. MOD70---129---53 is applied at the factory.
REASON :
A. PROBLEM Cracks on a verticalstabilizer attachment fitting.
B. REASON Corrosion on the verticalstabilizer attachment fittings.
C. SOLUTION Inspection of the fittings and boltsand protection reinforcement.
PURPOSE OF THE REVISION 1 :
Closing of effectivityand addition ofNote.
PURPOSE OF THE REVISION 2 :
AdditionofnewPartNumbersforexpandableboltsandofasso ciatedprocedurerelatedto Modification No. MOD 70---0205---55.
Addition of the possibilitytouse anequivalent process forcrack detection.
PURPOSE OF THE REVISION 3 :
Use of an endoscope toinspect thefittings.
Modification of the NOTE due tothefact that SB was not taken intoaccount in Chapter05 of the Maintenance Manualat the Revision dated JUL07.
PURPOSE OF THE REVISION 4 :
Tomodifylogo.
Topropose SB70---255---55 application as a terminative solution.
To replace expandable bolts assy (rear and front) on each installation in accordance with Maintenance Manual.
SERVICE BULLETIN
TBM AIRCRAFT
MANDATORY The technicalcontent ofthis document is approved under the authorityofDOA No. EASA.21J.013 is the subject ofan AD SB 70--104 REVISION 4 55 ATANo.
DAHER AEROSPACE Direction des Services TELEPHONE:33(0)562.41.73.00 65921TARBESCEDEX9 tbmcare@daher.com FRANCE
SERVICE BULLETIN
TBM AIRCRAFT
MANDATORY The technicalcontent ofthis document is approved under the authorityofDOA No. EASA.21J.013 is the subject ofan AD SB 70--104 REVISION 4 55 ATANo.
Page 2 / 8JUN03 Rev. 4 --- DEC 18 This document is the property of DAHER AEROSPACE. Reproduction prohibited without prior DAHER AEROSPACE agreement SUMMARY :
A. INSPECTIONOFTHE FITTINGSAND BOLTS B. PROTECTIONREINFORCEMENT APPLICATION : During the next 600---hrs scheduled inspection, then every 1200 hrs or every 2 annual inspections.
PROCURABLE MATERIAL :
--- Parts tobe ordered from your TBM spare parts distributor.
Item Part number Description Qty/aircraft 1 Pre---MOD70---0205---55 7018814671 After stock depletion, replaced by Expandablebolt assy(rear) 2 Post---MOD 70---0205---55 7022810298 6 Pre---MOD70---0205---55 7018814661 After stock depletion, replaced by Expandablebolt assy(front) 2 Post---MOD70---0205---55 7022810299 After stock depletion, replaced by NOTE :
The difference between Pre---MOD 70---0205---55 and Post---MOD 70---0205---55 bolts is identified on details A and B of Figure 1.
CONSUMABLE MATERIAL or OTHER PRODUCTS (Localpurchase):
--- Stepladder 5 ft (1.50 m) --- Mastinox6856KD (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) TOOLS :
--- Standard aeronauticalmaintenance station tools --- Torque wrench 0 --- 90 lbf.in (0 --- 10 N.m) --- Endoscope MANPOWER :
--- 1 aeronauticalmechanic :3.50 hrs
SERVICE BULLETIN
TBM AIRCRAFT
MANDATORY The technicalcontent ofthis document is approved under the authorityofDOA No. EASA.21J.013 is the subject ofan AD SB 70--104 REVISION 4 55 ATANo.
Page 3 / 8JUN03 Rev. 4 --- DEC 18 This document is the property of DAHER AEROSPACE. Reproduction prohibited without prior DAHER AEROSPACE agreement TECHNICAL INCIDENCES :
--- None DESCRIPTION OF ACCOMPLISHMENT INSTRUCTIONS :
NOTE :
Operations required in this ServiceBulletin must beaccomplished bypersons authorizedby their Airworthiness Authorities and according to the procedure described hereafter.
A. INSPECTIONOFTHE FITTINGSAND BOLTS --- see Figures 1, 2 and 3
1) Position the stepladder at thefront ofthe verticalstabilizer.
2) Openaccesspanel311andremovethedorsalfin --- referto Chapter 55---30---00of 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 :
Pre---MOD 70---0205---55 --- see Figure 1, DetailA
a) Remove nut and discard (9), washer (8)and spring washers (7).
b) Remove and discard expandable bolt (6).
Post---MOD 70---0205---55 --- see Figure 1, DetailB
a) Remove and discard nut(9), washer (8).
b) Remove and discard expandable bolt (6).
All
CAUTION MIXING BETWEEN BOLTS INSTALLED ON L.H. OR R.H. SIDE IS PROHIBITED.
MIXING BETWEEN BOLTS INSTALLED AT THE FRONT OR AT THE REAR IS
PERMITTED
c) With an endoscope, check for corrosion on the fitting.
d) Apply a thin coat of Mastinox 6856KD (MIL---P---8116 D) onnew expandable bolt (6).
Pre---MOD 70---0205---55 --- see Figure 1, DetailA
e) IncompliancewithFigure2,installnewexpandablebolt( 6),springwashers(7), washer (8)and nut (9). Donot tighten.
Post---MOD 70---0205---55 --- see Figure 1, DetailB
e) IncompliancewithFigure3,installnewexpandablebolt( 6),washer(8)andnut
(9). Donot tighten.
5) On the L.H. side then on the R.H. side of the rear fitting, perform the following operations :
SERVICE BULLETIN
TBM AIRCRAFT
MANDATORY The technicalcontent ofthis document is approved under the authorityofDOA No. EASA.21J.013 is the subject ofan AD SB 70--104 REVISION 4 55 ATANo.
Page 4 / 8JUN03 Rev. 4 --- DEC 18 This document is the property of DAHER AEROSPACE. Reproduction prohibited without prior DAHER AEROSPACE agreement Pre---MOD 70---0205---55 --- see Figure 1, DetailA
a) Remove and discard nut (3), washer (4)and spring washers (5).
b) Remove and discard expandablebolt (1).
Post---MOD 70---0205---55 --- see Figure 1, DetailB
a) Remove and discard nut (3)and washer (4).
b) Remove and discard expandablebolt (1).
All
c) With an endoscope, check for corrosion on the fitting.
d) Performacrackdetectionbypenetrantinspection --- ref ertoChapter20---50---01 oftheMaintenanceManual,oranyotherequivalentprocess( Eddycurrent...)on the bores of the verticalstabilizer fittingand attachments.
e) Apply a thin coat of Mastinox 6856KD (MIL---P---8116 D) onnew expandable bolt (1).
Pre---MOD 70---0205---55 --- see Figure 1, DetailA
f) IncompliancewithFigure2,installnewexpandablebolt( 1),springwashers(5), washer (4)and nut (3). Donot tighten.
NOTE :
Itispossibletoreinstalltheboltwithheaddirectedtothe exteriorinordertotorque the bolt easier.
Post---MOD 70---0205---55 --- see Figure 1, DetailB
f) IncompliancewithFigure3,installnewexpandablebolt( 1),washer(4)andnut
(3).Donottighten --- refertoChapter55---30---00,Page4 01oftheMaintenance Manual.
NOTE :
Itispossibletoreinstalltheboltwithheaddirectedtothe exteriorinordertotorque the bolt easier.
6) If exfoliation corrosion is detected, transmit a report with photos or drawings to DAHER sothat 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)to62 --- 71 lbf.in (7--- 8 N.m).
9) If necessary, screw toalign the notches ofnuts (3)with the first pin hole.
10) Safetywith new cotter pin (2)supplied with bolt.
11) Using a torque wrench, torque nuts (9)to53 lbf.in (6 N.m).
12) If necessary, screw toalign the notches ofnuts (9)with the first pin hole.
13) Safetywith new cotter pin (10)supplied with bolt.
14) Perform protection reinforcement --- refertoParagraph B.
SERVICE BULLETIN
TBM AIRCRAFT
MANDATORY The technicalcontent ofthis document is approved under the authorityofDOA No. EASA.21J.013 is the subject ofan AD SB 70--104 REVISION 4 55 ATANo.
Page 5 / 8JUN03 Rev. 4 --- DEC 18 This document is the property of DAHER AEROSPACE. Reproduction prohibited without prior DAHER AEROSPACE agreement B. PROTECTIONREINFORCEMENT
1) ApplyacoatofWADIS24(MIL---C---16173Dgrade3)orLPS3 (DA---4---653---40)or ARDROX3140(MIL---C---16173Dgrade2)onthefrontandrear fittingparts andon the bolts and washers.
UPDATING OF THE AIRCRAFT DOCUMENTATION :
UponcompletionofServiceBulletinNo.SB70---104---55,R evision4”INSPECTIONOFTHE VERTICAL STABILIZER ATTACHMENT FITTINGS”, make an appropriate maintenance record entry.
WARNING : DAHER AEROSPACE considers that it is MANDATORY for operators to comply with the instructions of this SB.
Operatorswhoarbitrarilyignorethecompliancestatement indicatedinthisSBdosoattheir own risk.
SERVICE BULLETIN
TBM AIRCRAFT
MANDATORY The technicalcontent ofthis document is approved under the authorityofDOA No. EASA.21J.013 is the subject ofan AD SB 70--104 REVISION 4 55 ATANo.
Page 6 / 8JUN03 Rev. 4 --- DEC 18 This document is the property of DAHER AEROSPACE. Reproduction prohibited without prior DAHER AEROSPACE agreement Figure 1 --- Identificationofbolts
SERVICE BULLETIN
TBM AIRCRAFT
MANDATORY The technicalcontent ofthis document is approved under the authorityofDOA No. EASA.21J.013 is the subject ofan AD SB 70--104 REVISION 4 55 ATANo.
Page 7 / 8JUN03 Rev. 4 --- DEC 18 This document is the property of DAHER AEROSPACE. Reproduction prohibited without prior DAHER AEROSPACE agreement Figure 2 --- Inspection offittings and bolts Pre---MOD70---0205---55 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
TBM AIRCRAFT SERVICE BULLETIN SB 70 - 104 REVISION 4 55 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 - Expandable bolt 2 - Cotter pin 3 - Nut 4 - Washer 6 - Expandable bolt 8 - Washer 9 - Nut 10 - Cotter pin 4553000AAABMA14600 10 Figure 3 - Inspection of fittings and bolts Post-MOD 70-0205-55 JUN 03 Page 8 / 8 Rev. 4 - DEC 18 This document is the property of DAHER AEROSPACE. Reproduction prohibited without prior DAHER AEROSPACE agreement