Service difficulty report · Vapor Barrier · Boeing 7378H4

Difficulty date
November 14, 2024
Submitted
December 13, 2024
Operation
Air carrier
Aircraft
N8523W
Make and model
Boeing 7378H4
Aircraft serial
36969
Aircraft time
26,231 hours, 13,036 cycles
Part
Vapor Barrier
Condition
Cracked
Location
Zone 100
Stage of operation
IN
How discovered
V
Nature of condition
O
Precautionary procedure
K

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

L/H A/C BAY STA 663 ANGLE TO VAPOR BARRIER CRACKED AT FASTENER HOLE<[01] REMOVED DAMAGED L/H VAPOR BARRIER ANGLE FOR REPLACEMENT PER SRM 51-40-02.;[02] ACCOMPLISHED HFEC HOLE PROBE INSPECTION OF REPAIR AREA PER NDT PART 6 51-00-00 PROC. 16 NO DEFECTS NOTED;[03] LOCATED AND DRILLED NEW L/H VAPOR BARRIER ANGLE AT STA.663 PER SRM 51-40-05. OK TO INSTALL REPLACEMENT PART PER SRM 51-40-02.;[04] INSPECTED WORK ABOVE;[05] OK TO INSTALL;[06] INSTALLED FASTENERS IN NEW L/H VAPOR BARRIER ANGLE INSIDE FUEL CELL ONLY PER SRM 51-40-02.;[07] INSPECTED WORK ABOVE;[08] CAP SEALED L/H VAPOR BARRIER FUEL TANK FASTNERS INSIDE FUEL CELL PER SRM 51-40-02;[09] VERIFIED ALL L/H VAPOR BARRIER FUEL TANK FASTNERS INSIDE FUEL CELL ARE CAP SEALED. SIGN OFF FOR CORRECTIVE ACTION #8.;[10] REMOVED AND REPLACED ANGLE PER SRM 51-40-02. REF CORRECTIVE ACTIONS 1 THRU 9.;[11] C/W INSPECTION OF C/A #8;[12] C/A #11 IS WRITTEN IN ERROR. SEE STEP #13 FOR PROPER SIGN OFF.;[13] C/W INSPECTION OF C/A #10;[14] FUEL LEAK CHECKS WERE ACCOMPLISHED ON L/H AND R/H A/C BAY STA 663 ANGLE TO VAPOR BARRIER FASTENERS TO FUEL TANK REQUIRE FUEL LEAK CHECK. REF TTG8Q00X2BKZ AND TTG8Q00X2B2K. [TTG8Q00XD6UZ;[15] INSP VERIFIED FUEL LEAK CHECK C/W ON TTG8Q00XD6UZ.

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