Service difficulty report · Attach Angle · Boeing 7378H4

Difficulty date
May 29, 2025
Submitted
June 25, 2025
Operation
Air carrier
Aircraft
N8692F
Make and model
Boeing 7378H4
Aircraft serial
33942
Aircraft time
29,475 hours, 14,623 cycles
Part
Attach Angle
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

BS 663 VAPOR BARRIER ATTACH ANGLE HAS A CRACK AT APPROXIMATELY RBL 9<[01] REMOVED FASTENERS FROM BS 663 VAPOR BARRIER ATTACH ANGLE LOWER LEG PER SRM 57-10-10-2R-5.;[02] INSPECTED WORK PERFORMED ON C/A #1;[03] MEASUREMENT #11 (NDT) ANSWERED INCORRECTLY. NDT IS REQUIRED PER SRM 57-10-10-2R-5. SEE STEP 1.;[04] MEASUREMENT #1 (RII) ANSWERED INCORRECTLY. SHOULD BE YES BASED ON CDCCL. PER MPM 42.3 UNSCHEDULED MAINTENANCE POLICY - FAA APPROVED; CDCCLS RELATE DIRECTLY TO SAFETY OF FLIGHT SIMILAR TO REQUIRED INSPECTION ITEMS (RIIS).;[05] REMOVED FUEL TANK FASTENERS FROM BS 663 VAPOR BARRIER ATTACH ANGLE PER SRM 57-10-10-2R-5.;[06] VERIFIED REMOVED FUEL TANK FASTENERS FROM BS 663 VAPOR BARRIER ATTACH ANGLE PER SRM 57-10-10-2R-5.;[07] REMOVED DAMAGED SECTION OF BS 663 ATTACH ANGLE PER SRM 57-10-10-2R-5;[08] VERIFIED REMOVED DAMAGED SECTION OF BS 663 ATTACH ANGLE PER SRM 57-10-10-2R-5 LINE #7;[09] FABRICATED REPAIR ANGLE AND SPLICE ANGLE PER SRM 57-10-10-2R-5. 7 AND #18. DOME SEALED INSIDE TANK FASTENERS IAW SOPM 20-50-19; AND REPAIRED BS 663 VAPOR BARRIER ATTACH ANGLE CRACK @ RBL 9 IAW SRM 57-10-10-2R-5.;[22] C/W INSPECTION OF REPAIRED BS 663 VAPOR BARRIER ATTACH ANGLE CRACK @ RBL 9 IAW SRM 57-10-10-2R-5.;[23] REPAIRED BS 663 VAPOR BARRIER ATTACH ANGLE CRACK @ RBL 9 IAW SRM 57-10-10-2R-5 AND EA M-24-157-02340.;[24] C/W INSPECTION OF C/A #23; CARD COMPLETE.

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