Service difficulty report · Attach Angle · Boeing 7378H4

Difficulty date
July 22, 2025
Submitted
August 19, 2025
Operation
Air carrier
Aircraft
N8501V
Make and model
Boeing 7378H4
Aircraft serial
41530
Aircraft time
29,503 hours, 14,754 cycles
Part
Attach Angle
Condition
Cracked
Location
Zone 100
Stage of operation
IN
How discovered
9
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

CRACK FOUND BS 663 VAPOR BARRIER ATTACH ANGLE AT APPROXIMATELY LBL 9. REMOVED DAMAGED SECTION OF VAPOR BARRIER ATTACH ANGLE IAW SRM 57-10-10-2R-5. ACCOMPLISHED HFEC HOLE PROBE OF FASTENER HOLES COMMON TO FUEL TANK AND HFEC SURFACE INSP OF ATTACH ANGLE CUT LINE. NO DEFECTS NOTED, IAW NDT PART 6 51-00-00 PROC. 16 & 51-00-00 PROC. 23. FABRICATED REPAIR PARTS IAW SRM 57-10-10-2R-5, INSTALLED TANK FASTENERS IN THE REPAIR PARTS COMMON TO THE. VAPOR BARRIER ATTACH ANGLE IAW SRM 57-10-10-2R-5. C/W FASTENER INSTALL DOME SEALED FASTENERS INSIDE CENTER FUEL TANK COMMON TO VAPOR BARRIER ATTACH ANGLE IAW SOPM 20-50-19. INSTALLED FASTENERS IN VERTICAL LEG OF VAPOR BARRIER ATTACH ANGLE IAW SRM 57-10-10-2R-5. INSTALLED FASTENERS IN VERTICAL LEG OF VAPOR BARRIER ATTACH ANGLE IAW SRM 57-10-10-2R-5. CAP SEALED FASTENERS IN VERTICAL LEG OF VAPOR BARRIER ATTACH ANGLE IAW SRM 57-10-10-2R-5. CAP SEALED FASTENERS IN VERTICAL LEG OF VAPOR BARRIER ATTACH ANGLE IAW SRM 57-10-10-2R-5. REPAIRED BS 663 VAPOR BARRIER ATTACH ANGLE AT APPROXIMATELY LBL 9 IAW SRM 57-10-10.

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