Service difficulty report · Attach Angle · Boeing 7378H4

Difficulty date
April 7, 2026
Submitted
May 11, 2026
Operation
Air carrier
Aircraft
N8534Z
Make and model
Boeing 7378H4
Aircraft serial
63578
Aircraft time
29,412 hours, 14,746 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

HFEC VERIFIED BS 663 VAPOR BARRIER ATTACH ANGLE CRACKED APPROX. RBL 9. REMOVED ALL FASTENERS ON R/H VERTICAL FLANGE IN REPAIR AREA STA 663 RBL 5 TO RBL 16 IAW SRM 57-10-10-2R-5. CUT AND REMOVED DAMAGED SECTION OF RH VAPOR BARRIER ATTACH ANGLE FROM RBL 5 TO RBL 17 PER SRM 57-10-10-2R-5. LOCATED AND DRILLED REPLACEMENT RT VAPOR ANGLE ATTACH ANGLE SECTION FROM RBL 5 TO RBL 17, BEGAN FABRICATING REPAIR DOUBLER, AND LOCATED AND DRILLED VERTICAL FASTENER HOLES AND 3 OF THE 6 FUEL TANK FASTENER HOLES PER SRM 57-10-10-2R-5.24. REPAIRED STA. 663 VAPOR BARRIER ATTACH ANGLE FROM RBL 5 TO RBL 22 PER SRM 57-10-10-2R-5; EA-M-25-157-00244 (TTG8Q01BK8BU); AND EA-M-24-157-02340 (TTG8Q01BK8BX).

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