Service difficulty report · Attach Angle · Boeing 7378H4

Difficulty date
December 9, 2025
Submitted
January 8, 2026
Operation
Air carrier
Aircraft
N8519R
Make and model
Boeing 7378H4
Aircraft serial
36910
Aircraft time
29,979 hours, 15,053 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 CRACKED AROUND RIVET RBL 36; O/B SIDE OF SILICONE FLEX. ALODINED AND PRIMED ANY BARE METAL SURFACES TO THE REPAIR AREA AND PARTS IAW SRM 51-20-01; AND SOPM 20-41-02 SRM 57-10-10-2R-5; EA-M-24-157-02340, AND EA-M-25-157-00244. INSTALLED FASTENERS COMMON TO THE TANK AND HORIZONTAL FLANGE OF THE REPAIR ANGLE AND SPLICE ONLY IAW SRM 57-10-10-2R-5. CAP SEALED INTERIOR SIDE OF FUEL TANK FASTENERS PER SRM 51-80-01.

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