SDR SWAA2025123040177

Service difficulty report · Attach Angle · Boeing 7378H4

Difficulty date: November 26, 2025
Submitted: December 30, 2025
Operation: Air carrier
Aircraft: N8518R
Make and model: Boeing 7378H4
Aircraft serial: 63593
Aircraft time: 29,569 hours, 14,824 cycles
System (JASC): 5340 · Fuselage Main, Attach Fittings
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 FWD OF LT A/C BAY, APPROXIMATE LBL 34; VAPOR BARRIER ATTACH ANGLE IS CRACKED AT FIRST FASTENER INBD OF THE SILICONIZED FLEX SEAL. HFEC VERIFIED. COMPLIED WITH NDT OF HOLES COMMON TO FUEL TANK UPPER ATTACH ANGLE PER NDT MANUAL PART 6, 51-00-00 FIG. 16. NO FAULTS FOUND. LT VAPOR BARRIER ATTACH ANGLE, REMOVED AND REPLACED IAW FAULT TTG8Q01938FE.

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