Service difficulty report · Attach Angle · Boeing 7378H4

Difficulty date
April 7, 2026
Submitted
May 6, 2026
Operation
Air carrier
Aircraft
N8531Q
Make and model
Boeing 7378H4
Aircraft serial
63575
Aircraft time
29,638 hours, 14,907 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 CRACK AT RBL 9. REMOVED VAPOR BARRIER ATTACH ANGLE AT BS633, RBL 9 IAW SRM 51-40-02. LOCATED AND MATCH DRILLED NEW RT BS 663 VAPOR BARRIER ATTACH ANGLE IAW SRM 51-40-06. PERFORMED NDT PER PART 6; 51-00-00 PROCEDURE 16 OF HOLES COMMON TO REPAIR; IN TANK HOLES AND WEB HOLES. INSTALLED FASTENERS COMMON TO FUEL TANK IAW SRM 51-40-02

More about the Boeing 737-8H4