Service difficulty report · Support Angle · Boeing 7377H4

Difficulty date
June 8, 2025
Submitted
July 7, 2025
Operation
Air carrier
Aircraft
N297WN
Make and model
Boeing 7377H4
Aircraft serial
32542
Aircraft time
57,549 hours, 34,726 cycles
Part
Support Angle
Condition
Corroded
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

CORROSION ON AFT BULKHEAD TO FLOOR SUPPORT ANGLE AT ACB BS947 RBL12 WL180. REMOVED AND REPLACED AFT BULKHEAD LOWER SUPPORT ANGLE BS947 RBL20 TO LBL10 WL180 IAW SRM 51-40-02-0G-0; IAW SRM 51-40-05-0G-0 AND DWG # 149A8117 REV:C. RII REJECTION OF STEP 2: AFT BULKHEAD LOWER SUPPORT ANGLE AT BS 947 HAS 2EA MISSING FASTENERS AT LBL3; 2EA MISSING FASTENERS AT RBL 14; AND 2EA MISSING FASTENERS COMMON TO STR 22R STRINGER CLIP ARE INSTALLED MISSING RIVETS AFT BULKHEAD LOWER SUPPORT ANGLE AT BS 947 2EA; AT LBL 3 2EA; AT RBL 14 2EA; AND COMMON TO STR 22R STRINGER CLIP IAW SRM 51-40-02-0G-0 AND DWG 149A8117 REV:C.

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