SDR SWAA2025071079625

Service difficulty report · Support · Boeing 7377BD

Difficulty date: June 8, 2025
Submitted: July 10, 2025
Operation: Air carrier
Aircraft: N7721E
Make and model: Boeing 7377BD
Aircraft serial: 34479
Aircraft time: 61,888 hours, 33,237 cycles
System (JASC): 5320 · Fuselage Miscellaneous Structure
Part: Support
Condition: Corroded
Location: Zone 100
Stage of operation: IN
How discovered: E
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 SUPPORT ZEE LOCATED BTW BS 500A TO BS 500C, WL 156, AND RBL 21 IN THE FWD CARGO COMPARTMENT. REPLACED SUPPORT ZEE IAW SRM 51-10-02, ITEM 9, SRM 51-40-02, AND DWG 143A7500, SHEET 58, REV -, AND DWG 143A7505, SHEET 6, REV D.

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