SDR FDEA202506191006

Service difficulty report · Crossbeam · Boeing 75721B

Difficulty date: June 19, 2025
Submitted: June 19, 2025
Operation: Air carrier
Aircraft: N934FD
Make and model: Boeing 75721B
Aircraft serial: 24331
Aircraft time: 63,481 hours, 41,269 cycles
System (JASC): 5310 · Fuselage Main, Structure
Part: Crossbeam
Part number: 144N50055
Condition: Corroded
Location: Zone 200
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

DOT 86-160 STA 1060-1100, LBL 0-24 CORROSION AROUND SCREWHOLES. CROSSBEAM AT BS 1060-1100, BL0-LBL24 CORROSION BEYOND ALLOWABLE LIMITS, REMOVED DAMAGE CROSSBEAM AND REPLACED WITH FABRICATED CROSSBEAM IAW DWG #144N5005, SRM 53-40-51 DETAIL 1 AND SRM 51-40-02 AT BS 1060-1100, BL0-LBL24, MAJOR REPAIR

More about the Boeing 757-21B