SDR IPXA12572152

Service difficulty report · Floorbeam · Boeing 75724APF

Difficulty date: February 7, 2012
Submitted: March 9, 2012
Operation: Air carrier
Aircraft: N456UP
Make and model: Boeing 75724APF
Aircraft serial: 25477
Aircraft time: 13,954 hours, 23,080 cycles
System (JASC): 5315 · Fuselage Main, Floor Beam
Part: Floorbeam
Part number: 146N51491
Condition: Corroded
Location: Bs 1200
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

INSPECTION TYPE: C, MAIN CARGO FLOORBEAM STA 1200, LBL 45 TO RBL 55 FLOORBEAM CORRODED ON UPPER FLANGE AT NUTPLATE HOLES. REMOVED CORROSION. ORIGINAL THICKNESS .270, MATERIAL REMOVED IS .025-.05, REMAINING THICKNESS .180-.205, OUT OF LIMITS IAW SRM 53- 00-51-1A1. REPAIRED DAMAGED AREA IAW EA 120257 EO B757-5310-4624 2-A.

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