SDR IPXA2572031

Service difficulty report · Floor Support · Boeing 75724APF

Difficulty date: February 7, 2012
Submitted: March 5, 2012
Operation: Air carrier
Aircraft: N456UP
Make and model: Boeing 75724APF
Aircraft serial: 25477
Aircraft time: 13,954 hours, 23,080 cycles
System (JASC): 5320 · Fuselage Miscellaneous Structure
Part: Floor Support
Part number: 144N50053
Condition: Corroded
Location: Bs 1055 Rbl 41
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 COMPARTMENT RT SIDE BS 1055, RBL 41 AT FLOOR SUPPORT HAS (2) AREAS OF CORROSION AT SCREW HOLES. REMOVED CORROSION, ORIGINAL MATERIAL THICKNESS .050 100 PERCENT MATERIAL LOSS AT FASTENER HOLE FABRICATED AND REPLACED FLOOR SUPPORT IAW DWG 144N5005 AND CMM 9-10 INSTALLED NEW SUPPORT IAW SRM 51-40-02.

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