Service difficulty report · Floorbeam · Boeing 75724APF

Difficulty date
March 6, 2011
Submitted
March 9, 2011
Operation
Air carrier
Aircraft
N402UP
Make and model
Boeing 75724APF
Aircraft serial
23724
Aircraft time
27,361 hours, 19,027 cycles
Part
Floorbeam
Condition
Corroded
Location
Bs 1681
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:C3, MAIN CARGO BAY BS 1681 FLOORBEAM NUT PLATE STRAP IS CORRODED RBL 52, WL 207 ON FWD UPPER FLANGE LOWER SIDE. AFTER INVESTIGATION NO ALLOWABLE DAMAGE AVAILABLE IN SRM FOR NUT PLATE STRAP. REMOVED NUT PLATE STRAP AT BS 1681, RBL 52, WL 207 IAW SRM 51-40-02-0G. FABRICATED REPLACEMENT STRAP OUT OF 7075-T6 .063 LOT 947170 IAW DWG 146N5693 REV C, DRILLED, ALODINED, PRIMED, PAINTED AND INSTALLED IAW SRM 51-40-02-0G.

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