Service difficulty report · Floor Support · Boeing 73776N

Difficulty date
August 4, 2020
Submitted
September 3, 2020
Operation
Air carrier
Aircraft
N7884G
Make and model
Boeing 73776N
Aircraft serial
30133
Aircraft time
62,884 hours, 25,819 cycles
Part
Floor Support
Part number
146A1201
Condition
Corroded
Location
Bs 727a-727b
Stage of operation
IN
How discovered
9
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 INTERCOSTAL AT ACB BS727A TO 727B LBL17 WL154. REMOVED CORROSION FROM ACB INTERCOSTAL BS727A-TO-727B LBL-17 WL-154 IN AREA L=1'; W=0.8' MORE THAN 50% MATERIAL THICKNESS LOST ORIGINAL MATERIAL THICKNESS 0.045' FOUND TO BE OUT OF LIMIT IAW SRM 53-00-53-1A-2 STEP 4C FIG 103-D. LOCATED AND DRILLED NEW INTERCOSTAL ITEM #146A7505 U3 IAW SRM 51-40-05-0G-0 AND DWG #146A7505 AND INSTALLED IAW SRM 51-40-02-0G-0 AND DWG #146A7500 AND DWG #146A1201.

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