Service difficulty report · Floor Support · Boeing 7378H4

Difficulty date
November 30, 2020
Submitted
May 21, 2021
Operation
Air carrier
Aircraft
N8607M
Make and model
Boeing 7378H4
Aircraft serial
36634
Aircraft time
27,943 hours, 12,177 cycles
Part
Floor Support
Condition
Corroded
Location
Bs 947.5
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

WET AREA FLOOR STRUCTURE STA 947.5; LBL 24 INTERCOSTAL UPPER CHORD IS CORRODED. / INTERCOSTAL UPPER CORD CORRODED STA 947.5 BLENDED AND REMOVED CORROSION 'OUT OF LIMITS' OVER 50% LOSS IAW SRM 51-10-02-0G-0 LOCATED AND DRILLED NEW -7 UPPER CORD IAW SRM 51-40-05-0G-0 ALSO BOEING DWG 147A5400 REV - ALODINED AND PRIMED NEW -7 UPPER CORD IAW AMM 51-21-41-370-803 AND AMM 51-21-72-370-801 INSTALLED NEW UPPER CORD IAW SRM 51-40-02-0G-0 ALSO BOEING DWG 147A5400 REV - PN 147A5430-7

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