Service difficulty report · Web · Boeing 7377H4

Difficulty date
May 26, 2020
Submitted
July 29, 2021
Operation
Air carrier
Aircraft
N477WN
Make and model
Boeing 7377H4
Aircraft serial
33988
Aircraft time
55,517 hours, 32,839 cycles
Part
Web
Condition
Corroded
Location
Bs 440-494
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 FORWARD CARGO BAY THRESHOLD SUBWEB AT B.S. 440-494; R.B.L. 28; W.L. 154. / REMOVED DAMAGED FWD CARGO BAY THRESHOLD SUBWEB LOCATED; DRILLED; COUNTER SUNK NEW SUBWEB THRESHOLD. INSTALLED NEW FWD CARGO BAY SUBWEB THRESHOLD IAW SRM 51-40-02; SRM 51-40-05; SRM 51-40-08 DWG #143A8330 7191U 01JUN20

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