Service difficulty report · Support · Boeing 7377H4

Difficulty date
May 26, 2020
Submitted
August 5, 2021
Operation
Air carrier
Aircraft
N477WN
Make and model
Boeing 7377H4
Aircraft serial
33988
Aircraft time
55,517 hours, 32,839 cycles
Part
Support
Condition
Corroded
Location
Bs 727-847
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 AFT CARGO BAY FLOOR TO SIDEWALL SUPPORT AT B.S. 727-847; L.B.L. 21; W.L. 154. / CORROSION ON SUPPORT P/N 146A7502-1 FOUND TO BE OUT OF LIMITS DUE TO PROXIMITY OF FASTENER HOLES IAW SRM 53-00-53-1A-2 FIG 103 DETAIL D; REMOVED AND REPLACED AFT CARGO BAY FLOOR TO SIDEWALL SUPPORT AT BS 727-847; LBL 21; WL 154 IAW DWG 146A7500

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