Service difficulty report · Sidewall Support · Boeing 7377H4

Difficulty date
May 2, 2022
Submitted
June 9, 2022
Operation
Air carrier
Aircraft
N477WN
Make and model
Boeing 7377H4
Aircraft serial
33988
Aircraft time
60,414 hours, 35,826 cycles
Part
Sidewall Support
Part number
146A75021
Condition
Corroded
Location
Aft Cargo Bay
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 LBL 21 BS 767+18; BS 787+10; BS 787+18; BS 807+2; BS 807+11. / [01] VERIFIED APPLICABILITY FOR ALLOWABLE DAMAGE LIMITS IAW SRM 53-00-53-1A-2 ALLOWABLE DAMAGE 2 AND IDENTIFICATION IAW SRM 53-60-53-0I-2 IDENTIFICATION 2;[02] UPDATE STEP 1-5;[03] CERTIFIED CORRECTIVE ACTIONS 1-2.;[04] AFT CARGO FLOOR TO SIDEWAL STA 727 TO 847 LBL 21 REPLACEMENT RESOLVED ON FAULT TTG8Q00C893Q.;[05] VERIFIED CORRECTIVE ACTION 4

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