Service difficulty report · Support · Boeing 7377H4

Difficulty date
March 9, 2022
Submitted
April 11, 2022
Operation
Air carrier
Aircraft
N468WN
Make and model
Boeing 7377H4
Aircraft serial
33858
Aircraft time
58,378 hours, 34,580 cycles
Part
Support
Condition
Corroded
Location
Fwd Cargo
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 FLOOR TO SIDEWALL SUPPORT AT FWD CARGO BAY BS420 - BS500D LBL24. / [01] EVALUATED CORROSION ON FLOOR TO SIDEWALL SUPPORT AT ALL LOCATIONS; FOUND DEEPEST LOCATION TO BE AT BS 460+10 LBL 24 WL 156; FOUND 0.015 REMOVED FROM ORIG 0.040 IN 1'X1' AREAS FOUND TO BE OUT OF LIMITS PER SRM 53-00-53-1A-2 USING DIAL DEPTH GAUGE ATS 2473;[02] VERIFIED CORRECTIVE ACTION #1;[03] FABRICATED REPAIR PARTS FOR FCB LH FLOOR TO SIDEWALL SUPPORT; BS 396-500D; LBL 24. IAW SRM 53-00-53-2R-5; SPLICE AT BS480+10. APPLIED CHEMICAL CONVERSION COATING IAW SRM 51-20-01-0G-0. MATERIAL; BAC1496-444#7075T62; LOT#1479718-1. IAW SRM 53-30-53-01-2. AND OK TO PRIME.;[04] VERIFIED CORRECTIVE ACTION #3;[05] PRIMED AND ASSEMBLED REPAIR PARTS FOR FCB LH FLOOR TO SIDEWALL SUPPORT; BS396-500D; IAW SRM 53-00-53-2R-5; DWG 143A7500.;[06] INSPECTED ACTION 5;[07] JOB COMPLETE

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