Service difficulty report · Support · Boeing 7378H4

Difficulty date
February 17, 2022
Submitted
March 3, 2022
Operation
Air carrier
Aircraft
N8681M
Make and model
Boeing 7378H4
Aircraft serial
36904
Aircraft time
20,561 hours, 9,510 cycles
Part
Support
Part number
143A7501188
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

FWD CARGO HAS CORROSION AT BS500D+11 RBL25 WL156 COMMON TO R/H FLOOR TO SIDEWALL SUPPORT PLATE / [01] EVALUATED CORROSION; BS 500D+11 RBL 25 WL 156; FOUND 0.025 REMOVED FROM ORIG 0.040 IN 1'X1' AREA FOUND TO BE OUT OF LIMITS PER SRM 53-00-53-1A-2 USING DIAL DEPTH GAUGE ATS 2473;[02] VERIFIED CORRECTIVE ACTION 1. OUT OF LIMITS.;[03] REMOVED FLOOR TO SIDEWALL SUPPORT R/H BS500A TO 500I RBL25 WL156 PER SRM 51-40-02-0G-0.;[04] LOCATED; DRILLED; DEBURRED NEW FCB FLOOR TO SIDEWALL PLATE BS 500A-BS 500I; RBL 25; WL 156 IAW SRM 51-40-05-0G-0; DWG# 143A7500. OK TO INSTALL NEW FLOOR TO SIDEWALL PLATE.;[05] VERIFIED CORRECTIVE ACTION STEPS 3 AND 4. VERIFIED OK TO INSTALL.;[06] INSTALLED NEW FCB FLOOR TO SIDEWALL PLATE BS 500A-BS 500I; RBL 25; WL 156 IAW SRM 51-40-02-0G-0; DWG# 143A7500.;[07] VERIFIED CORRECTIVE ACTION STEP 6.;[08] COMPLETE.

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