Service difficulty report · Support · Boeing 7378H4

Difficulty date
September 25, 2022
Submitted
October 11, 2022
Operation
Air carrier
Aircraft
N8504G
Make and model
Boeing 7378H4
Aircraft serial
38812
Aircraft time
20,122 hours, 9,566 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

FWD CARGO BAY R/H FLOOR TO SIDEWALL SUPPORT PLATE HAS MULTIPLE AREAS OF CORROSION BS500A TO BS500I RBL24 WL156 / [01] EVALUATED CORROSION AT ALL LOCATIONS OF FLOOR TO SIDEWALL SUPPORT; FOUND DEEPEST LOCATION TO BE AT BS 500F+10 RBL 24 WL 156; FOUND 0.015 REMOVED FROM ORIG 0.040 IN NUMEROUS 1'X1' AREAS; FOUND TO BE OUT OF LIMITS PER SRM 53-00-53-1A-2 USING DIAL DEPTH GAUGE ATS 2678 DUE 04/2023;[02] VERIFIED MEASUREMENT FIELDS; VERIFIED ACTION #1;[03] REMOVED DAMAGED SECTION OF FLOOR TO SIDEWALL SUPPORT RBL 24 WL 156 BS 500I-500A IAW SRM 53-00-53-2R-5 .;[04] LOCATED AND DRILLED NEW FCB LH FLOOR TO SIDEWALL SUPPORT BS 500A-500I; RBL24; IAW SRM 51-40-02-0G-0; SRM 51-40-05-0G-0. AND OK TO INSTALL.;[05] CORRECTION TO STEP 3 REFERENCE; REMOVAL REFERENCE IS SRM 51-40-02-0G-0;[06] VERIFIED ACTION #4; OK TO INSTALL GIVEN;[07] INSTALLED FCB RH FLOOR TO SIDEWALL SUPPORT; BS500A-500I; BRL24; IAW SRM 51-40-02-0G-0; DWG 143A7500.;[08] VERIFIED CORRECTIVE ACTION 7

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