Service difficulty report · None · Boeing 7378H4

Difficulty date
September 1, 2022
Submitted
September 15, 2022
Operation
Air carrier
Aircraft
N8502Z
Make and model
Boeing 7378H4
Aircraft serial
36666
Aircraft time
19,989 hours, 9,530 cycles
Part
None
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 FWD CARGO BAY R/H FLOOR TO SIDEWALL SUPPORT PLATE IN MULTIPLE AREAS BS500A TO BS500I RBL24 WL156 / [01] EVALUATED CORROSION AT ALL LOCATIONS OF FLOOR TO SIDEWALL SUPPORT; FOUND DEEPEST LOCATION TO BE AT BS 500D+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 CORRECTIVE ACTION #1;[03] VERIFIED MEASUREMENT FIELD;[04] REMOVED FCB R/H FLOOR TO SIDEWALL SUPPORT BS500A-BS500I; RBL24; WL156 PER SRM 51-40-02-0G-0;[05] LOCATED; DRILLED AND DEBURRED FCB R/H FLOOR TO SIDEWALL SUPPORT BS500A TO BS500I RBL24 WL156 PER SRM 51-40-05-0G-0 AND DWG 143A7500; OK TO INSTALL;[06] VERIFIED ITEM 5 CORRECTIVE ACTIONS. OK TO INSTALL.;[07] INSTALLED NEW FCB R/H FLOOR TO SIDEWALL SUPPORT BS500A TO BS500I RBL24 WL156 PER SRM 51-40-02-0G-0 AND DWG 143A7500;[08] VERIFIED CORRECTIVE ACTION #7

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