Service difficulty report · Support · Boeing 7377CT

Difficulty date
June 3, 2021
Submitted
July 12, 2021
Operation
Air carrier
Aircraft
N7823A
Make and model
Boeing 7377CT
Aircraft serial
32749
Aircraft time
61,112 hours, 30,940 cycles
Part
Support
Condition
Corroded
Location
Bs 500a
Stage of operation
IN
How discovered
V
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 IN FWD CARGO COMPARTMENT ON AFT FLOOR TO SIDEWALL SUPPORT AT BS 500A+10 RBL 25 WL 156 ; / [01] EVALUATED CORROSION ON FLOOR TO SIDEWALL SUPPORT; FOUND 0.020 REMOVED FROM ORIG 0.040 IN 1'X1' AREA; FOUND TO BE OUT OF LIMITS PER SRM 53-00-53-1A-2 USING MICROMETER 4566A S/N UNKNOWN; [02] VERIFIED - CORROSION ON FLOOR TO SIDEWALL SUPPORT; FOUND 0.020 REMOVED FROM ORIG 0.040 IN 1'X1' AREA; FOUND TO BE OUT OF LIMITS PER SRM 53-00-53-1A-2; [03] REMOVED FCB R/H FLOOR TO SIDEWALL SUPPORT BS500A-BS500D; RBL 25; WL 156. PER SRM 51-40-02-0G-0; [04] LOCATED AND DRILLED FCB FLOOR TO SIDEWALL SUPPORT BS 500A-500D; RBL 25 PER SRM 51-40-05; DWG#143A7500.; [05] VERIFIED LOCATED AND DRILLED FCB FLOOR TO SIDEWALL SUPPORT BS 500A-500D; RBL 25 PER SRM 51-40-05; DWG#143A7500.; [06] OLD FLOOR TO SIDEWALL SUPPORT BS 500A-500D RBL25 WL 156 WAS REMOVED ON SWA CARD# 5330-E-16461-NG. OK TO INSTALL NEW FLOOR TO SIDEWALL SUPPORT; [07] OK TO INSTALL; [08] INSTALLED FLOOR TO SIDEWALL SUPPORT BS 500A-500D RBL 25 WL 156 PER SRM 51-40-02-0G-0; DWG 143A7500 AND DWG 143A7505; [09] INSTALLED FLOOR TO SIDEWALL SUPPORT BS 500A-500D RBL 25 WL 156 PER SRM 51-40-02-0G-0; DWG 143A7500 AND DWG 143A7505; [10] INSTALLED FLOOR TO SIDEWALL SUPPORT BS 500A-500D RBL 25 WL 156 PER SRM 51-40-02-0G-0; DWG 143A7500 AND DWG 143A7505; [11] COMPLETE; [12] VERIFIED INSTALLATION FLOOR TO SIDEWALL SUPPORT BS 500A-500D RBL 25 WL 156 PER SRM 51-40-02-0G-0; DWG 143A7500 AND DWG 143A7505; [13] COMPLETE

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