Service difficulty report · Support · Boeing 7377H4

Difficulty date
March 31, 2022
Submitted
April 25, 2022
Operation
Air carrier
Aircraft
N769SW
Make and model
Boeing 7377H4
Aircraft serial
30588
Aircraft time
74,146 hours, 43,614 cycles
Part
Support
Condition
Corroded
Location
Aft 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 ACB FLOOR SUPPORT AT STA927; LBL 2; WL 179. / [01] REMOVED CORROSION ON ACB FLOOR SUPPORT BS927; LBL 2; WL 179 IN AREA OF L=2'XW=2'XD=.006' REMAINING THICKNESS OF .074' OF ORIGINAL THICKNESS OF .080'; FOUND TO BE IN LIMITS IAW SRM 53-70-53-0I-2; SRM 53-00-53-1A-2 AND BAC1520-1397.;[02] REMOVED CORROSION ON ACB FLOOR SUPPORT BS927; LBL 2; WL 179 IN AREA OF L=2'XW=2'XD=.006' REMAINING THICKNESS OF .064' OF ORIGINAL THICKNESS OF .070'; FOUND TO BE IN LIMITS IAW SRM 53-70-53-0I-2; SRM 53-00-53-1A-2 AND BAC1520-1397.<BR>DIAL DEPTH GAUGE USED ID:ATS2473 DUE:07/2022;[03] REMOVED CORROSION ON ACB FLOOR SUPPORT BS927; LBL 2; WL 179 IN AREA OF L=2'XW=2'XD=.010' REMAINING THICKNESS OF .070' OF ORIGINAL THICKNESS OF .080'; FOUND TO BE OUT OF LIMITS IAW SRM 53-70-53-0I-2; SRM 53-00-53-1A-2 AND BAC1520-1397.<BR>PIN POINT MIC USED USED ID:ATS1671 DUE:10/2022;[04] VERIFIED CORRECTIVE ACTION 3;[05] REMOVED ACB FLOOR SUPPORT BS887-947.5 LBL2 WL179 IAW SRM 51-40-02-0G-0.;[06] LOCATED AND DRILLED NEW ACB FLOOR SUPPORT BS887-947.5 LBL2 WL179 P/N 147A7501-13 IAW SRM 51-40-05-0G-0 AND DRAWING#147A7501.<BR>OK TO INSTALL.;[07] VERIFIED CORRECTIVE ACTION #6;[08] INSTALLED FLOOR SUPPORT LBL 2 FROM BS 887 TO BS 947 PER SRM 51-40-02 AND DWG#147A7500;[09] VERIFIED INSTALLATION OF FLOOR SUPPORT LBL 2 FROM BS 887 TO BS 947 PER SRM 51-40-02 AND DWG#147A7500.;[10] ADDED PARTS;[11] VERIFIED ALL WORK ACCOMPLISHED

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