Service difficulty report · Seat Track · Boeing 7377H4

Difficulty date
June 16, 2021
Submitted
July 16, 2021
Operation
Air carrier
Aircraft
N489WN
Make and model
Boeing 7377H4
Aircraft serial
33855
Aircraft time
54,253 hours, 32,244 cycles
Part
Seat Track
Condition
Corroded
Location
Fuselage
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 TOP AND IN WELL OF SEAT TRACK CROWN BS 766-811 RBL 25 WL 208. ; / [01] REMOVED CORROSION ON TOP AND IN WELL OF SEAT TRACK CROWN STA 766-811; RBL 25; WL 208. MAX MATERIAL REMOVED WAS .025' .5' BY 1' ON TOP AND .009' 1' BY 1' IN WELL. OUT OF LIMITS PER SRM 53-00-52-1A-1; SRM 51-10-02-0G-0. MEASURED DEPTH WITH DIAL DEPTH GAUGE ID# ATS1225; S/N UNKNOWN; EXPIRES 04/2022; [02] VERIFIED REMOVED CORROSION ON TOP AND IN WELL OF SEAT TRACK CROWN STA 766-811; RBL 25; WL 208. MAX MATERIAL REMOVED WAS .025' .5' BY 1' ON TOP AND .009' 1' BY 1' IN WELL. OUT OF LIMITS PER SRM 53-00-52-1A-1; SRM 51-10-02-0G-0. MEASURED DEPTH WITH DIAL DEPTH GAUGE ID# ATS1225; S/N UNKNOWN; EXPIRES 04/2022; [03] REMOVED DAMAGED SEAT TRACK BS 727B-887; RBL 25; WL 208 PER SRM 51-40-02-0G-0.; [04] SEAT TRACK FABRICATED IN ACCORDANCE WITH BOEING DWG# 453A1610; REV C; ATSHFAB-100-315; REV A.; [05] SEAT TRACK FABRICATED IN ACCORDANCE WITH BOEING DWG# 453A1610; REV C; REFER TO ATS BUILD RECORD# ATSHFAB-100-315; REV A.;[09] INSTALLED NEW SEAT TRACK BS 727B-887; RBL 25; WL 208 PER SRM 51-40-02-0G-0; BOEING DWG # 146A5300; [10] VERIFIED SEAT TRACK ATSHFAB-100-315 INSTALLATION PER DWG 146A5300; [11] REMOVED AND REPLACED SEAT TRACK BS 727B-887; RBL 25; WL 208 PER SRM 51-40-02-0G-0; BOEING DWG # 146A5300; [12] SEAT TRACK REPLACEMENT COMPLETE

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