Service difficulty report · Seat Track · Boeing 7377H4

Difficulty date
May 1, 2023
Submitted
May 31, 2023
Operation
Air carrier
Aircraft
N285WN
Make and model
Boeing 7377H4
Aircraft serial
32536
Aircraft time
51,630 hours, 31,054 cycles
Part
Seat Track
Part number
UNKNOWN
Condition
Corroded
Location
Zn 100 Fus Lower
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 SEAT TRACK CROWN STA 370-381 ON TOP AND IN WELL; 433-435 IN WELL LBL 45; WL 208.<[01] SRM 53-00-52-1A-1 IS APPLICABLE ALLOWABLE DAMAGE; UPDATED TABLE.;[02] VERIFIED CORRECTIVE ACTION 1.;[03] UPDATED P/N;[04] REMOVED CORROSION ON SEAT TRACK CROWN STA 370-381 ON TOP AND IN WELL; 433-435 IN WELL LBL 45; WL 208 PER SRM 51-10-02-0G-0. MAX MATERIAL REMOVED ON TOP OF CROWN WAS .035' .5' BY 1'. FOUND TO BEB OUT OF LIMITS PER SRM 53-00-52-1A-1. MEASURED BLENDED AREA WITH DIAL DEPTH GAUGE ID# ATS1225; NSN; DUE 08/2023.;[05] VERIFIED CORRECTIVE 4 AND MEASUREMENT TABLE.;[06] REMOVED SEAT TRACK AT BS 370 TO 480 LBL 45 WL 208 PER SRM 51-40-02-0G-0.;[07] LOCATED AND DRILLED NEW SEAT TRACK BS 370 TO 480 LBL 45 WL 208 PER SRM 51-40-05-0G-0. OK TO INSTALL SEAT TRACK;[08] LOCATED AND DRILLED NEW SEAT TRACK BS 370 TO 480 LBL 45 WL 208 PER SRM 51-40-05-0G-0 AND DWG 143A5300. OK TO INSTALL SEAT TRACK;[09] VERIFIED CORRECTIVE ACTION 8.<BR>OK TO INSTALL;[10] INSTALLED SEAT TRACK AT BS 370 TO 480 LBL 45 WL 208 PER SRM 51-40-02-0G-0 AND DWG 143A5300.;[11] VERIFIED CORRECTIVE ACTION 10;[12] PARTIALLY UPDATED STEP 1;[13] PARTIAL STEP 1;[14] COMPLETED STEP 1;[15] UPDATED PARTS TABLE;[16] COMPLETED STEP 1.<BR>VERIFIED MEASUREMENT TABLE;[17] CERTIFIED ACTION 15

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