Service difficulty report · Seat Track · Boeing 7377H4

Difficulty date
February 18, 2025
Submitted
March 12, 2025
Operation
Air carrier
Aircraft
N436WN
Make and model
Boeing 7377H4
Aircraft serial
32456
Aircraft time
72,135 hours, 42,840 cycles
Part
Seat Track
Condition
Corroded
Location
Zone 100
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 ON SEAT TRACK - LBL 45; WL 208; BS 370 - 374 <[01]. REMOVED CORROSION FROM SEAT TRACK LBL 45 WL 208 BS 332-364 IN A 32' X .4' .007' AREA FROM CROWN OF TRACK AND 15' X .8' X .056' AREA FROM WELL OF TRACK. FOUND SEAT TRACK TO BE OUT OF LIMITS PER SRM 53-00-52-1A-1. REMOVED AND REPLACED PASSENGER CABIN SEAT TRACK FROM BS370 TO BS480 LBL45 WL208 PER SRM 51-40-02-0G-0; DWG 143A5300 SHT. 14 REV.: A AND SHT. 22 REV.: -; [02] REMOVED CORROSION FROM SEAT TRACK LBL 45 WL 208 BS 370-374 IN A 32' X .4' .007' AREA FROM CROWN OF TRACK AND 15' X .8' X .056' AREA FROM WELL OF TRACK. FOUND SEAT TRACK TO BE OUT OF LIMITS PER SRM 53-00-52-1A-1. REMOVED AND REPLACED PASSENGER CABIN SEAT TRACK FROM BS370 TO BS480 LBL45 WL208 PER SRM 51-40-02-0G-0; DWG 143A5300 SHT. 14 REV.: A AND SHT. 22 REV.: -;[03] CORRECTIVE ACTION 1 ENTERED IN ERROR. FAULT COMPLETE; [04] VERIFIED STEP 3; ITEM 5; CABIN SEAT TRACK INSTALLATION.; [05] VERIFIED ALL STEPS; CORRECTION ACTION ITEM 4; MEASUREMENT FIELD COMPLETE; CARD COMPLETE.

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