Service difficulty report · Seat Track · Boeing 7377H4

Difficulty date
August 10, 2023
Submitted
August 24, 2023
Operation
Air carrier
Aircraft
N420WN
Make and model
Boeing 7377H4
Aircraft serial
29825
Aircraft time
72,005 hours, 42,658 cycles
Part
Seat Track
Part number
UNKNOWN
Condition
Corroded
Location
Zn 200 Fus Top
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 LBL 44 PAX CABIN SEAT TRACK CROWN AT: STA 360+7; 360+10; 360+18 TO 380+4; 400+1 AND WELL AT: 360+9 TO 360+18. WL 208.4<[01] UPDATED STEP 2.;[02] CERTIFIED STEP 2;[03] UPDATED PARTIAL STEP 11 AND 12;[04] CERTIFIED CORRECTIVE ACTION 3;[05] STEP 13 COMPLETE.;[06] STEP 12 COMPLETE;[07] VERIFIED STEP 14 COMPLETE.;[08] STEPS 3-9 COMPLETE. STEPS 15-20; OK TO CLOSE/INSTALL.;[09] VERIFIED STEP 21 IN PARTIAL.;[10] UPDATED STEP 21;[11] VERIFIED ACTION 10.;[12] CARD COMPLETE.;[13] CARD COMPLETE.;[14] REMOVED CORROSION ON SEAT TRAK BS 360-480; FOUND TO BE OUT OF LIMITS; REMOVED AND REPLACED SEAT TRACK PER SRM 51-40-02.;[15] VERIFIED STEP 21 COMPLETE; MEASUREMENT TABLE AND ALL STEPS COMPLETE;[16] VERIFIED

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