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 PAX CABIN RBL 44 SEAT TRACK AT: STA 727E+8 TO 727E+11 (CROWN); 827 TO 827+13 (WELL); 847+14 (WELL); 867+5 (CROWN).<[01] VERIFIED APPLICABILITY FOR SRM 53-00-52-1A-1; ALLOWABLE DAMAGE 1;[02] UPDATED STEP 2.;[03] REMOVED SEAT TRACK AT BS 727B-887; RBL 45 WL208 IAW SRM 51-40-02-0G-0;[04] UPDATED SEAT TRACK APPLICABILITY;[05] UPDATE TO ITEM #4. COMPLETED STEP;[06] CERTIFY;[07] RE-UPDATE FOR STEP #4. REQUIRES QC VERIFICATION;[08] CERTIFY ACTION #7;[09] UPDATED DRAWING INFORMATION FOR STEP #4;[10] COMPLETED STEP 5; OK TO INSTALL;[11] STEP 6 PARTIAL UPDATE;[12] PARTIAL STEP 6.;[13] COMPLETED STEPS 6;7. SEAT TRACK INSTALLATION COMPLETE.;[14] REPLACED CABIN SEAT TRACK AT RBL 44 BS 727B -887 PER SRM 51-40-05-0G-0; SRM 51-40-02-0G-0; DWG 146A5300.;[15] VERIFIED CORRECTIVE ACTION #14

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