Service difficulty report · Seat Track · Boeing 7377H4

Difficulty date
March 7, 2023
Submitted
April 12, 2023
Operation
Air carrier
Aircraft
N956WN
Make and model
Boeing 7377H4
Aircraft serial
36672
Aircraft time
38,869 hours, 23,696 cycles
Part
Seat Track
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

PASSENGER CABIN - SEAT TRACK HAS CORROSION LBL 45.5 BS 601+1; BS 616+16; BS 685+11.<[01] VERIFIED APPLICABILITY FOR SRM 53-00-52-1A-1.<BR>REMOVED CORROSION FROM WELL OF PASSENGER CABIN - SEAT TRACK LBL 45.5 FROM BS685+11 TO BS685+13 L=2.0' X W=.900' X D=.045'; FOUND TO BE OUT OF LIMITS PER SRM 53-00-52-1A-1; PAR. 4.A.(2).(A). FIG. 103; DETAIL A. ID TOOL: ATS1738; S/N: UNKNOWN; D.D.: 10/2023.;[02] CERTIFIED CORRECTIVE ACTION 1;[03] VERIFIED CORRECTIVE ACTION 1 AND MEASUREMENT TABLE.;[04] REMOVED PASSENGER CABIN SEAT TRACK FROM B.S. 540 - B.S. 727B; LBL 45 PER SRM 51-40-02-0G-0;[05] RECEIVED NEW SEAT TRACK. SEAT TRACK FABRICATED IN ACCORDANCE WITH BEING DRAWING 144A5350. REFER TO ATS BUILD RECORD ATSHFAB-100-313. PART MARKED PER QCM 4.35.26;[06] LOCATED AND DRILLED SEAT TRACK PER DWG# 144A5350 AND SRM 51-40-05.<BR><BR>OK TO INSTALL;[07] CERTIFIED CORRECTIVE ACTION 6;[08] CORRECTION TO CORRECTIVE ACTION 5: DISREGARD SEAT TRACK FABRICATED IN ACCORDANCE WITH BEING DRAWING 144A5350. REFER TO ATS BUILD RECORD ATSHFAB-100-313. PART MARKED PER QCM 4.35.26.<BR><BR>RECEIVED NEW SEAT TRACK P/N: 144A5350-3ATSMRO;[09] VERIFIED CORRECTIVE ACTIONS 6 AND 8;[10] INSTALLED PASSENGER CABIN SEAT TRACK LOCATED AT LBL 45; B.S. 540 - B.S. 727B PER DWG # 144A5300 REV. E.; SRM 51-40-02-0G-0 AND AMM 20-50-11-910-801 TABLE 204. TORQUE CAL ID: PER2323; S/N: 27661-4222; DUE DATE: 02/2024;[11] CERTIFIED CORRECTIVE ACTION 10;[12] VERIFIED CORRECTIVE ACTION 10

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