# SDR SWAA2023041213603
- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 7, 2023
- Submitted: April 12, 2023
- Operation: Air carrier
- Aircraft: [N956WN](https://openairdocs.org/aircraft/N956WN), registered now
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 36672
- Aircraft time: 38,869 hours, 23,696 cycles
- System (JASC): [5320 ยท Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Seat Track
- Condition: Corroded
- Location: Zn 200 Fus Top
- Stage of operation: IN
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SWAA2023041213603
## Discrepancy
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.
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.
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.
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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