# SDR SWAA2023041214153

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 8, 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): [5322 · Fuselage Internal Mounting Structure](https://openairdocs.org/jasc/5322)
- 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/SWAA2023041214153

## Discrepancy

PASSENGER CABIN SEAT TRACK AT BS 500D+19' LBL 45.5 HAS CORROSION<[01] SRM 53-00-52-1A-1 WAS FOUND TO BE APPLICABLE FOR DAMAGE REMOVAL.;[02] REMOVED CORROSION ON UPPER SURFACE OF SEAT TRACK BETWEEN 500D+19 - 520+1 IAW SRM 51-10-02-0G-0<BR><BR>500D+19 - 520+1 2'X .4'X .023' LBL 45<BR><BR>FOUND TO BE OUT OF LIMITS IAW SRM 53-00-52-1A-1<BR>ATS 1225 S/N UNKNOWN DUE 08/2023;[03] CERTIFY;[04] VERIFIED CORRECTIVE ACTIONS 1; 2; AND MEASUREMENT TABLE.;[05] REMOVED SEAT TRACK AT BS 480-520 LBL45 WL 208 PER SRM 51-40-02=0G-0;[06] FABRICATED SEAT TRACK IAW BOEING DRAWING# 143A5310 ON JOB # 553594. PART MARKED IAW ATS QCM 4.35.26. LOCATED AND DRILLED IAW SRM CH 51-40-05 AND DRAWING #143A5300. OK TO INSTALL.;[07] VERIFIED CORRECTIVE ACTION 6; OK TO INSTALL;[08] UPDATED STEP 1 AND INSTALLED SEAT TRACK AT BS 480-BS 520 LBL45 IAW SRM CH 51-40-02 AND DRAWING # 143A5300.;[09] UPDATED STEP 1 AND INSTALLED SEAT TRACK AT BS 480-BS 520 LBL45 IAW SRM CH 51-40-02 AND DRAWING # 143A5300. USING ATS TOOL ID # ATS2295 S/N SP18E30027 CAL DUE 11/2023.;[10] REJECTION OF CORRECTIVE ACTION 9: SEE STEP 2;[11] COMPLETED INSTALLATION OF SEAT TRACK AT BS 480-520 LBL 45 IAW SRM CH 51-40-02 AND DRAWING #143A5300. UPDATED STEP 2.;[12] VERIFIED STEP 1;[13] VERIFIED STEP 2 AND CORRECTIVE ACTIONS 9 AND 11;[14] INSTALLED NEW TRACK PN 143A5310-53 PER EA 23-153-00871.;[15] VERIFIED ALL STEPS COMPLETE

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