# SDR SWAA2022063015197

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 3, 2022
- Submitted: June 30, 2022
- Operation: Air carrier
- Aircraft: N7850B
- Make and model: Boeing 737-7Q8
- Registry model: [Boeing 737-7Q8](https://openairdocs.org/model/boeing-737-7q8) (OpenAirDocs)
- Aircraft serial: 28238
- Aircraft time: 59,194 hours, 39,098 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Seat Track
- Condition: Corroded
- Location: Fuselage
- 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/SWAA2022063015197

## Discrepancy

CORROSION ON PASSENGER CABIN SEAT TRACK AT RBL 45 BS 560+2; BS 580+1; BS 580+4; BS 640+8. / [01] REMOVED CORROSION FROM SEAT TRACK WITH A MAX MATERIAL LOSS OF .021 ON THE TOP OF THE TRACK. FOUND TO BE OUT OF LIMITS USING TOOL ID # ATS2677 NO S/N CAL DATE 11/21 DUE 11/22. IAW SRM CH 53-00-52-1A-1.;[02] VERIFIED CORRECTIVE ACTION 1;[03] REMOVED SEAT TRACK PASSENGER CABIN AT RBL 45 FROM BS 540 TO BS 727B IAW SRM 51-40-02-0G-0;[04] LOCATED AND DRILLED NEW SEAT TRACK PASSENGER CABIN AT RBL45 FROM BS 540 TO BS 727B IAW SRM 51-40-05-0G-0 AND DWG 143A5300;[05] VERIFIED RECEIPT OF ATSHFAB-100-313 SEAT TRACK AND CONFORMED FABRICATION TO BOEING DWG# 144A5350- REFERENCE JOB NUMBER #539867. VERIFIED CORRECTIVE ACTION 3 AND 4. PART MARK PER QCM 4.35.26 STILL REQUIRED.;[06] PART MARKED SEAT TRACK PER QCM 4.35.26 OK TO INSTALL;[07] STEP 1 COMPLETED; OK TO INSTALL GIVEN.;[08] INSTALLED NEW SEAT TRACK AT BS 540 TO BS 727B RBL 45 WL 208 IAW SRM 51-40-02 AND DWG # 144A5300;[09] REJECTED INSTALLATION OF SEAT TRACK DUE TO FASTENER AT BS 663+6 INSTALLED INCORRECTLY; SEE STEP 2 FOR REJECTION.;[10] REMOVED AND INSTALLED THE FASTENER AT BS 663+6' CORRECTLY IAW SRM 51-40-02-0G-0 AND DWG 144A5300.;[11] COMPLETED STEP 2 AND VERIFIED CORRECTIVE ACTION 10.;[12] VERIFIED MEASUREMENT TABLE

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