# SDR DALA1220230921

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 1, 2012
- Submitted: April 3, 2012
- Operation: Air carrier
- Aircraft: N921DL
- Make and model: Doug MD-88
- Registry model: [Doug MD-88](https://openairdocs.org/model/mcdonnell-douglas-md-88) (OpenAirDocs)
- Aircraft serial: 49645
- Aircraft time: 61,462 hours, 47,255 cycles
- System (JASC): [5347 · Fuselage, Seat/Cargo Attach Fittings](https://openairdocs.org/jasc/5347)
- Part: Seat Track
- Condition: Corroded
- Location: Bs 1263
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DALA1220230921

## Discrepancy

CORROSION LBL 22 SEAT TRACK HAS CORROSION AT BS 1263.  REMOVED CORROSION ON LBL 22 SEAT TRACK BS 1263.  AREA IS 4" X 1.3" WITH A DEPTH OF .087" IN THE SEAT TRACK WELL AND REMOVED MATERIAL ON SIX LOCKDOWN TABS TO A MINIMUM OF .39" FOUND CORROSION REMOVAL AREA TO BE OUT OF LIMITS.  ALL WORK PER DC9/MD88 SRM 53-05 FIG 4B1 SHEETS 1 AND 2 REMOVAL AND REPLACEMENT OF TRACK COMPLIED WITH AT ATS/PAE ON W/O 717720 ITEM 00036.

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