# SDR DALA2025051403729

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 13, 2025
- Submitted: May 14, 2025
- Operation: Air carrier
- Aircraft: [N921AT](https://openairdocs.org/aircraft/N921AT), registered now
- Make and model: Boeing 717-200
- Registry model: [Boeing 717-200](https://openairdocs.org/model/boeing-717-200) (OpenAirDocs)
- Aircraft serial: 55082
- Aircraft time: 58,523 hours, 42,407 cycles
- System (JASC): [5347 · Fuselage, Seat/Cargo Attach Fittings](https://openairdocs.org/jasc/5347)
- Part: Seat Track
- Condition: Corroded
- Location: Zone 200
- 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/DALA2025051403729

## Discrepancy

CORROSION ON SEAT TRACK X=22 Y=200 TO Y= 210 (ON SEAT TRACK LOWER FLANGES). ORIGINAL THICKNESS BOTTOM IS 0.100 IN AND MINIMUM REMAINING THICKNESS IS 0.030 IN THEREFORE AREA IS OUT OF LIMITS PER B717 SRM 53-20-52-1A PROCEDURE 1 PAR 4 FIG 101. AND DC-MD/BOEING NDT SPM PAR 4, 04-00-06 PAR 4 FIG 9. SUMMARY OF NRC 00677: SECTION SEAT TRACK X=22 Y=200 TO Y=238 WAS REPLACED DUE CORROSION LEVEL 2 PER B717-200 SRM 53-20-52-2R PROC 5, REPAIR 5 FIG 201; 51-41-01-0G, AND 51-41-05-0G. (LP #0964136)

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