# SDR DALA2025051203680

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 10, 2025
- Submitted: May 12, 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): [5510 · Horizontal Stabilizer Structure](https://openairdocs.org/jasc/5510)
- Part: Hinge Fitting
- Condition: Corroded
- Location: Zone 300
- 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/DALA2025051203680

## Discrepancy

FRETTING CORROSION (UT) THICKNESS MEASUREMENT WAS ACCOMPLISHED PLATE RH OUTBD ON VERTICAL STABILIZER SPAR HINGE. FITTINGS WITH ORIGINAL THICKNESS =0.250" AND MINIMUM REMAINING THICKNESS IS 0.212" THEREFORE IT IS OUT LIMITS. SUMMARY OF NRC 00820: CORROSION LEVEL 2. PLATE RH OUTBD ON VERTICAL STABILIZER SPAR HINGE FITTINGS (2 EA) WERE REPLACED PER B717-200 SRM 51-41-05 PAR 8. (LP #0958134)

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