# SDR 2026FA0000780

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 23, 2026
- Submitted: September 23, 2026
- Operation: General aviation
- Aircraft: [N857QS](https://openairdocs.org/aircraft/N857QS), registered now
- Make and model: Textrn TEXTRON700
- Aircraft serial: 0110
- Aircraft time: 3,208 hours, 1,951 cycles
- System (JASC): [7830 · Engine Thrust Reverser](https://openairdocs.org/jasc/7830)
- Part: Thrust Reverser
- Condition: Corroded
- Location: Zone 400
- 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/2026FA0000780

## Discrepancy

CORROSION ON THE INSIDE SURFACE OF LH ENGINE THRUST REVERSER PIVOT DOORS AND RH ENGINE THRUST REVERSER LOWER PIVOT DOOR AND INBOARD BEAM. REMOVED CORROSION AND VERIFIED REMAINING MATERIAL THICKNESS USING ULTRASONIC TESTING. APPLIED TREATMENT, PRIMER, AND TOP COAT AS REQUIRED BY THE MANUFACTURER. ALL WORK ACCOMPLISHED IAW NO. 907-623 REVISION B, . LH UPPER PIVOT DOOR MATERIAL THICKNESS WAS BEYOND  SPEC AFTER CORROSION REMOVAL AND ULTRASONIC TESTING. ACCOMPLISHED CORROSION REPAIR, TREATMENT, PRIMER, AND TOP COAT OF LH UPPER PIVOT DOOR IAW RFTS-118596 REV 0 N857QS (700-0110).

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