# SDR AALA20151211013

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 11, 2015
- Submitted: December 14, 2015
- Operation: Air carrier
- Aircraft: N471AA
- Make and model: Doug DC-9-82
- Registry model: [Doug DC-9-82](https://openairdocs.org/model/mcdonnell-douglas-dc-9-82) (OpenAirDocs)
- Aircraft serial: 49601
- Aircraft time: 77,923 hours, 41,479 cycles
- System (JASC): [2910 · Hydraulic System, Main](https://openairdocs.org/jasc/2910)
- Part: B-Nut
- Condition: Loose
- Location: Thrust Reverser
- Stage of operation: DE
- How discovered: O
- Nature of condition: K
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA20151211013

## Discrepancy

EMERGENCY DECLARED, LANDING UNEVENTFUL & ACFT NOT OVERWEIGHT.  DURING DECENT WHEN FLAPS 15 WAS SELECTED, THE RT HYD QTY & PRESS DROPPED TO ZERO.  FOUND HYD FLUID LEAKING AT RT THRUST REVERSER B NUT.  TIGHTENED B NUT.  OPERATIONAL & LEAK CHECKED GOOD IAW AMM 29-00-00.

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