# SDR DALA2016070905238

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 8, 2016
- Submitted: July 13, 2016
- Operation: Air carrier
- Aircraft: N956DN
- Make and model: Doug MD-90-30
- Registry model: [Doug MD-90-30](https://openairdocs.org/model/mcdonnell-douglas-md-90-30) (OpenAirDocs)
- Aircraft serial: 53526
- Aircraft time: 48,648 hours, 27,759 cycles
- System (JASC): [2740 · Stabilizer Control System](https://openairdocs.org/jasc/2740)
- Part: Gearbox
- Condition: Missing
- Location: Trim Motor
- Stage of operation: IN
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DALA2016070905238

## Discrepancy

PRIMARY TRIM MOTOR HORN RUNS CONTINUOUSLY.  FOUND GEARBOX NOT INSTALLED.  INSTALLED GEARBOX AND NEW PRIMARY LONGITUDINAL DRIVE MOTOR PER MM. OPERATION CHECKS OK.

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