# SDR 2000UALA00776

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 4, 2000
- Submitted: January 17, 2001
- Operation: Air carrier
- Aircraft: N505UA
- Make and model: Boeing 757222
- Aircraft serial: 24626
- Aircraft time: 37,529 hours, 14,227 cycles
- Engine: Pwa PW2037
- System (JASC): [3230 · Landing Gear Retraction/Extension System](https://openairdocs.org/jasc/3230)
- Part: Control Unit
- Part number: 6380040026
- Condition: Contaminated
- Part time: 37,000 hours, 14,000 cycles
- 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/2000UALA00776

## Discrepancy

ALTERNATE EXTEND MOTOR CIRCUIT BREAKER POPS WHEN GEAR DOOR OPEN SWITCH ACTUATED.  *S/D*  FOUND INTERNAL MECHANISM OF POWER PACK CORRODED AND FULL OF WATER AND SKYDROL.  REPLACED ALTERNATE EXTENSION POWER PACK.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.