# SDR 98ZZZM815

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 1, 1998
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: [N429EX](https://openairdocs.org/aircraft/N429EX), registered now
- Make and model: Boeing 727-22C
- Registry model: [Boeing 727-22C](https://openairdocs.org/model/boeing-727-22c) (OpenAirDocs)
- Aircraft serial: 19100
- System (JASC): [3230 · Landing Gear Retraction/Extension System](https://openairdocs.org/jasc/3230)
- Part: Sequence Valve
- Part number: 1U1085
- Condition: Broken
- Location: Rt Mlg
- Stage of operation: TO
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/98ZZZM815

## Discrepancy

FLT 641 - SFO-SEA - LOSS 'A' SYSTEM HYDRAULIC ON TAKEOFF, FOLLOWED RYAN PROCEDURES AS PER REF E-16 RYAN FLT HANDBOOK.  REMOVED AND REPLACED RIGHT MAIN GEAR LOCK OPERATED SEQUENCE VALVE.  (M)

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