# SDR TWAA9802907

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 1, 1998
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: N54329
- Make and model: Boeing 727231
- Aircraft serial: 20307
- System (JASC): [3230 · Landing Gear Retraction/Extension System](https://openairdocs.org/jasc/3230)
- Part: Sequence Valve
- Part number: 1U10851
- Condition: Ruptured
- Location: Lt Mlg
- Stage of operation: CL
- Nature of condition: K, J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/TWAA9802907

## Discrepancy

MCO - FLT 653 - AT GEAR RETRACTION THE 'A' HYD SYSTEM QTY AND PRESSURE DROPPED.  BOTH ENGINE PUMPS WERE DEPRESSURIZED AND FLIGHT RETURNED TO MCO.  REPLACED THE LEFT MAIN LANDING GEAR LOCK SEQUENCE VALVE.  (M)

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