# SDR 20000522AP001

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 24, 2000
- Submitted: May 22, 2000
- Operation: Air carrier
- Aircraft: [N808MA](https://openairdocs.org/aircraft/N808MA), registered now
- Make and model: Boeing 727231
- Aircraft serial: 21988
- System (JASC): [2910 · Hydraulic System, Main](https://openairdocs.org/jasc/2910)
- Part: Valve
- Part number: BAC10607106
- Condition: Failed
- Location: Hydraulic Sys
- Stage of operation: CR
- How discovered: O
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/20000522AP001

## Discrepancy

UPON REACHING CRUISE ALT FL310, AIRCRAFT EXPERIENCED TOTAL SYSTEM A HYD FAILURE.  ACCOMPLISHED ''A'' SYSTEM HYDRAULIC FAILURE CHECKLIST, IAW AOM VOL 1 EMERGENCY PROCEDURES.  DECLARED AN EMERGENCY AND RETURNED TO MIAMI, DID NOT DUMP FUEL.  FOUND 3 WAY VALVE IN LEFT WHEEL WELL WITH ACTUATOR AND BODY SEPARATED AND THE FOUR ATTACHING SCREWS CRACKED.  REPLACED 3 WAY VALVE PER MM 29-11-62.  SERVICED HYDRAULIC SYSTEM PER MM 12-12-00.  OPS CHECK OK.  (M)

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