# SDR CALA9601767

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 9, 1996
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: N578PE
- Make and model: Boeing 727243
- Aircraft serial: 21661
- System (JASC): [2730 · Elevator Control System](https://openairdocs.org/jasc/2730)
- Part: Control Module
- Part number: 6595600642
- Condition: Inoperative
- Location: Elevator
- Stage of operation: TO
- Nature of condition: K, J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA9601767

## Discrepancy

THE AIRCRAFT LOST A-SYSTEM HYDRAULIC PRESSURE AND QUANTITY APPROXIMATELY 10 MINUTES AFTER TAKEOFF.  THE AIRCRAFT LANDED WITHOUT INCIDENT.  MAINTENANCE FOUND THE A-SYSTEM ELEVATOR CONTROL MODULE AT FAULT.  THE ELEVATOR CONTROL MODULE WAS REPLACED.  THE NR 1 ENGINE DRIVEN PUMP WAS ALSO REPLACED DUE TO FAILURE.  LEAK AND OPERATIONAL CHECKS WERE NORMAL.

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