# SDR AALA2019101429011

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 10, 2019
- Submitted: October 14, 2019
- Operation: Air carrier
- Aircraft: [N807AW](https://openairdocs.org/aircraft/N807AW), registered now
- Make and model: Airbus A319-132
- Registry model: [Airbus A319-132](https://openairdocs.org/model/airbus-a319-132) (OpenAirDocs)
- Aircraft serial: 1064
- Aircraft time: 64,974 hours, 29,001 cycles
- System (JASC): [2910 · Hydraulic System, Main](https://openairdocs.org/jasc/2910)
- Part: Reducer
- Part number: MS21916J128
- Condition: Leaking
- Location: Hyd System
- Stage of operation: DE
- How discovered: O
- Nature of condition: K, J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA2019101429011

## Discrepancy

AIRCRAFT WAS GROUNDED: PILOT REPORTS DURING DESCENT ON AUTO-PILOT AIRCRAFT ABRUPTLY PITCHED DOWN - AUTO PILOT DISENGAGED AND ECAM INDICATED B+Y SYSTEM FAILURE - MOMENTARILY - RECOVERED AIRCRAFT - BLUE SYSTEM INDICATIONS RESOLVED ON THERE OWN- HAND FLEW APPROACH. ON WALK AROUND AFTER LANDING FOUND LARGE LEAK ON #1 BRAKE ON LEFT MLG. HYD FLUID UNDER FUSELAGE. MAINTENANCE FOUND LEAK FROM PTU HP MANIFOLD UPPER REDUCER. REPLACED REDUCER AND O-RING IAW AMM 29-13-15. NO PUMP CAUTION, PERFOMED TSM 29-10-00-810-803-A FOR LOSS OF PRESSURE . ALL CHECKS GOOD, NO LEAKS NOTED.

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