# SDR YENA2022122101278

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 5, 2022
- Submitted: December 21, 2022
- Operation: Air carrier
- Aircraft: [N4022J](https://openairdocs.org/aircraft/N4022J), registered now
- Make and model: Airbus A321-271N
- Registry model: [Airbus A321-271N](https://openairdocs.org/model/airbus-a321-271n) (OpenAirDocs)
- Aircraft serial: 10303
- Aircraft time: 4,638 hours, 687 cycles
- System (JASC): [2913 · Hydraulic Pump (Electric/Engine), Main](https://openairdocs.org/jasc/2913)
- Part: Pressure Switch
- Part number: 4501310000
- Part serial: 21820
- Condition: Failed
- Location: 3074gd
- Part time: 4,765 hours, 705 cycles
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/YENA2022122101278

## Discrepancy

FLT#20,  LHR-JFK. (ETOPS) 'ON HYD PAGE ENG 2 EDP SHOWS IN LINE GREEN WITH HYD ENG 2 PUMP PUSH BUTTON SWITCH IN AUTO .- DEPRESSUIZTION FUNCTION (ENGINE DRIVEN PUMP SYS - DEPRESS FUNC); REF AWM 29-13-02, CHK WIRING AT FIN 3074GD SHIELDING AND WIRE. THE CONTINUITY CHECK IS GOOD. REMOVED AND REPLACED ENG 2 PUMP PRESS SWITCH FIN 3074GD AS A PRECAUTIONARY T/SHOOTING IAW 29-12-00. RAN ENG 2 AT IDLE AND OPS TEST YELLOW HYD SYS IAW 29-13-00 WITH FLT CONTROLS OPS TEST. ALL OPS CHECK IS NORMAL. CLEARED MDDR# 493753. MX-4 UPDATED AND MCC NOTIFIED.'

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