# SDR SIMA201115801

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 4, 2011
- Submitted: June 7, 2011
- Operation: Air carrier
- Aircraft: [N639AE](https://openairdocs.org/aircraft/N639AE), registered now
- Make and model: Emb EMB-145LR
- Registry model: [EMB EMB-145LR](https://openairdocs.org/model/embraer-emb-145lr) (OpenAirDocs)
- Aircraft serial: 145182
- System (JASC): [2913 · Hydraulic Pump (Electric/Engine), Main](https://openairdocs.org/jasc/2913)
- Part: Pump
- Part number: 971808
- Part serial: MX600080
- Condition: Failed
- Location: Hydraulic Sys
- Stage of operation: CL
- 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/SIMA201115801

## Discrepancy

ON FLIGHT 2944 DURING TAKEOFF THE CREW REPORTED, RECEIVED A NR 1 HYDRAULIC PUMP FAIL EICAS MESSAGE AT GEAR RETRACTION.  THE CAPTAIN ELECTED TO RETURN TO MAF.  THE AIRCRAFT LANDED WITHOUT INCIDENT.  THE AIRCRAFT WAS REMOVED FROM SERVICE.  REMOVED AND REPLACED NR 1 HYDRAULIC PUMP IAW EMB 145 AMM 29-10-04 LEAK CHECK OK AT THIS TIME.  PART NUMBER 971808.  SERIAL NUMBER MX600080.  REMOVED AND REPLACED NR 1 HYDRAULIC ELECTRIC MOTOR DRIVEN PUMP IAW EMB 145 AMM 29-10-03.  PART NUMBER MPEV30086.  SERIAL NUMBER MX642084.  LEAK CHECK GOOD AT THIS TIME.  REMOVED AND REPLACED HYDRAULIC LINES AT LMLG ACTUATOR IAW EMB 145 AMM 32-10-01.  LEAK CHECK GOOD AT THIS TIME.  SYS BLEED C/W IAW AMM 29-10-00.  REMOVED AND REPLACED HYDRAULIC LINES AT LMLG ACTUATOR IAW EMB 145 AMM 32-10-01, LEAK CHECK GOOD AT THIS TIME.  SYS BLEED C/W IAW AMM 29-10-00.  REMOVED AND REPLACED NR 1 HYDRAULIC SYSTEM PRESSURE, CASE AND RETURN FILTERS IAW EMB 145 AMM 29-10-08.  NO CONTAMINATION FOUND.  THE LEAK CHECK WAS GOOD.  THE AIRCRAFT WAS RETURNED TO SERVICE.

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