# SDR HAEA200900211

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 2, 2009
- Submitted: October 5, 2009
- Operation: Air carrier
- Aircraft: N277TW
- Make and model: Lear 24
- Registry model: [Lear 24](https://openairdocs.org/model/learjet-24) (OpenAirDocs)
- Aircraft serial: 24277
- Aircraft time: 16,378 hours, 17,290 cycles
- System (JASC): [2913 · Hydraulic Pump (Electric/Engine), Main](https://openairdocs.org/jasc/2913)
- Part: Pump
- Part number: 238006
- Part serial: 1717
- Condition: Failed
- Location: Hyd System
- Part time: 408 hours
- Stage of operation: AP
- How discovered: O
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/HAEA200900211

## Discrepancy

ON DESCENT, ACFT HYD PRESSURE GAUGE READ ZERO.  LANDING GEAR EXTENDED MANUALLY.  ACFT LANDED NORMALLY.  MX REPLACED NR1 AND NR2 ENGINE DRIVEN HYD PUMP. OPS CHECK GOOD AFTER MX.  [CLOSED]

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.