# SDR 2007UALA03320

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 22, 2007
- Submitted: August 24, 2007
- Operation: Air carrier
- Aircraft: N506UA
- Make and model: Boeing 757222
- Aircraft serial: 24627
- Aircraft time: 56,923 hours, 21,389 cycles
- Engine: Pwa PW2037
- System (JASC): [7830 · Engine Thrust Reverser](https://openairdocs.org/jasc/7830)
- Part: Control Module
- Condition: Malfunctioned
- Location: Thrust Reverser
- Stage of operation: NR
- How discovered: O
- Nature of condition: J, K
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2007UALA03320

## Discrepancy

EMERGENCY DECLARED DUE TO LOW QUANTITY ON THE LEFT HYDRAULIC SYSTEM FLUID LEVEL.   SERVICED RIGHT HYDRAULIC SYSTEM TO FULL AND NO LEAKS FOUND.  FOUND CRACK IN NR 1 ENGINE THRUST REVERSER CONTROL MODULE.  REPLACED DIRECTIONAL FLOW CONTROL VALVE.

---
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.