# SDR DL75E101187

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 7, 2010
- Submitted: May 13, 2010
- Operation: Air carrier
- Aircraft: [N711ZX](https://openairdocs.org/aircraft/N711ZX), registered now
- Make and model: Boeing 757231
- Aircraft serial: 28481
- Aircraft time: 43,413 hours, 14,451 cycles
- System (JASC): [5210 · Passenger/Crew Doors](https://openairdocs.org/jasc/5210)
- Part: Reservoir
- Condition: Discharged
- Location: R4 Door
- Stage of operation: IN
- How discovered: V
- Nature of condition: K
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DL75E101187

## Discrepancy

THE PRESSURE IN THE EMERGENCY POWER RESERVOIR FOR DOOR 4R WAS FOUND TO BE DEPLETED.  THE RESERVOIR WAS REPLACED AND THE SYSTEM WAS RETURNED TO NORMAL OPERATING CONDITION PER MM 52-11-30.

---
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.