# SDR ARWA20070601

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 4, 2007
- Submitted: June 8, 2007
- Operation: Air carrier
- Aircraft: N68041
- Make and model: Doug DC-10-10
- Registry model: [Doug DC-10-10](https://openairdocs.org/model/mcdonnell-douglas-dc-10-10) (OpenAirDocs)
- Aircraft serial: 46900
- Aircraft time: 91,244 hours, 33,969 cycles
- System (JASC): [2133 · Pressure Regulator/Outflow Valve](https://openairdocs.org/jasc/2133)
- Part: Outflow Valve
- Condition: Lack Of Lube
- Location: Cabin Pressure
- Stage of operation: CR
- 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/ARWA20070601

## Discrepancy

WITH ALL 3 PACKS OPERATING, UNABLE TO MAINTAIN CABIN ALTITUDE BELOW 10,000.  OUTFLOW VALVE FULL CLOSED (MANUALLY).  FOUND THRUST RECOVERY VALVE LOCKED OPEN; LUBED OUTFLOW VALVE MECHANISM; CHECK MANUALLY OPERATION NORMAL ON GROUND IN ACCORDANCE WITH DC-10 M/M 21-31-04 AND 21-30-00.  TRANSFERED TO DMI NR 20774.

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