# SDR UPS00433641

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 26, 2000
- Submitted: August 28, 2000
- Operation: Air carrier
- Aircraft: [N673UP](https://openairdocs.org/aircraft/N673UP), registered now
- Make and model: Boeing 747123
- Aircraft serial: 20325
- System (JASC): [3520 · Passenger Oxygen System](https://openairdocs.org/jasc/3520)
- Part: Oxygen Mask
- Condition: Failed
- Location: Cabin
- Stage of operation: IN
- How discovered: C
- Nature of condition: L
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UPS00433641

## Discrepancy

INSPECTION TYPE:C, PASSENGER O2 FAILED TO DROP AUTOMATICALLY WITH CABIN ALT AT 14.7.  CLEARED O2 COMPT''S DOOR EDGES AND FRAMES FROM PANEL AND RECHECKED PER MM 35-20-00.  FOUND OK.

---
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.