# SDR DLL13981327

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 21, 1998
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: N786DL
- Make and model: Lkheed 10113851
- Aircraft serial: 193A1123
- System (JASC): [3520 · Passenger Oxygen System](https://openairdocs.org/jasc/3520)
- Part: Timer
- Condition: Inoperative
- Location: Cabin
- Component: 25720481
- Stage of operation: IN
- Nature of condition: L
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DLL13981327

## Discrepancy

MASKS DID NOT DROP IN D-ZONE DURING OXY DROP CHECK.  REPLACED SEQUENCING TIMER (P/N 25720481)   OPS CHECK GOOD.

---
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.