# SDR DALA2026100705546

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 16, 2026
- Submitted: October 8, 2026
- Operation: Air carrier
- Aircraft: [N709TW](https://openairdocs.org/aircraft/N709TW), registered now
- Make and model: Boeing 757-2Q8
- Registry model: [Boeing 757-2Q8](https://openairdocs.org/model/boeing-757-2q8) (OpenAirDocs)
- Aircraft serial: 28168
- Aircraft time: 92,348 hours, 24,497 cycles
- System (JASC): [3520 · Passenger Oxygen System](https://openairdocs.org/jasc/3520)
- Part: Tee Fitting
- Condition: Disconnected
- Location: Zone 200
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DALA2026100705546

## Discrepancy

DURING THE REPLACEMENT OF THE CHEMICAL OXYGEN GENERATORS, MECHANICS DISCOVERED SEVERAL OF THE TEE-FITTING MANIFOLDS DISCONNECTED FROM THE CHEMICAL OXYGEN GENERATORS.   C/W ERA 636985-14. (8644548)(AIRCRAFT GROUNDED)

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