# SDR CALA2025072306862

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 21, 2025
- Submitted: July 24, 2025
- Operation: Air carrier
- Aircraft: [N783UA](https://openairdocs.org/aircraft/N783UA), registered now
- Make and model: Boeing 777222
- Aircraft serial: 26950
- Aircraft time: 114,074 hours, 14,927 cycles
- System (JASC): [3510 · Crew Oxygen System](https://openairdocs.org/jasc/3510)
- Part: Transducer
- Part number: 10015748
- Condition: Faulted
- Location: Zone 100
- Stage of operation: CL
- How discovered: O
- Nature of condition: N
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2025072306862

## Discrepancy

CREW OXYGEN DROPPED FROM 1480 TO 90 FOUND CREW O2 BOTTLE WITHIN SERVICE LIMITS. REMOVED AND REPLACED CREW O2 PRESSURE TRANSDUCER IAW AMM 35-11-03. OPS CHECK NORMAL. NO LEAKS NOTED. CREW O2 READS 1650.

---
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.