# SDR CALA2026071017660

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 8, 2026
- Submitted: July 10, 2026
- Operation: Air carrier
- Aircraft: [N453UA](https://openairdocs.org/aircraft/N453UA), registered now
- Make and model: Airbus A320-232
- Registry model: [Airbus A320-232](https://openairdocs.org/model/airbus-a320-232) (OpenAirDocs)
- Aircraft serial: 1001
- Aircraft time: 81,723 hours, 34,634 cycles
- System (JASC): [7932 · Engine Oil Quantity](https://openairdocs.org/jasc/7932)
- Part: Transmitter
- Part number: 8TJ309AAC1
- Part serial: 6832
- Condition: Faulty
- Location: Nr 1 Eng Oil
- Part time: 78,349 hours, 31,171 cycles
- Stage of operation: CL
- 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/CALA2026071017660

## Discrepancy

OUTBOUND CREW REPORTING LEFT ENGINE OIL QTY DROPPED FROM 5.0 TO 1.5 ENGINE WAS SHUT DOWN WHILE TAXIING BACK IN DEN ONCE IT REACHED .5 TOMC H CASTRO REPLACED LH ENGINE OIL QUANTITY TRANSMITOR REF REF AMM 79-31-15. OPS AND LEAK CHECK GOOD. PERFORMED IDLE LEAK CHECK REF AMM 71-00-00.  PERFORMED EIU TEST PRIOR TO AND AFTER REPLACEMENT OF E1 OIL QTY TRANSMITTER.  TEST PASSED BOTH TIMES IN REF WITH AMM 73-25-34-710-042-A.

---
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.