# SDR TAMF20250504050

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 3, 2025
- Submitted: May 5, 2025
- Operation: Air carrier
- Aircraft: [N334QT](https://openairdocs.org/aircraft/N334QT), registered now
- Make and model: Airbus A330-243F
- Registry model: [Airbus A330-243F](https://openairdocs.org/model/airbus-a330-243f) (OpenAirDocs)
- Aircraft serial: 1448
- Aircraft time: 44,636 hours, 13,561 cycles
- Engine: Rroyce RB211TRENT77
- Engine time: 42,462 hours, 13,018 cycles
- System (JASC): [7261 · Turbine Engine Oil System](https://openairdocs.org/jasc/7261)
- Part: Drain
- Condition: Leaking
- Location: Nr 1 Engine
- Stage of operation: CL
- How discovered: O
- Nature of condition: K, J
- Precautionary procedure: E, A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/TAMF20250504050

## Discrepancy

AIRCRAFT N334QT DEPARTED FROM MDE STATION, AND DURING CLIMB, LOW OIL QUANTITY AND LOW OIL PRESSURE INDICATIONS WERE OBSERVED FOR ENGINE NUMBER 1. AS A RESULT, THE FLIGHT CREW PERFORMED AN IN-FLIGHT SHUTDOWN OF THE AFFECTED ENGINE AND RETURNED TO MDE.  DURING MAINTENANCE CHECKS, THE ACCESSORY GEARBOX DRAIN PLUG ON ENGINE NUMBER 1 WAS FOUND TO BE LOOSE, A CONDITION THAT RESULTED IN OIL LOSS DURING FLIGHT. IT IS IMPORTANT TO NOTE THAT THE AIRCRAFT HAD JUST UNDERGONE MAINTENANCE, DURING WHICH THE ENGINE NUMBER 1 OIL PUMP WAS REPLACED. AN INVESTIGATION IS CURRENTLY UNDERWAY TO DETERMINE THE CAUSE OF THE LOOSE DRAIN PLUG, AS THIS PLUG IS NOT REQUIRED TO BE REMOVED AS PART OF THE OIL PUMP REPLACEMENT PROCEDURE.

---
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.