What was found
ATB - PERFORMED AIR TURN BACK TO BOS FOR RIGHT ENGINE OIL QUANTITY LOSS. REPLACED UPPER AND LOWER #4 SCAVENGE LINES AND SEALS. PERFORMED ENGINE RUN AND LEAK CHECK. OK FOR SERVICE. (9212238) AIRCRAFT WAS GROUNDED.
- Difficulty date
- August 28, 2026
- Submitted
- August 31, 2026
- Operation
- Air carrier
- Aircraft
- N815NW
- Make and model
- Airbus A330323
- Aircraft serial
- 0817
- Aircraft time
- 85,516 hours, 11,278 cycles
- Engine
- Pwa PW4168A
- System (JASC)
- 7261 · Turbine Engine Oil System
- Part
- Line
- Condition
- Leaking
- Location
- Engine Oil
- Stage of operation
- CR
- How discovered
- O
- Nature of condition
- K, J
- Precautionary procedure
- A
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.