- Difficulty date
- November 13, 2021
- Submitted
- November 16, 2021
- Operation
- Air carrier
- Make and model
- Boeing 737990ER
- Aircraft serial
- 36353
- Aircraft time
- 20,836 hours, 6,601 cycles
- Part
- Cooler
- Part number
- UA5385513
- Part serial
- 13661
- Condition
- Leaking
- Location
- #1 Engine
- Part time
- 20,836 hours, 6,601 cycles
- Stage of operation
- IN
- How discovered
- O
- Nature of condition
- K
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FOUND OIL LEAKING FROM #1 ENGINE IDG AIR/OIL COOLER. GROUNDED - YES. REMOVED AND REPLACED #1 ENGINE IDG AIR/OIL COOLER IAW B737-900 AMM 24-11-21-00-801/400-801. PERFORMED LEAK CHECK OF #1 ENGINE IDG AIR/OIL COOLER PER AMM 24-11-21. NO LEAKES NOTED.