What was found
#1 ENG O/B INNER TR SLEEVE SATURATED AND PUDDLED WITH OIL. GROUNDED - YES. FOUND IDG AIR/OIL COOLER TO BE LEAKING. R&R #1 ENG IDG AIR/OIL COOLER PER B737-900 AMM 24-11-21. LEAK CK GOOD.
- Difficulty date
- February 12, 2020
- Submitted
- February 14, 2020
- Operation
- Air carrier
- Aircraft
- N478AS
- Make and model
- Boeing 737990ER
- Aircraft serial
- 44105
- Aircraft time
- 18,216 hours, 5,893 cycles
- System (JASC)
- 2421 · AC Generator-Alternator
- Part
- Oil Cooler
- Part number
- UA5385513
- Part serial
- 12848
- Condition
- Leaking
- Location
- Nr 1 Idg
- Part time
- 18,219 hours, 5,894 cycles
- Stage of operation
- IN
- How discovered
- 9
- Nature of condition
- K
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.