Service difficulty report · Oil Cooler · Boeing 737900ER

Difficulty date
March 9, 2018
Submitted
March 9, 2018
Operation
Air carrier
Aircraft
N403AS
Make and model
Boeing 737900ER
Aircraft serial
41730
Aircraft time
21,469 hours, 7,064 cycles
Part
Oil Cooler
Part number
UA5385513
Part serial
9813
Condition
Leaking
Location
Nr 1 Idg
Part time
21,469 hours, 7,064 cycles
Stage of operation
IN
How discovered
V
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

NR 1 IDG REQUIRES FREQUENT SERVICING. ACFT GROUNDED. ACCOMPLISHED A NR 1 IDG STATIC LEAK CHECK IAW AMM 24-11-00. FOUND EVIDENCE OF A LEAK AT THE IDG AIR/OIL COOLER. REPLACED THE IDG AIR/OIL COOLER IAW AMM 24-11-21. LEAK CHECKED GOOD.

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