Service difficulty report · Oil Cooler · Boeing 737890

Difficulty date
November 9, 2018
Submitted
November 14, 2018
Operation
Air carrier
Aircraft
N588AS
Make and model
Boeing 737890
Aircraft serial
35685
Aircraft time
41,964 hours, 12,706 cycles
Part
Oil Cooler
Part number
453328039
Part serial
YB028560L
Condition
Failed
Location
Nr 2 Engine
Part time
44,714 hours, 13,381 cycles
Stage of operation
IN
How discovered
O
Nature of condition
O
Precautionary procedure
K

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

NR 2 ENG MAIN OIL/FUEL HEAT EXCHANGER FAILED RUN ON TORQUE CHECK FOR FUEL TUBE (7) REF AMM 79-21-02-400-801-F00 STEP 3 G (3) (H),3. GROUNDED - YES. REPLACED NR 2 ENG MAIN OIL/FUEL HEAT EXCHANGER PER AMM 79-21-02. LEAK CHECK GOOD. GROUND VERIFICATION GOOD.