SDR ASAA2016081517717

Service difficulty report · Heat Exchanger · Boeing 737890

Difficulty date: August 15, 2016
Submitted: August 19, 2016
Operation: Air carrier
Aircraft: N512AS
Make and model: Boeing 737890
Aircraft serial: 39043
Aircraft time: 30,974 hours, 9,421 cycles
System (JASC): 7920 · Engine Oil Distribution (Airframe Furnished)
Part: Heat Exchanger
Part number: 118411934
Part serial: YY083622V
Condition: Leaking
Location: Fuel / Oil
Stage of operation: TX
How discovered: O
Nature of condition: K
Precautionary procedure: O

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

What was found

NR 2 ENGINE DRIPPING FLUID. DRIPS TIMED AT 30 PER MINUTE BUT STOPPED COMPLETELY AFTER 2 MINUTES. ACFT GROUNDED. REMOVED NR 2 ENGINE MAIN OIL/FUEL HEAT EXCHANGER, IAW AMM TASK 79-21-02-000-801-F00. INSTALLED NR 2 ENGINE MAIN OIL/FUEL HEAT EXCHANGER STEPS A THRU H, IAW AMM 79-21-02-400-801-F00. INSPECTION TASK 79-21-02-400-801-F00, STEP I COMPLETED, LEAK CHECKED GOOD.