Service difficulty report · Exchanger · Boeing 737900ER

Difficulty date
October 1, 2022
Submitted
October 12, 2022
Operation
Air carrier
Aircraft
N407AS
Make and model
Boeing 737900ER
Aircraft serial
41731
Aircraft time
37,009 hours, 11,568 cycles
Engine
Cfmint CFM567B27E
Part
Exchanger
Part number
453328039
Part serial
YB042850
Condition
Leaking
Location
#2 Engine
Part time
37,045 hours, 11,575 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

DURING #2 ENG RUN FOUND MAIN OIL/FUEL HEAT EXCHANGER DRAIN PAD LEAKING AT 7 DROPS PER MINUTE. GROUNDED - YES. REMOVED MAIN OIL/ FUEL HEAT EXCHANGER IAW B737-900 AMM 79-21-02/401 AND SERVO FUEL HEATER PER AMM 73-11-07/401. LEAK CHECK GOOD.

More about the Boeing 737-900ER