Service difficulty report · Thermocouple · Bolkms BK117C2

Difficulty date
May 10, 2019
Submitted
May 21, 2019
Operation
Air carrier
Aircraft
N453MH
Make and model
Bolkms BK117C2
Aircraft serial
9136
Aircraft time
6,244 hours
Engine
Tmeca ARRIEL1E2
Part
Thermocouple
Part number
9550179250
Condition
Failed
Location
Nr 2 Engine
Stage of operation
CR
How discovered
O
Nature of condition
P
Precautionary procedure
K

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

What was found

IN CRUISE FLIGHT, THE ENG PA DIS LIGHTS ILLUMINATED IN BOTH LANES OF THE CAD. PERFORMED ENGRUN, TO REVEAL #2 ENG TEMP DIFFERENCE OF APPROX. 200DEG. REM'D ALL 3 THERMOCOUPLES. INSTALLED 3EA SERVICEABLE THERMOCOUPLES. PERFORMED GROUND RUN, FUNCTION CHK'D GOOD. PERFORMED OPERATIONAL CHK FLIGHT. NO DEFECTS FOUND. ACFT RETURNED TO SERVICE.