Service difficulty report · Thermocouple · Bolkms BK117C2

Difficulty date
March 11, 2025
Submitted
March 11, 2025
Operation
General aviation
Filed by
QR9R369D
M1 Support Services
Make and model
Bolkms BK117C2
Aircraft serial
9106
Aircraft time
4,605 hours
Part
Thermocouple
Part number
0177887050
Condition
Failed
Location
Eng Ind Sys
Stage of operation
TX
How discovered
V
Nature of condition
F
Precautionary procedure
C

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

What was found

FLI DEGRADED ON THE NUMBER ONE ENGINE FOR TOT AFTER START UP. TROUBLESHOOTING REVEALED #1 ENGINE THERMOCOUPLE BOX FAILED CONTINUITY CHECK OF THE EQUIPPED BOARD; RED MODULES EXCEEDS THE ALLOWABLE LIMITS. REPLACED THERMOCOUPLE BOX IAW SAFRAN 77-22-00-900-802-A01.