Service difficulty report · Torque Box · Bolkms BK117C2

Difficulty date
September 28, 2021
Submitted
September 28, 2021
Operation
General aviation
Filed by
QR9R369D
M1 Support Services
Make and model
Bolkms BK117C2
Aircraft serial
18724279813
Aircraft time
1,526 hours
Part
Torque Box
Part number
B771M2007101
Part serial
965
Condition
Split
Stage of operation
HO
How discovered
V
Nature of condition
J
Precautionary procedure
C

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

What was found

ON HOVER, ENG SPLIT AND ENG PA DIS CAUTION ON CAD RESULTING IN A MISSION ABORT. A T/F EVALUATION REVEALED SYSTEM 1 AND 2 ENG PA DIS DISPLAYED ON CAD WITH BOTH NUMBER 1 AND 2 TQ INDICATIONS IN YELLOW WHEN PICKING THE ACFT UP TO A HOVER. ENGINE SPLIT DISPLAYED INITIALLY AT A HOVER AS WELL WITH NUMBER 2 ENG GREATER THAN 10% N1 DIFFERENE OF ENG 1. TORQUE ADJUST BOX ASSEMBLY WAS REPLACED IAW AMM77-12-00,4-2; TEST FLIGHT SUCCESSFULLY COMPLETED.

*NOT FOUND IN AIRCRAFT INQUIRY