Service difficulty report · Warning Unit · Bolkms BK117C2

Difficulty date
November 26, 2024
Submitted
November 26, 2024
Operation
General aviation
Filed by
QR9R369D
M1 Support Services
Make and model
Bolkms BK117C2
Aircraft serial
10721399370
Aircraft time
3,521 hours
Part
Warning Unit
Part number
B315M5007051
Part serial
LE1537
Condition
Failed
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

ENG #2 START SWITCH FAILED TO ENGAGE ALONG WITH NO OTHER INDICATIONS. MAINTENANCE PERSONNEL ATTEMPTED TO VENTILATE #2, NO INDICATIONS OF N1 INCREASE. REMOVED AND REPLACED WARNING UNIT IAW AMM 31-50-00, 4-1. CHECKED GOOD IAW AMM 05-60-00, 6-12.