Service difficulty report · Air Data Module · Bolkms BK117C2

Difficulty date
September 16, 2026
Submitted
September 16, 2026
Operation
General aviation
Filed by
QR9R369D
M1 Support Services
Make and model
Bolkms BK117C2
Aircraft serial
9807
Aircraft time
4,295 hours
Part
Air Data Module
Part number
C17027DA01
Part serial
2162
Condition
Inaccurate
Location
Nav System
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

RIGHT AIRSPEED INDICATOR INDICATED 30+ KNOTS CONSISTENTLY, ALL OTHER AIRSPEED INDICATORS INDICATED 0. MAINTENANCE ATTEMPTED TO CIRCULATE AIR THROUGH RIGHT PITOT TUBE WITH NO EFFECT. REMOVED AND REPLACED #2 ADU; OPERATIONAL CHECK SUCCESSFULLY COMPLETED.