Service difficulty report · Ahrs · Pilats PC1247

Difficulty date
August 23, 2010
Submitted
January 4, 2011
Operation
Air carrier
Make and model
Pilats PC1247
Engine
Pwa PT6A67
Propeller
Hartzl HCE4A3D
Part
Ahrs
Part number
KSG7200
Condition
Failed
Part time
843 hours
Stage of operation
NR
How discovered
9
Nature of condition
O
Precautionary procedure
O

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

What was found

(CAN) RE, SDR 20100826008 . (AIRSPEED DEFECT) SAME ADAHRS. ADAHRS REPLACED TO ALSO ADDRESS A ONE TIME REPORTED PITCH MISCOMPARE WARNING. THE DISPARITY WAS ON THE RT PFD AND RETURNED TO NORMAL SHORTLY AFTER. THE PITCH MISCOMPARE WARNING WAS CONFIRMED BY ANALYSIS OF THE FAULT HISTORY DATABASE. SUGGEST THE ADAHRS WAS AT FAULT.