SDR COEA0602817

Service difficulty report · Adc · Aerosp ATR72202

Difficulty date: December 7, 2006
Submitted: January 5, 2007
Operation: Air carrier
Aircraft: N817FX
Make and model: Aerosp ATR72202
Aircraft serial: 256
Engine: Pwa PW124B
Propeller: Hamstd 14SF*
System (JASC): 3417 · Air Data Computer
Part: Adc
Part number: 7000700951
Condition: Failed
Location: Left
Part time: 417 hours
Stage of operation: CL
How discovered: O
Nature of condition: O
Precautionary procedure: A

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

What was found

AIR TURN-BACK, ON TAKEOFF, THE CAPT`S AIRSPEED, ALTIMETER, VSI, AND TORQUE BUG FAILED. THE CREW ELECTED TO RETURN TO DEPARTURE. THE CAUSE WAS FOUND TO BE THE NR 1 ADC. THE PART WAS REPLACED AND ALL OPERATIONAL CHECKS PERFORMED SATISFACTORY. (K)

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