SDR MTNA20220615001

Service difficulty report · None · Aerosp ATR72

Difficulty date: June 15, 2022
Submitted: June 16, 2022
Operation: Air carrier
Aircraft: N804FX
Make and model: Aerosp ATR72
Aircraft serial: 370
Aircraft time: 40,391 hours, 40,796 cycles
System (JASC): 3417 · Air Data Computer
Part: None
Condition: None
Stage of operation: TO
How discovered: V
Nature of condition: O
Precautionary procedure: C

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

What was found

DURING THE TAKEOFF ROLL, AT 70KTS, THE CREW RECEIVED AN ADU MESSAGE OF "DADC DATA INVALID," ACCOMPANIED BY A ZERO AIRSPEED INDICATION ON THE CAPTAIN'S SIDE AIRSPEED INDICATOR. THE CREW ABORTED THE TAKEOFF, NOTIFIED ATC, AND RETURNED TO THE GATE. MAINTENANCE REPLACED THE #1 AIR DATA COMPUTER WITH A SUCCESSFUL OPS CHECK.