SDR TRBA20121021002

Service difficulty report · Unknown · Aerosp ATR72

Difficulty date: October 21, 2012
Submitted: November 2, 2012
Operation: Air carrier
Aircraft: N425MJ
Make and model: Aerosp ATR72
Aircraft serial: 425
Aircraft time: 31,377 hours, 34,977 cycles
System (JASC): 7200 · Engine (Turbine/Turboprop)
Part: Unknown
Condition: Unknown
Location: Nr 1 Engine
Stage of operation: CR
How discovered: O
Nature of condition: R, J
Precautionary procedure: O

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

What was found

CREW REPORTED THAT AT 17,000 FT IN CRUISE, ACFT WENT INTO A PARTIAL NR 1 ENGINE FAILURE. ACFT YAWED LEFT, RECEIVED AN ELEC ON CAP, TORQUE AND NP WENT BELOW 40 PERCENT. AFTER 30-20 SECS OR 50 FULL POWER CAME BACK ONLINE BY ITSELF. LANDED WITHOUT INCIDENT. ERASED NR 1 ENGINE EEC MEMORY IAW JIC 73-23-00 PRO 10010, PERFORMED ENGINE 1 RUN CHECK AND COULD NOT DUPLICATE WRITE UP. ENGINE RUNNING GOOD, NO DEFECTS NOTED. THE ACFT WAS RETURNED TO SERVICE.