Service difficulty report · Autofeather Sys · Aerosp ATR72212

Difficulty date
June 20, 2011
Submitted
July 6, 2011
Operation
Air carrier
Aircraft
N420AT
Make and model
Aerosp ATR72212
Aircraft serial
420
Aircraft time
30,386 hours, 32,780 cycles
Part
Autofeather Sys
Condition
Malfunctioned
Stage of operation
AP
How discovered
O
Nature of condition
F
Precautionary procedure
O

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

What was found

DURING APPROACH, AT FLIGHT LEVEL 200 THE CREW REPORTED THE RT ENGINE WENT TO UNCOMMANDED FEATHER, BOTH PROPS /CONDITION LEVERS MAX RPM ,TORQUE SHOWED 0, NP 70 , ITT 400 ISH. THE ACFT WENT THROUGH ANOTHER ACFT’S WAKE TURBULANCE ABOUT 600 '. ACFT LANDED WITHOUT INCIDENT & REMOVED FROM SERVICE. R & R RT THE HIGH ENGINE AUTO FEATHER UNIT IAW MM 72-01-10. THE OPS CHECKED GOOD IAW JIC 72-00-00-OPT-10000 AND 61-00-00-OPT-10000. THE ACFT WAS RETURNED TO SERVICE.

More about the Aerosp ATR 72-212