SDR ASOA04489

Service difficulty report · Actuator · Aerosp ATR72

Difficulty date
July 6, 2004
Submitted
August 16, 2004
Operation
Air carrier
Aircraft
N643AS
Make and model
Aerosp ATR72
Aircraft serial
413
Part
Actuator
Condition
Leaking
Location
Lt Wing Te Flap
Stage of operation
CL
How discovered
O
Nature of condition
G, J
Precautionary procedure
O

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

What was found

FLT 4145 - DURING CLIMB-OUT FROM VPS-ATL, AT APPROXIMATELY 6,000 TO 7,000 FEET THE CREW RECEIVED A LOW LEVEL MESSAGE ON THE BLUE HYDRAULIC SYSTEM. THE CREW FOLLOWED THE QRH AND SHUTOFF THE BLUE PUMPS. APPROXIMATELY FORTY MILES FROM ATL, A LOW LEVEL MESSAGE ON THE GREEN HYDRAULIC SYSTEM WAS RECEIVED. THE CREW FOLLOWED THE QUH AND SHUT OFF THE GREEN PUMP EXPERIENCING A TOTAL HYDRAULIC FAILURE. AN EMERGENCY WAS DECLARED AND THE AIRCRAFT LANDED SAFELY IN ATL. MAINTENANCE REMOVED AND REPLACED THE LEFT INBOARD FLAP ACTUATOR. MAINTENANCE ALSO CYCLED THE FLAPS FIFTEEN TIMES WITHOUT ANY DEFECTS NOTED. OPERATIONAL CHECKS GOOD. AIRCRAFT OK FOR SERVICE. (M)