Accident Piper PA-46-500TP Malibu Meridian N1968W, Monday 19 January 2004
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Date:Monday 19 January 2004
Type:Silhouette image of generic P46T model; specific model in this crash may look slightly different    
Piper PA-46-500TP Malibu Meridian
Registration: N1968W
MSN: 4697115
Year of manufacture:2001
Total airframe hrs:182 hours
Engine model:Pratt & Whitney Canada PT6-42A
Fatalities:Fatalities: 0 / Occupants: 1
Other fatalities:0
Aircraft damage: Substantial
Location:Minneapolis, MN -   United States of America
Phase: Landing
Departure airport:Minneapolis, MN (FCM)
Destination airport:Sioux Falls, SD (FSD)
Investigating agency: NTSB
Confidence Rating: Accident investigation report completed and information captured
The airplane was substantially damaged during a gear up forced landing after takeoff. The pilot reported that everything was normal during the preflight and engine run-up. The pilot reported that after being cleared for takeoff, he advanced the throttle to 1,270 pounds of torque before releasing the brakes and everything was normal. He stated that upon reaching 85 knots he rotated, achieved a positive rate of climb, and retracted the landing gear. The pilot continued, "Just after the wheels were up the engine shuddered with a very substantial loss of power. It felt like a car that was hitting on half its cylinders." He stated he brought the power back to idle and focused on getting the airplane back on the runway. The pilot reported that after the airplane touched down he "pulled the emergency fuel cutoff." The airplane traveled straight ahead, crossed a taxiway, and came to rest about 100 yards past the taxiway. The pilot then shut off the battery and exited the airplane via the rear door. The airplane had a total of 183 hours since new. The pilot reported having a propeller overspeed warning during the flight previous of the accident flight. The tach generator was replaced after this incident. The tach generator that was removed was tested and no discrepancies were found. A tear down inspection on the engine failed to reveal any malfunctions/failures which would have resulted in the loss of power. Both the primary and overspeed propeller governors were removed from the engine and tested. A visual inspection of the primary governor revealed lockwire found on the airbleed system reset-eccentric screw was non-standard for Woodward and the torque sealant had been removed. A visual inspection of the overspeed governor revealed the inside of the speed setting hex screw did not contain any torque sealant. The sealant on the outside threads of the screw was cracked near the base of the screw and the housing. Bench testing of both the primary and overspeed governors revealed the overspeed governor was set to a lower rpm than the primary governor. Therefore, the overspeed governor would have been controlling the system. Manufacturing flight test documents indicate four occasions when the maximum reverse rpm was adjusted. Flight tests conducted with the governors calibrated to the settings at the time of the accident were conducted. Data from the flight tests indicate the propeller rpm was limited between 96-97% and that changes in the rpm stabilized within seconds.

Probable Cause: A loss of engine power for undetermined reasons.

Accident investigation:
Investigating agency: NTSB
Report number: CHI04LA060
Status: Investigation completed
Download report: Final report




Revision history:

03-Mar-2015 21:06 Noro Added
21-Dec-2016 19:28 ASN Update Bot Updated [Time, Damage, Category, Investigating agency]
07-Dec-2017 17:35 ASN Update Bot Updated [Other fatalities, Departure airport, Destination airport, Source, Narrative]

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