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ASN Wikibase Occurrence # 33303
Last updated: 20 August 2020
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Date:04-NOV-1998
Time:10:45 PST
Type:Silhouette image of generic PA46 model; specific model in this crash may look slightly different
Piper PA-46-350P Malibu Mirage
Owner/operator:Lakala Aviation Inc
Registration: N50JG
C/n / msn: 4622198
Fatalities:Fatalities: 0 / Occupants: 3
Other fatalities:0
Aircraft damage: Written off (damaged beyond repair)
Location:Mammoth Yosemite Airport, 7 miles E of Mammoth Lakes, California -   United States of America
Phase: Take off
Nature:Private
Departure airport:Mammoth Yosemite Airport (MMH/KMMH)
Destination airport:Las Vegas Municipal Airport (LVS/KLVS)
Narrative:
Witnesses said the aircraft took off prematurely and over rotated to a nose high attitude. Shortly thereafter, the aircraft hit the ground tail first then the nose. The aircraft veered off the side runway and came to rest on a taxiway. The winds were reported as calm at the time.

The pilot told the witness that he stalled on takeoff. Immediately after the accident, the position of the elevator trim tab and the cockpit elevator trim indicator were found in the full nose up trim positions. The pilot reported that the aircraft had a dead battery and required external power for the start. During this process, the autopilot cycled twice. The pilot stated that he performed a normal run up and trimmed the aircraft for takeoff. He said that at 62 knots the autopilot ran the pitch trim to the full nose up position and the aircraft pitched prematurely to a nose high attitude and lifted off the ground. The pilot then retracted the landing gear.

The left wing dropped and the airplane settled back to the ground. According to the auto pilot manufacturer, the pitch servo capstans are designed with a clutch that will slip at 25 pounds of control wheel force. According to flight test data supplied by Piper, the control wheel force required to hold 62-knot speed at full trim tab deflection would be less than 40 pounds.

Sources:

1. NTSB: LAX99LA023
2. FAA: http://registry.faa.gov/aircraftinquiry/NNum_Results.aspx?NNumbertxt=50JG


Revision history:

Date/timeContributorUpdates
27-Sep-2008 01:00 ASN archive Added
10-Feb-2015 18:35 Dr. John Smith Updated [Time, Operator, Total fatalities, Total occupants, Other fatalities, Location, Country, Phase, Nature, Departure airport, Destination airport, Source, Damage, Narrative]

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