Loss of control Accident Cirrus SR22 N287SR,
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ASN Wikibase Occurrence # 22668
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Date:Friday 29 August 2008
Type:Silhouette image of generic SR22 model; specific model in this crash may look slightly different    
Cirrus SR22
Registration: N287SR
MSN: 2788
Year of manufacture:2007
Total airframe hrs:190 hours
Engine model:Continental IO-550N
Fatalities:Fatalities: 0 / Occupants: 4
Aircraft damage: Substantial
Location:Gerlach, Nevada -   United States of America
Phase: Take off
Departure airport:Gerlach, NV
Destination airport:Saint George, UT (SGU)
Investigating agency: NTSB
Confidence Rating: Accident investigation report completed and information captured
The pilot reported that during takeoff from the dirt airstrip, upon reaching an airspeed of about 60 knots, the airplane nosed up, became airborne, and then stalled. He attempted to recover; however, the airplane impacted the ground tail first. Data recorded by the airplane's primary flight display (PFD) indicated that the airplane lifted off at about 61 knots, pitched up from about 9 to 18 degrees nose up, rolled from about 0 to 20 degrees left bank, and stalled about 20 feet above the ground. The PFD data indicated that the airplane impacted in a wings-level, slightly nose-high attitude. The main landing gear separated from the airplane and the tail section partially separated from the fuselage. The pilot attributed the accident to a previously known and repetitive malfunction of the airplane's electric pitch trim. The airplane's pitch trim system uses a spring cartridge attached to the elevator bell crank and activated by an electric motor. When activated by a switch on the control yoke, the trim motor moves the spring cartridge causing the elevator to move the elevator to a new trimmed position. Postaccident examination of the trim mechanism in the tail revealed that it was in a neutral (takeoff) position, not a full nose up position as would be expected if the trim system had malfunctioned. The elevator moved freely through its entire range of motion with no indication of jamming. There did not appear to be any impact damage to the trim mechanism or to its mounting structure. The trim motor electrical connector was found disconnected. It could not be determined whether the connector was pulled apart during the impact sequence or had been intentionally disconnected. Using a battery for power, the trim motor was tested and found to be capable of driving the trim through its full range of motion from the full nose-up to the full nose-down position. The Pilot's Operating Handbook for the airplane states that "it is possible to easily override full trim or autopilot inputs by using normal control inputs."
Probable Cause: The pilot's failure to maintain aircraft control during an uncommanded pitch-up during the takeoff.

Accident investigation:
Investigating agency: NTSB
Report number: LAX08LA288
Status: Investigation completed
Duration: 11 months
Download report: Final report




Revision history:

28-Apr-2009 21:37 slowkid Updated
21-Dec-2016 19:14 ASN Update Bot Updated [Time, Damage, Category, Investigating agency]
21-Dec-2016 19:16 ASN Update Bot Updated [Time, Damage, Category, Investigating agency]
21-Dec-2016 19:20 ASN Update Bot Updated [Time, Damage, Category, Investigating agency]
03-Dec-2017 11:56 ASN Update Bot Updated [Operator, Other fatalities, Departure airport, Destination airport, Source, Narrative]

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