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ASN Wikibase Occurrence # 114
Last updated: 5 December 2021
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Date:29-DEC-2007
Time:11:40
Type:Silhouette image of generic RAF2 model; specific model in this crash may look slightly different
RAF 2000 GTX
Owner/operator:Private
Registration: N136DG
MSN: H2-03-14-563
Fatalities:Fatalities: 2 / Occupants: 2
Aircraft damage: Written off (damaged beyond repair)
Category:Accident
Location:Near Crowley, Texas at 32.5572 N, 97.4855 W -   United States of America
Phase: En route
Nature:Private
Departure airport:Fort Worth, TX (FWS)
Destination airport:
Investigating agency: NTSB
Narrative:
The amateur built gyrocopter was destroyed following a loss of rotor rpm and subsequent collision with terrain while maneuvering. A witness initially heard a "loud pop" and then observed the gyrocopter, approximately 50-feet above the ground, descending at a nose down angle of approximately 60-degrees. The gyrocopter impacted the ground approximately 100-feet from where the witness was located. The witness further reported that before the impact, the rotor blades appeared to be spinning "slowly." Inspection of the wreckage revealed that the rotor blades had struck the rudder twice. In addition, the rotor hub and rotor blades exhibited evidence of upward coning, consistent with the rotor blades having lost rigidity due to low rpm. Inspection of the wreckage did not reveal any mechanical failure/malfunction which would have resulted in the loss of control.
Probable Cause: The pilot's failure to maintain rotor rpm while maneuvering, which resulted in a loss of rotor blade rigidity.

Sources:

NTSB: https://www.ntsb.gov/_layouts/ntsb.aviation/brief.aspx?ev_id=20080103X00010&key=1
FAA register: 2. FAA: http://registry.faa.gov/aircraftinquiry/NNum_Results.aspx?NNumbertxt=136DG

Location


Revision history:

Date/timeContributorUpdates
21-Jan-2008 04:31 JINX Added
21-Dec-2016 19:13 ASN Update Bot Updated [Time, Damage, Category, Investigating agency]
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]
06-Jan-2017 14:59 Dr. John Smith Updated [Time, Operator, Location, Phase, Departure airport, Destination airport, Source, Narrative]
04-Dec-2017 19:03 ASN Update Bot Updated [Time, Operator, Other fatalities, Departure airport, Destination airport, Source, Narrative, Plane category]

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