# NTSB LAX00LA210: Hilyard Dragonfly, N22EX, Lancaster, CA, May 31, 2000 - Type: NTSB accident investigation - Classification: Accident · No injuries · Limited investigation · Final report - Date: May 31, 2000, 12:32 local (19:32 UTC) - Place: Lancaster, CA - Coordinates: 34.720718, -118.14923 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=34.7207&lon=-118.1492&mi=10 - Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping) - Highest injury: No injuries - Injuries: 1 uninjured - Status: Completed, report July 30, 2001 - Report: Approved by Office Director - NTSB case key (mKey): 49324 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=LAX00LA210 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/49324/pdf - Page: https://openairdocs.org/ntsb/LAX00LA210 ## Probable cause the pilot's failure to maintain adequate airspeed while attempting to land in gusty wind conditions leading to an inadvertent stall/mush, which resulted in a porpoise and subsequent loss of directional control. ## Sequence of events In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - Loss of control - on ground/water, landing - weather condition - gusts (contributing factor) - airspeed(vref) - not maintained, pilot in command (cause) - stall/mush - inadvertent, pilot in command (cause) - porpoise/pilot-induced oscillation - encountered, pilot in command (cause) - directional control - not maintained, pilot in command (cause) - Nose down, landing - flare/touchdown ## Analysis During a series of high-speed runway taxi tests, a gust of wind caused the airplane to become airborne and veer to the right of centerline. Due to the insufficient remaining runway, the pilot added full power and continued the initial climb out within the traffic pattern. On the landing flare, a gust of wind raised the nose of the airplane reducing the airspeed, and the canard pitch authority became inadequate. The airplane struck the runway with the canard tip mounted wheels, porpoised three times, then departed the runway and came to rest nose down. Recorded winds were from 240 degrees at 12 knots gusting to 14 knots. ## Factual narrative On May 31, 2000, at 1232 hours Pacific daylight time, an experimental Hilyard Dragonfly, N22EX, veered off the runway during landing at the General William J. Fox Airfield, Lancaster, California. The personal flight, operated under the provisions of 14 CFR Part 91, by the owner/builder, sustained substantial damage. The private pilot, the sole occupant, was not injured. Visual meteorological conditions prevailed and no fight plan was filed. The flight originated from the airport at 1130. The automated weather reporting station on the field recorded the winds from 240 degrees at 12 knots with gusts to 14 knots. The pilot stated that he was accomplishing a series of high-speed runway taxi tests to verify operation of a new wheel/brake installation. A gust of wind caused the airplane to become airborne in ground effect and veer to the right of the centerline. Due to the insufficient runway length remaining, full power was added. The plane departed ground effect and climbed out. The pilot entered the traffic pattern and made a normal approach to land. The pilot stated that during the approach for landing the airplane was struck by another gust of wind that reduced his airspeed. He said he was "too high and slow," rendering the canard pitch authority inadequate. The airplane stuck the runway with the canard tip mounted wheels, and the airplane porpoised down the runway three times. He added power after the first bounce to restore airspeed prior to the occurrence of the second bounce. After the second bounce, he reduced the airspeed. On the third bounce the airplane did not respond to rudder inputs, departed the runway, and came to rest on its nose between the runway and the taxiway. ## Aircraft - Registration: N22EX (not matched to a registry record) - Reported make and model: Hilyard DRAGONFLY - Category: Airplane, amateur-built - Serial number: 098 - Airframe hours: 144 - Engines: Mazda 13B 60 horsepower reciprocating - Damage: Substantial damage - Flight: Personal, Part 91 - Registered owner: Roger C. Hilyard - Airworthiness certificate: Special, Experimental (Special) - Last inspection: Annual, October 21, 1999, 11 hours before - Departed: WJF - Airport: WJF, General Wm J Fox Airfield, runway 24, 7,201 × 150 ft, asphalt ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 61; private; airplane ratings: single-engine land; medical: class 3; seat: left; flight hours: 220 total, 60 in this make and model, 180 as pilot in command ## Weather - Conditions: Visual (VMC), Day - Wind: 240° at 12 knots, gusting 14 - Visibility: 40 statute miles - Lowest ceiling: none - Temperature: 187 °F, dew point 102 °F - Altimeter: 29.00 inHg - Observed at: WJF From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.