# NTSB MIA05LA058: Interplane Sro Skyboy, N942WW, Zephyrhills, FL, February 16, 2005 - Type: NTSB accident investigation - Classification: Accident · Serious injuries · Limited investigation · Final report - Date: February 16, 2005, 10:00 local (15:00 UTC) - Place: Zephyrhills, FL - Coordinates: 28.228055, -82.15583 - Nearby events: https://openairdocs.org/map.md?lat=28.2281&lon=-82.1558&mi=10 - Phase of flight: [Initial climb](https://openairdocs.org/ntsb-phases/350) (OpenAirDocs' grouping) - Highest injury: Serious injuries - Injuries: 2 serious - Status: Completed, report June 27, 2007 - Report: Approved by Office Director - Parties: FAA FSDO - NTSB case key (mKey): 61029 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MIA05LA058 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/61029/pdf - Page: https://openairdocs.org/ntsb/MIA05LA058 ## Probable cause The instructors in-flight loss of control due to the flight controls being jammed for undetermined reasons. ## Sequence of events In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - Loss of control - in flight, takeoff - initial climb - flight control system - jammed - reason for occurrence undetermined (cause) - In flight collision with terrain/water, descent - uncontrolled - terrain condition - ground ## Analysis The flight instructor stated that he and his student were taking off from runway 22, and the experimental airplane had climbed to about 50 feet altitude when the flight controls stuck in the left position and the airplane descended in a spiral, impacting the ground. He stated that the engine was developing full power the whole time during the flight and that he did not stall the aircraft. An FAA inspector who responded to the accident site, said that witnesses told him they saw the airplane descend in a left spiral and that after impacting the ground the engine continued operating and had to be secured in order to remove the occupants. According to the inspector, the aircraft was destroyed and the extent of the damage precluded a determination of any flight control related anomalies. ## Factual narrative On February 16, 2005, about 1000 eastern standard time, an Interplane SRO Skyboy experimental airplane, N942WW, operated as a Title 14 CFR Part 91 instructional flight, crashed while taking off at Zephyrhills, Florida. Visual meteorological conditions prevailed, and no flight plan was filed. The flight instructor and student received serious injuries, and the aircraft was destroyed. The flight was originating at the time of the accident. The instructor did not submit a Pilot/Operator Accident/Incident report form to the NTSB. He stated that he is an Aero Sports certified ultralight flight instructor and he and his student were on an instructional flight when the accident occurred. He stated that they were taking off from runway 22 and the aircraft had climbed to about 50 feet altitude, when the flight controls stuck to the left and the airplane descended in a spiral, impacting the ground. He stated that the engine was been developing full power, and he could not apply any flight control input to correct the descending spiral. He said he remembered checking to see if the student had been on the controls while he was trying to arrest the descent, but the student was not on the controls, nor had he stalled the aircraft during the climb. According to the pilot the airplane was a "pusher" with the engine and propeller in the rear. When the airplane impacted the ground the fuselage became mangled from the nose all the way aft to the engine. An FAA inspector who responded to the accident site said that witnesses told him they saw the airplane descend in a left spiral and that after impacting the ground the engine continued operating and had to be secured in order to remove the occupants. According to the inspector the airplane was destroyed and the extent of the damage precluded him from determining if there were any evidence of flight control related anomalies. ## Aircraft - Registration: [N942WW](https://openairdocs.org/deregistered/N942WW-2013-08-27), registration cancelled 2013-08-27, S/N 39-2001 (OpenAirDocs) - Reported make and model: Interplane SRO Skyboy - Registry model: [Interplane S R O SKYBOY](https://openairdocs.org/model/interplane-s-r-o-skyboy) (registry code 059001L) (OpenAirDocs) - Category: Airplane - Serial number: 39-2001 - Engines: Rotax 912 80 horsepower reciprocating - Damage: Substantial damage - Flight: Instructional, Part 91 - Registered owner: Dale Hellemn - Airworthiness certificate: Special, Experimental (Special) - Departed: ZPH, Zephyr Hills, FL - Destination: ZPH - Airport: ZPH, Zephyrhills Municipal, runway 22, 5,001 × 100 ft, asphalt ## Flight crew As NTSB recorded them. NTSB leaves out names. - Flight instructor; age 74; injuries: serious; last flight review July 1, 2005; seat: left; flight hours: 650 total ## Weather - Conditions: Visual (VMC), Day - Wind: 5 knots - Visibility: 8 statute miles - Lowest ceiling: none - Temperature: 66 °F, dew point 61 °F - Altimeter: 30.11 inHg - Observed at: TPA, 25 nm away ## FAA reports on this event (1) The FAA's own accident and incident reports, matched to the aircraft by N-number and date (OpenAirDocs). - [Accident 20050216005689A](https://openairdocs.org/incident/20050216005689A), Feb 16, 2005: Amtr SKYBOY, Zephyrhills, FL, Destroyed. (-23) On February 16, 2005, at 1006 EDT, according to eyewitnesses, an interplane Skyboy ultra-light aircraft climbed to approximately 50 feet then made a… 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.