Saturday, June 6, 2015

Flight Design CTSW, registered to KT Aviation LLC and operated by a private individual, N535CT: Accident occurred June 06, 2015 near Haskell Airport (2K9), Oklahoma

The National Transportation Safety Board not travel to the scene of this accident. 

Additional Participating Entities: 
Federal Aviation Administration / Flight Standards District Office; Oklahoma City, Oklahoma 
BFU Germany; Braunschweig
National Transportation Safety Board; Denver, Colorado 

Aviation Accident Factual Report - National Transportation Safety Board: https://app.ntsb.gov/pdf

Investigation Docket - National Transportation Safety Board: https://dms.ntsb.gov/pubdms

http://registry.faa.gov/N535CT

Location: Haskell, OK
Accident Number: CEN15LA258
Date & Time: 06/06/2015, 1258 CDT
Registration: N535CT
Aircraft: FLIGHT DESIGN GMBH CTSW
Aircraft Damage: Substantial
Defining Event: Loss of engine power (partial)
Injuries: 2 Minor
Flight Conducted Under: Part 91: General Aviation - Personal 

On June 6, 2015, about 1258 central daylight time, a Flight Design CTSW, light-sport airplane, N535CT, preformed a forced landing shortly after departing the Haskell Airport (2K9), Haskell, Oklahoma. The pilot and a passenger received minor injuries, and the airplane was substantially damaged during the off-airport landing. The airplane was registered to KT Aviation LLC, of Wagoner, Oklahoma, and was operated by a private individual as a 14 Code of Federal Regulations Part 91 personal flight. Day visual meteorological conditions prevailed and a flight plan had not been filed. The flight originated from 2K9 and was destined for Hefner-Easley Airport (H68), Wagoner, Oklahoma, at the time of the accident.

The pilot reported that they had flown from H68 to 2K9 earlier in the day. Prior to departing H68, he did a normal preflight inspection, with no discrepancies noted and about 28 gallons of automotive fuel.

After starting engine at 2K9, the pilot noticed the engine gauges were normal, but the charging system had an inadequate output, so he shut down the engine. After consulting a mechanic, he restarted the engine about 1245, with normal engine and charging indications.

During the initial climb from 2K9 about 500 to 600 feet above ground level, the engine starting "sputtering". The engine continued to run but not enough to maintain altitude. The pilot selected a field for the forced landing; various throttle settings failed to restore engine power and the choke was off. The airplane touched down in a muddy field and came to rest inverted.

An on-scene wreckage examination found substantial damage to the airplane's fuselage and damage to the airplane's landing gear. Fuel quality checks of the on-board fuel and the fuel facility were satisfactory. The wreckage was moved to a different location and a post-accident examination of the engine was conducted. Further examination revealed no water or debris were noted in the gascolator, the engine's left and right carburetor float bowls contained clean fuel, the sparkplugs appeared normal, and ignition spark was verified. A test run of the engine was conducted. The engine was started and run at idle before running up to power; no problems were noted during the engine examination or test run.

The airplane's EFIS (Electronic Fight Information System) and EMS (Engine Monitoring System), were removed for extraction of volatile memory (NVM). The memory in the EFIS was corrupted and no useful information could be obtained. The EMS contained an eight-minute recording of engine parameters for the accident flight. A review of the EMS data revealed the engine acceleration to high power, followed by fluctuations and a reduction in the engine rpms.

The NTSB's Vehicle Recorder Division's full factual report is located in the public docket for this case.

The closest weather reporting station was located at the Okmulgee Regional Airport Okmulgee, Oklahoma, about 17 miles southwest from the accident site. At 1255, the station recorded wind from 150 degrees at 3 knots, visibility 10 miles, scattered clouds at 4,700 ft agl, temperature 88° F, dew point 70° F, and an altimeter setting of 30.00 inches of mercury.

The carburetor icing probability chart included in Federal Aviation Administration Special Airworthiness Information Bulletin No. CE-09-35, Carburetor Icing Prevention, indicated that the airplane was operating in an area that was associated with a serious risk of carburetor ice formation at glide power settings.

Pilot Information

Certificate: Sport Pilot
Age: 56
Airplane Rating(s): Single-engine Land
Seat Occupied: Left
Other Aircraft Rating(s): None
Restraint Used: 4-point
Instrument Rating(s): None
Second Pilot Present: Yes
Instructor Rating(s): None
Toxicology Performed: No
Medical Certification: Sport Pilot None
Last FAA Medical Exam:
Occupational Pilot: No
Last Flight Review or Equivalent:
Flight Time:  (Estimated) 303 hours (Total, all aircraft), 254 hours (Total, this make and model), 254 hours (Pilot In Command, all aircraft), 10 hours (Last 90 days, all aircraft), 2 hours (Last 30 days, all aircraft) 

Pilot-Rated Passenger Information

Certificate: Private
Age: 70
Airplane Rating(s): Single-engine Land
Seat Occupied: Right
Other Aircraft Rating(s): None
Restraint Used: 4-point
Instrument Rating(s): None
Second Pilot Present: Yes
Instructor Rating(s): None
Toxicology Performed: No
Medical Certification: Unknown None
Last FAA Medical Exam: 01/01/1980
Occupational Pilot: No
Last Flight Review or Equivalent: 01/01/1980
Flight Time:  (Estimated) 150 hours (Total, all aircraft), 0 hours (Total, this make and model)

Aircraft and Owner/Operator Information

Aircraft Make: FLIGHT DESIGN GMBH
Registration: N535CT
Model/Series: CTSW
Aircraft Category: Airplane
Year of Manufacture: 2007
Amateur Built: No
Airworthiness Certificate: Special Light-Sport
Serial Number: 07-05-01
Landing Gear Type: Unknown
Seats: 2
Date/Type of Last Inspection: 09/14/2014, Condition
Certified Max Gross Wt.: 1320 lbs
Time Since Last Inspection: 30 Hours
Engines: 1 Reciprocating
Airframe Total Time: 543 Hours at time of accident
Engine Manufacturer: ROTAX
ELT:  C126 installed, not activated
Engine Model/Series: 912 ULS
Registered Owner: KT5 AVIATION LLC
Rated Power: 80 hp
Operator: On file
Operating Certificate(s) Held: None 

Meteorological Information and Flight Plan

Conditions at Accident Site: Visual Conditions
Condition of Light: Day
Observation Facility, Elevation: KOKM, 720 ft msl
Distance from Accident Site: 17 Nautical Miles
Observation Time: 1755 UTC
Direction from Accident Site: 234°
Lowest Cloud Condition: Scattered / 4700 ft agl
Visibility:  10 Miles
Lowest Ceiling:
Visibility (RVR):
Wind Speed/Gusts: 3 knots /
Turbulence Type Forecast/Actual: /
Wind Direction: 150°
Turbulence Severity Forecast/Actual: /
Altimeter Setting: 30 inches Hg
Temperature/Dew Point: 31°C / 21°C
Precipitation and Obscuration: No Obscuration; No Precipitation
Departure Point: Haskell, OK (2K9)
Type of Flight Plan Filed: Unknown
Destination: WAGONER, OK (H68)
Type of Clearance: None
Departure Time: 1258 CDT
Type of Airspace: Class G

Airport Information


Airport: HASKELL (2K9)
Runway Surface Type: Asphalt
Airport Elevation: 588 ft
Runway Surface Condition: Dry
Runway Used: 17
IFR Approach: None
Runway Length/Width: 3710 ft / 30 ft
VFR Approach/Landing: Forced Landing

Wreckage and Impact Information

Crew Injuries: 1 Minor
Aircraft Damage: Substantial
Passenger Injuries: 1 Minor
Aircraft Fire: None
Ground Injuries: N/A
Aircraft Explosion: None
Total Injuries: 2 Minor
Latitude, Longitude: 35.834167, -95.665833 (est)

NTSB Identification: CEN15LA258

14 CFR Part 91: General Aviation
Accident occurred Saturday, June 06, 2015 in Haskell, OK
Aircraft: FLIGHT DESIGN GMBH CTSW, registration: N535CT
Injuries: 2 Minor.

This is preliminary information, subject to change, and may contain errors. Any errors in this report will be corrected when the final report has been completed. NTSB investigators may not have traveled in support of this investigation and used data provided by various sources to prepare this aircraft accident report.

On June 6, 2015, about 1258 central daylight time, a Flight Design CTSW, light-sport airplane, N535CT, impacted terrain and was substantially damaged during an off-airport forced landing at Haskell Airport (2K9), Haskell, Oklahoma. The pilot and a passenger sustained minor injuries. The airplane was registered to KT Aviation LLC, of Wagoner, Oklahoma, and was operated by the pilot as a 14 Code of Federal Regulations Part 91 personal flight. Day visual meteorological conditions (VMC) prevailed and a flight plan had not been filed. At the time of the accident the airplane was departing from 2K9, and was destined for Hefner-Easley Airport (H68), Wagoner, Oklahoma.

The pilot reported that during initial climb, while about 500 to 600 feet above ground level (agl), there was a sudden partial loss of engine power. The pilot was on left downwind leg when he executed a forced landing to a muddy field. The airplane came to rest inverted and the impact resulted in the almost complete separation of the empennage. There was a postimpact fuel spill, but there was no postimpact fire. Both occupants exited without assistance.

An on-scene wreckage examination showed adequate fuel was on-board. Fuel quality checks of the on-board fuel and of the fuel facility were satisfactory. The wreckage was moved to a different location and a postaccident test run of the engine was satisfactory. Several avionics components containing non-volatile memory (NVM), including engine performance data, were removed from the wreckage for examination and an extraction of useful data is expected.


The closest official NWS reporting location was about 17 miles southwest from the accident site at Okmulgee Regional Airport (OKM) Okmulgee, Oklahoma. At 1255 the Automated Surface Observation System at OKM reported wind from 150 degrees at 3 knots, visibility 10 miles, scattered clouds at 4,700 feet agl, temperature 31 degrees Celsius (C), dew point 21 degrees C, and an altimeter setting of 30.00 inches of mercury.





HASKELL, Okla. —  A small plane has crashed in a field east of the Haskell Airport.

Two people were on board, and both made it out of the aircraft without sustaining major injuries.

Oklahoma Highway Patrol reports that a plane went down in a field east of the Haskell Airport. 

According to the Federal Aviation Administration (FAA), the aircraft crashed off the field, and it is believed that engine problems caused the crash.

There were two people onboard, and both sustained only minor injuries.

The amount of damage is unknown at this time, and someone from the FAA will be sure to investigate.

Source:  http://www.fox23.com

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