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ASN Wikibase Occurrence # 197339
Last updated: 11 September 2019
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Date:11-AUG-2017
Time:09:17
Type:Silhouette image of generic C172 model; specific model in this crash may look slightly different
Cessna 172M Skyhawk
Owner/operator:Arrow Aviation LLC
Registration: N1727V
C/n / msn: 17263727
Fatalities:Fatalities: 1 / Occupants: 3
Other fatalities:0
Aircraft damage: Substantial
Category:Accident
Location:New Milford-Candlelight Farms Airport, CT (11N) -   United States of America
Phase: Initial climb
Nature:Training
Departure airport:Danbury, CT (DXR)
Destination airport:Danbury, CT (DXR)
Investigating agency: NTSB
Narrative:
The student pilot, who had 15 hours of flight experience, was performing an instructional flight with her flight instructor and a passenger. According to GPS data, the airplane landed on and then took off from a grass airstrip, climbed about 150 ft, then collided with terrain about 1,000 ft past the end of the runway. There were no known eyewitnesses, and the student pilot and passenger did not recall the accident due to their injuries. The flight instructor was fatally injured.

An examination of the wreckage did not reveal any evidence of a preaccident mechanical malfunction or anomaly. An examination of the flight controls revealed that the wing flaps were in the fully extended (40) position at impact. The airplane's operating checklist stated that normal and obstacle clearance takeoffs are performed with wing flaps up, and flap settings greater than 10 are not recommended at any time for takeoff. Upon landing on the grass runway, the flaps should have been retracted as part of the after-landing checklist, then confirmed up as part of the before takeoff and takeoff checklists. It is likely that the flap setting at the time of takeoff resulted in an aerodynamic stall and loss of control during the initial climb.

It could not be determined who was at the controls at the time of the takeoff and loss of airplane control; however, the flight instructor, as pilot-in-command, was responsible for the operation and safety of the flight and should have ensured that the flaps were retracted before takeoff. He also should have anticipated and corrected any significant errors made by the student.

Probable Cause: The flight instructor's failure to ensure that the wing flaps were properly configured for takeoff, which resulted in an aerodynamic stall and loss of control during the initial climb.

Sources:

NTSB: https://www.ntsb.gov/_layouts/ntsb.aviation/brief.aspx?ev_id=20170811X12252&key=1
FAA register: http://registry.faa.gov/aircraftinquiry/NNum_Results.aspx?NNumbertxt=1727V

Accident investigation:
cover
  
Investigating agency: NTSB
Status: Investigation completed
Duration: 1 year
Download report: Final report


Images:



Photo: NTSB

Revision history:

Date/timeContributorUpdates
11-Aug-2017 17:25 gerard57 Added
11-Aug-2017 17:27 harro Updated [Aircraft type, Registration, Cn, Operator, Location, Departure airport, Source]
11-Aug-2017 17:31 harro Updated [Time, Location, Phase, Destination airport, Embed code]
11-Aug-2017 17:34 harro Updated [Nature, Embed code, Photo, ]
04-Sep-2017 16:18 Iceman 29 Updated [Source, Narrative]
22-Aug-2018 10:37 ASN Update Bot Updated [Time, Registration, Operator, Nature, Departure airport, Destination airport, Source, Embed code, Damage, Narrative]
22-Aug-2018 11:06 harro Updated [Operator, Phase, Source, Embed code, Narrative, Photo, ]

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