Saturday, February 25, 2017

Cessna 170A, N1421D: Accident occurred February 13, 2017 at Phifer Airfield (KEAN), Wheatland, Platte County, Wyoming

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

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

NTSB Identification: GAA17CA141 
14 CFR Part 91: General Aviation
Accident occurred Monday, February 13, 2017 in Wheatland, WY
Probable Cause Approval Date: 04/10/2017
Aircraft: CESSNA 170, registration: N1421D
Injuries: 3 Uninjured.

NTSB investigators used data provided by various entities, including, but not limited to, the Federal Aviation Administration and/or the operator and did not travel in support of this investigation to prepare this aircraft accident report.

The flight instructor in the tailwheel-equipped airplane reported that, during the landing roll, as soon as the tailwheel touched the runway, the airplane veered to the right. He added that he attempted to recover by applying full left rudder, left brake, and right aileron, but the left wing impacted the ground as the airplane exited the runway to the right. Subsequently, the airplane nosed over.

The airplane sustained substantial damage to the right wing lift strut, both wings, and empennage.

The flight instructor reported that skid marks on the runway indicated that the tailwheel was not rolling freely. He added that, during a postaccident inspection, the left brake pedal went to the lower limit on an initial depression, but later held brake pressure during a second depression. He reported that he would not have been able to recover the airplane back to centerline because of the initial brake pressure response.

Further, the flight instructor reported that, about 10 minutes before the accident, the wind was 310° at 13 knots, gusting to 19 knots.

In a followup e-mail, the flight instructor reported that there were no brake or tailwheel anomalies noted during the run-up or departure. He also reported that the student pilot did not make any noticeable control inputs during the landing sequence.

The Federal Aviation Administration inspector reported that, during a postaccident examination of the airplane 2 days after the accident, he “saw nothing abnormal with the brakes,” and he added that the tailwheel was turning. 

The airplane landed on runway 26. An online commercial weather service provider reported that a nearby station, about 2 minutes before the accident, reported wind 010° at 21 mph, gusting to 24 mph.

The passenger in the rear seat provided a video showing the landing roll from the rear seat looking forward. Both the right and left control yokes can be seen, but the rudder pedals cannot be seen. During the beginning of the sequence, the instructor, in the right seat, had his right hand on the control yoke, and the student, in the left seat, had his left hand on the control yoke. Right aileron was applied. During the landing roll, the student added his right hand to the control yoke, and as the airplane veered to the right, left aileron was applied. The camera panned to the left as the right wing lifted and the left wing impacted the ground. The airplane veered left, then nosed over. 

The National Transportation Safety Board determines the probable cause(s) of this accident as follows:
The flight instructor’s incorrect compensation for the gusting crosswind during the landing roll, which resulted in a loss of directional control and runway excursion.

The flight instructor in the tailwheel equipped airplane reported that during the landing roll, as soon as the tailwheel touched the runway, the airplane veered to the right. He added that he attempted to recover by applying full left rudder, left brake, and right aileron, but the left wing impacted the ground as the airplane exited the runway to the right. Subsequently, the airplane nosed over.

The airplane sustained substantial damage to the right wing lift strut, both wings, and empennage.

The flight instructor reported that skid marks on the runway indicated that the tailwheel was not rolling freely. He added that during a postaccident inspection, the left brake pedal went to the lower limit on an initial depression, but later held brake pressure during a second depression. He reported that he would not have been able to recover the airplane back to centerline because of the initial brake pressure response.

Further, the flight instructor reported that about 10 minutes prior to the accident, the wind was 310° true at 13 knots, gusting to 19 knots.

In a follow-up email correspondence, the flight instructor reported that there were no brake or tailwheel anomalies noted during the run-up or departure. He also reported that the student pilot did not make any noticeable control inputs during the landing sequence.

The Federal Aviation Administration (FAA) Inspector reported that during a postaccident inspection of the airplane two days after the accident, he "saw nothing abnormal with the brakes". He further reported that the tailwheel was turning. 

The airplane landed on runway 26. An online commercial weather service provider, reported that a nearby station, about 2 minutes before the accident, reported wind 010° at 21 miles per hour (mph), gusting to 24 mph.

The passenger in the rear seat provided a video showing the landing roll from the rear seat looking forward. Both the right and left control yokes can be seen, the rudder pedals cannot be seen. During the beginning of the sequence the instructor, in the right seat, had his right hand on the control yoke, and the student, in the left seat, had his left hand on the control yoke. Right aileron was applied. During the landing roll, the student added his right hand to the control yoke, and as the airplane veered to the right, left aileron was applied. The camera panned to the left as the right wing lifted and the left wing impacted the ground. The airplane veered left, then nosed over.

Additional Participating Entity: 
Federal Aviation Administration / Flight Standards District Office; Casper, Wyoming 

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

http://registry.faa.gov/N1421D

NTSB Identification: GAA17CA141
14 CFR Part 91: General Aviation
Accident occurred Monday, February 13, 2017 in Wheatland, WY
Aircraft: CESSNA 170, registration: N1421D
Injuries: 3 Uninjured.

NTSB investigators used data provided by various entities, including, but not limited to, the Federal Aviation Administration and/or the operator and did not travel in support of this investigation to prepare this aircraft accident report.

The flight instructor in the tailwheel equipped airplane reported that during the landing roll, as soon as the tailwheel touched the runway, the airplane veered to the right. He added that he attempted to recover by applying full left rudder, left brake, and right aileron, but the left wing impacted the ground as the airplane exited the runway to the right. Subsequently, the airplane nosed over.

The flight instructor in the tailwheel equipped airplane reported that during the landing roll, as soon as the tailwheel touched the runway, the airplane veered to the right. He added that he attempted to recover by applying full left rudder, left brake, and right aileron, but the left wing impacted the ground as the airplane exited the runway to the right. Subsequently, the airplane nosed over.

The airplane sustained substantial damage to the right wing lift strut, both wings, and empennage.

The flight instructor reported that skid marks on the runway indicated that the tailwheel was not rolling freely. He added that during a postaccident inspection, the left brake pedal went to the lower limit on an initial depression, but later held brake pressure during a second depression. He reported that he would not have been able to recover the airplane back to centerline because of the initial brake pressure response.

Further, the flight instructor reported that about 10 minutes prior to the accident, the wind was 310° true at 13 knots, gusting to 19 knots.

In a follow-up email correspondence, the flight instructor reported that there were no brake or tailwheel anomalies noted during the run-up or departure. He also reported that the student pilot did not make any noticeable control inputs during the landing sequence.

The Federal Aviation Administration (FAA) Inspector reported that during a postaccident inspection of the airplane two days after the accident, he "saw nothing abnormal with the brakes". He further reported that the tailwheel was turning. 

The airplane landed on runway 26. An online commercial weather service provider, reported that a nearby station, about 2 minutes before the accident, reported wind 010° at 21 miles per hour (mph), gusting to 24 mph.

The passenger in the rear seat provided a video showing the landing roll from the rear seat looking forward. Both the right and left control yokes can be seen, the rudder pedals cannot be seen. During the beginning of the sequence the instructor, in the right seat, had his right hand on the control yoke, and the student, in the left seat, had his left hand on the control yoke. Right aileron was applied. During the landing roll, the student added his right hand to the control yoke, and as the airplane veered to the right, left aileron was applied. The camera panned to the left as the right wing lifted and the left wing impacted the ground. The airplane veered left, then nosed over.


























AIRCRAFT:   1951 Cessna 170A, N1421D, Serial No. 20134

ENGINE – Continental C-145-2, Serial No. 5939-D-1-2

PROPELLER – Destroyed

APPROXIMATE TOTAL HOURS (estimated TT & TSMO from logbooks or other information)

ENGINE:   439.49 SMOH, 2614.2 TTSN

AIRFRAME:        2614.2              

OTHER EQUIPMENT:      Apollo II Morrow, RT-563, AT150 

DESCRIPTION OF ACCIDENT:  Aircraft exited the runway upon landing causing the aircraft to flip on its back.

DESCRIPTION OF DAMAGES:    Severe damages to wings, engine and fuselage. 

REMARKS:   Inspection of aircraft is highly recommended. 

Read more here:   http://www.avclaims.com/N1421D.htm

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