Monday, August 15, 2016

Cessna 172K Skyhawk, N78242: Accident occurred August 14, 2016 at Elton Hensley Memorial Airport (KFTT), Callaway County, Missouri

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

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

http://registry.faa.gov/N78242


FAA Flight Standards District Office: FAA St. Louis FSDO-62


NTSB Identification: GAA16CA473 
14 CFR Part 91: General Aviation
Accident occurred Sunday, August 14, 2016 in Fulton, MO
Probable Cause Approval Date: 01/18/2017
Aircraft: CESSNA 172, registration: N78242
Injuries: 1 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 pilot reported that during the initial touchdown he “got a bad bounce.” On the third bounce the nose wheel “gave way and the propeller impacted the ground.” 

The airplane sustained substantial damage to the firewall. 

The pilot reported no preaccident mechanical malfunctions or failures with the airplane that would have precluded normal operation.

The Federal Aviation Administration has published the Airplane Flying Handbook FAA-H-8083-3B (2016). This handbook discusses porpoising and states in part:

In a bounced landing that is improperly recovered, the airplane comes in nose first initiating a series of motions that imitate the jumps and dives of a porpoise. The problem is improper airplane attitude at touchdown, sometimes caused by inattention, not knowing where the ground is, miss-trimming or forcing the airplane onto the runway.

Ground effect decreases elevator control effectiveness and increases the effort required to raise the nose. Not enough elevator or stabilator trim can result in a nose low contact with the runway and a porpoise develops.

Porpoising can also be caused by improper airspeed control. Usually, if an approach is too fast, the airplane floats and the pilot tries to force it on the runway when the airplane still wants to fly. A gust of wind, a bump in the runway, or even a slight tug on the control wheel will send the air plane aloft again. 

The National Transportation Safety Board determines the probable cause(s) of this accident as follows:
The pilot’s improper landing flare and subsequent improper recovery from a bounced landing, which resulted in the airplane porpoising. 

NTSB Identification: GAA16CA473
14 CFR Part 91: General Aviation
Accident occurred Sunday, August 14, 2016 in Fulton, MO
Aircraft: CESSNA 172, registration: N78242
Injuries: 1 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 pilot reported that during the initial touchdown he "got a bad bounce". On the third bounce the nose wheel "gave way and the propeller impacted the ground".

The airplane sustained substantial damage to the firewall. 

The pilot reported no preaccident mechanical malfunctions or failures with the airplane that would have precluded normal operation.

The Federal Aviation Administration has published the Airplane Flying Handbook FAA-H-8083-3B (2016). This handbook discusses porpoising and states in part:

In a bounced landing that is improperly recovered, the airplane comes in nose first initiating a series of motions that imitate the jumps and dives of a porpoise. The problem is improper airplane attitude at touchdown, sometimes caused by inattention, not knowing where the ground is, miss-trimming or forcing the airplane onto the runway.

Ground effect decreases elevator control effectiveness and increases the effort required to raise the nose. Not enough elevator or stabilator trim can result in a nose low contact with the runway and a porpoise develops.

Porpoising can also be caused by improper airspeed control. Usually, if an approach is too fast, the airplane floats and the pilot tries to force it on the runway when the airplane still wants to fly. A gust of wind, a bump in the runway, or even a slight tug on the control wheel will send the airplane aloft again.

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