Additional Participating Entity:
Federal Aviation Administration / Flight Standards District Office; Oklahoma City, Oklahoma
Aviation Accident Final Report - National Transportation Safety Board: https://app.ntsb.gov/pdf
Investigation Docket - National Transportation Safety Board: https://dms.ntsb.gov/pubdms
Aviation Accident Data Summary - National Transportation Safety Board: https://app.ntsb.gov/pdf
Harbor Aviation LLC: http://registry.faa.gov/N8619G
NTSB Identification: CEN16LA184
14 CFR Part 91: General Aviation
Accident occurred Sunday, May 01, 2016 in Ponca City, OK
Aircraft: CESSNA 150F, registration: N8619G
Injuries: 1 Serious, 1 Uninjured.
NTSB investigators may not have traveled in support of this investigation and used data provided by various sources to prepare this aircraft accident report.
The private pilot stated that, during the landing flare at the conclusion of a local flight, the airplane's nose "shot up drastically." The pilot "gently" pressed forward on the controls to lower the nose, and the airplane pitched down and impacted the runway. Examination of the airplane revealed that a bolt that attached the left elevator to the control system was not installed, and the FAA inspector reported that the bolt was found undamaged inside the elevator tip. According to the pilot, maintenance personnel had recently removed the left elevator, and it is likely that they failed to properly secure the bolt when they reinstalled the elevator.
The National Transportation Safety Board determines the probable cause(s) of this accident as follows:
Maintenance personnel's improper installation of the elevator bolt, which resulted in a loss of elevator control during landing.
The pilot stated that he performed a "full" preflight inspection of the airplane prior to departing for a pleasure flight. The flight returned without incident for an approach for landing to the airport. During landing flare on runway 35 and about 1-2 feet above runway, the airplane "shot up drastically". The airplane climbed about 10-20 feet, the pilot "gently" applied forward control pressure on the control yoke, and the airplane "instantly" pitched down and impacted the runway. The pilot stated that as he waited for an ambulance, he saw the left elevator was separated from the horizontal stabilizer.
An airplane maintenance record entry dated November 9, 2015, shows that an annual inspection had been performed and that the bearing in the elevator bearing crank assembly was "reset" by an airframe and powerplant mechanic with inspection authorization. The airplane accumulated about 25 hours of flight time after the annual inspection.
Post-accident examination of the airplane by a Federal Aviation Administration (FAA) inspector revealed that a bolt that links the left elevator to the control system was missing. The bolt was found inside the left elevator tip. The FAA Inspector reported that there was an improper reinstallation of the elevator, which resulted in it coming loose.
14 CFR Part 91: General Aviation
Accident occurred Sunday, May 01, 2016 in Ponca City, OK
Aircraft: CESSNA 150F, registration: N8619G
Injuries: 1 Serious.
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 May 1, 2016, at 1135, a Cessna 150F, N8619G, experienced a hard landing and impacted the runway surface at Ponca City Regional Airport, Ponca City, Oklahoma. The pilot was seriously injured and the airplane sustained substantial damage to the firewall. The airplane was operated under 14 Code of Federal Regulations Part 91 as a personal flight that was not operating on a flight plan. Visual meteorological conditions prevailed at the time of the accident.
A post accident examination found the left elevator bolt separated.
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