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Control lock contributes to Cessna 172 crash

By NTSB · August 11, 2015 ·

The pilot stated that in preparation for a night flight from Portsmouth, N.H., he flew earlier that same evening. He inspected the Cessna 172S and noted the control lock was not installed in the control column. While searching for the control lock he located a “straight pin” in a seatback pocket and installed it.

He left the airport and returned later than evening, and performed a preflight inspection of the airplane, removing the straight pin. He departed and flew to his destination airport where he landed uneventfully.

After landing he went to an FBO and filed a flight plan for the return flight, then returned to the airplane and started the engine. He taxied to the run-up area where he performed the before takeoff checklist, but did not check that the flight controls were free and clear for fear of having his tablet knocked off the yoke mount. He advised the controller that he was ready for departure and was cleared for takeoff.

He taxied onto the runway and applied power, noting the airspeed increased normally. After the airplane rotated it climbed to an altitude of about 3 feet and settled back down on the runway and bounced. Confused as to what was occurring, he added nose up trim to assist in the climb.

At this point the airplane climbed to about 10 feet, then the nose pitched downward and the nose wheel hit the runway. After coming to a stop he switched the headlamp he was wearing from red to white and noticed the pin used to secure the flight controls was in the control lock hole. He removed the pin and retained possession of it.

Post-accident inspection of the airplane by an FAA inspector revealed substantial damage to the firewall.

The NTSB determined the probable cause as the pilot’s inadequate preflight inspection, resulting in his failure to remove the pin he used to lock the flight controls in place of the approved control lock.

NTSB Identification: ERA13CA350

This August 2013 accident report is provided by the National Transportation Safety Board. Published as an educational tool, it is intended to help pilots learn from the misfortunes of others.

About NTSB

The National Transportation Safety Board is an independent federal agency charged by Congress with investigating every civil aviation accident in the United States and significant events in the other modes of transportation, including railroad, transit, highway, marine, pipeline, and commercial space. It determines the probable causes of accidents and issues safety recommendations aimed at preventing future occurrences.

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Comments

  1. Eric Ziegler says

    August 12, 2015 at 3:00 pm

    Considering our very BASIC training as Private Pilots, this has to be the stupidest series of events I’ve yet read here. Straight pins? Keeping a tablet on a yoke in lieu of checking control surfaces? RUN, FORREST, RUN!! [But don’t fly].

  2. John says

    August 12, 2015 at 6:25 am

    I wonder what other short cuts this pilot takes? A pin instead of the visible control lock. No pre-takeoff control checks??? Wow. So what’s the message? Sloppy isn’t “stupid”. It’s negligent.

  3. TomC says

    August 12, 2015 at 5:33 am

    In the words of the great philosopher, Forrest Gump, “Stupid is as stupid does.”

    • Richard Warner says

      August 12, 2015 at 5:50 am

      You took the words right out of my mouth, TomC

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