No fatalities

Takeoff Attempt with Gust Lock Installed (N738UA)

Concord, CA, US

On December 17, 1999, a Cessna 172N (registration N738UA) operated by Caesar J. Bertagna was involved in an aviation accident near Concord, CA. No fatalities were reported. Investigators recorded the probable cause as: the pilot's failure to use a checklist and remove the control gust lock. This summary draws on records from the U.S. National Transportation Safety Board (NTSB) historical archive; 1 related events involving the same aircraft type or operator are linked below.

Sourcesthe U.S. National Transportation Safety Board (NTSB) historical archivePrimary reportUpdated 2026-07-04Data APIEditorial standards

A pilot attempted takeoff with the gust lock installed, then reduced throttle, crossed an airport fence, and landed on a road. The pilot admitted to forgetting to remove the lock.

Incident Overview

A pilot holding an airline transport rating and having accrued 40,000 flight hours attempted a takeoff without removing the control gust lock. During the takeoff roll, the pilot recognized the oversight, reduced engine power, and the aircraft departed the airport by crossing the fence. It landed on a road.

Pilot's Admission

In a statement to an FAA inspector present at the scene, the pilot said he had forgotten to remove the gust lock. To his insurance company, he reported that he failed to remove the control lock well into the takeoff roll.

Report Submission

The pilot submitted a partial Aircraft Accident Report. The report lacked any accompanying statement from the pilot.

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Frequently asked questions

What happened in the 17 Dec 1999 Cessna 172N accident near Concord, CA?

A pilot attempted takeoff with the gust lock installed, then reduced throttle, crossed an airport fence, and landed on a road. The pilot admitted to forgetting to remove the lock.

Were there any fatalities in the 17 Dec 1999 Cessna 172N accident?

No fatalities were recorded in this accident.

What aircraft was involved and where did it happen?

The accident on 17 Dec 1999 involved a Cessna 172N, registration N738UA, operated by Caesar J. Bertagna, at Concord, CA.

What was the probable cause of the accident?

the pilot's failure to use a checklist and remove the control gust lock.

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20001212X20265. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.