No fatalities

26 Nov 2010: GRUMMAN AMERICAN AVN. CORP. AA-5B — Anna Longwell — Coalinga, CA

Coalinga, CA, United States

On 26 Nov 2010, a GRUMMAN AMERICAN AVN. CORP. AA-5B operated by Anna Longwell was involved in an aviation accident near Coalinga, CA. No fatalities were reported. Investigators recorded the probable cause as: The pilot's failure to remove the gust lock prior to takeoff. This summary draws on records from NTSB; 12 related events involving the same aircraft type or operator are linked below.

SourcesNTSBPrimary reportUpdated 1778583330Data APIEditorial standards

A pilot stated she did not conduct a control check before takeoff. At 70 mph, she realized the gust lock was still installed, attempted removal, reduced throttle, but the airplane went off the runway, separating the nose gear and causing substantial damage.

Incident Overview

According to a written statement submitted by the pilot, the accident occurred during the departure roll when the airplane reached 70 miles per hour. The pilot reported that she had not conducted a control check prior to initiating takeoff. As the airplane accelerated, she realized that the gust lock was still installed. She attempted to remove the gust lock but was unsuccessful. Subsequently, she reduced the throttle in an effort to stop the airplane.

Sequence of Events

The airplane continued beyond the end of the runway and entered a dirt field, where it came to rest. During the excursion, the nose gear separated from the aircraft. The airplane sustained substantial damage, specifically to the firewall and the right wing.

Damage Assessment

Post-accident examination revealed that the firewall and right wing were substantially damaged. The extent of damage to other components was not specified in the pilot's statement.

Pilot Actions

The pilot's statement indicated that no control check was performed before takeoff. The gust lock was identified as being installed during the rollout when the aircraft had already reached 70 mph. The pilot's attempts to remove the gust lock did not succeed, and throttle reduction was insufficient to stop the aircraft within the runway confines.

Contributing factors

Incorrect use/operationPilot