Casualties unknown

1992-07-05: Cessna 177B (N35107) — Sancken, Elton H. — Dwight, IL

Dwight, IL, US

On July 5, 1992, a Cessna 177B (registration N35107) operated by Sancken, Elton H. was involved in an aviation accident near Dwight, IL. Investigators recorded the probable cause as: The passenger's entry into the propeller arc while the engine was running, due to the pilot's decision to leave the engine operating and ask the passenger to seek assistance. This summary draws on records from the U.S. National Transportation Safety Board (NTSB) historical archive.

Sourcesthe U.S. National Transportation Safety Board (NTSB) historical archivePrimary reportUpdated 1781061362Data APIEditorial standards

A pilot's wife was injured after walking into the propeller arc of a running aircraft while attempting to find help for a mechanical issue on the ramp.

What happened

Following the completion of a flight, the pilot taxied the aircraft to a parking spot on the ramp and brought it to a halt with the engine still running. He attempted to signal ground personnel to address a discrepancy he had noticed in the airplane's condition, but his efforts were unsuccessful. Unable to get assistance directly, he instructed his passenger, who was also his wife, to exit the aircraft and locate someone to help them.

The passenger exited through the right-side door and walked into the area swept by the rotating propeller arc. The moving blades struck her, resulting in injuries that required medical attention. The incident highlights the dangers of walking near running engines on the ramp without proper awareness or communication protocols.

The investigation

Investigators examined the circumstances surrounding the ground stop and the position of the passenger relative to the aircraft's propulsion system. The focus was on the sequence of events leading to the contact between the passenger and the propeller. No mechanical failure of the engine or propeller system was identified as a contributing factor to the accident itself; the issue was purely operational and situational.

Findings

The primary finding was that the passenger entered the hazardous zone of the rotating propeller while the engine was operating. The pilot had left the engine running while seeking assistance, creating an uncontrolled hazard on the ramp. The lack of immediate ground crew support forced the pilot to rely on a non-pilot passenger to seek help, which led to the accident. This situation underscores the importance of securing the aircraft and ensuring all personnel are clear of the propeller arc before leaving the cockpit or asking passengers to exit.

Safety message

Pilots should ensure that the engine is shut down and the area around the aircraft is safe before allowing passengers to exit, especially when seeking assistance for mechanical issues. Ground personnel should be alerted via radio or phone rather than relying on visual signals if possible, to prevent such dangerous situations.

Probable cause

The passenger's entry into the propeller arc while the engine was running, due to the pilot's decision to leave the engine operating and ask the passenger to seek assistance.

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20001211X15110. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.