Casualties unknown

State Police Helicopter Strikes Ground During Night Flight in Low Ceilings (N97SP)

Georgetown, DE, US

On August 17, 1999, a Bell 407 (registration N97SP) operated by Delaware State Police was involved in an aviation accident near Georgetown, DE. Investigators recorded the probable cause as: The pilot's improper preflight evaluation of the weather, which resulted in inadvertent flight into IMC. Factors were the fog, and night conditions. This summary draws on records from the U.S. National Transportation Safety Board (NTSB) historical archive; 8 related events involving the same aircraft type or operator are linked below.

Sourcesthe U.S. National Transportation Safety Board (NTSB) historical archivePrimary reportUpdated 2026-06-10Data APIEditorial standards

A state police helicopter crashed during a night flight after encountering low clouds. The pilot returned to the airport but lost sight of the ground; the helicopter's skids collapsed on impact.

Narrative

A state police helicopter departed on a night flight within the state. While climbing through approximately 200 feet, the helicopter entered low clouds. The pilot decided to return to the departure airport and initiated a turn. During the turn, the pilot lost sight of the ground. The observer called to the pilot just before the helicopter struck the ground, allowing the pilot to cushion the impact. Nevertheless, the helicopter's skids collapsed upon landing.

Weather Information

The pilot reported that on the way to the airport, he drove through patches of fog. At the airport, he observed 2 miles of ground visibility and stars visible overhead. Based on these observations, he did not check the weather. Recorded weather at the airport one hour prior to the accident indicated a ceiling of 100 feet broken, 700 feet overcast. Ten minutes after the accident, the weather at the airport reported a ceiling of 100 feet overcast. Similar weather observations were recorded at the closest weather stations to the north and south of the departure airport.

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20001212X19619. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.