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Casualties unknown

Helicopter Sinks in Delaware River After Takeoff (N203Q)

Philadelphia, PA, US

On July 9, 1995, an Enstrom F-28A (registration N203Q) was involved in an aviation accident near Philadelphia, PA. Investigators recorded the probable cause as: The pilot's failure to maintain safe operating rotor rpm on takeoff. 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 2026-07-04Data APIEditorial standards

A helicopter pilot reported a loss of rotor rpm during takeoff over the Delaware River, leading to the aircraft contacting the water and sinking. The pilot stated he failed to maintain safe rotor rpm.

Incident Details

A helicopter pilot maneuvered the aircraft for takeoff to the east, over the Delaware River. As the helicopter entered effective translational lift, it began to sink, and rotor rpm decreased. The pilot increased the throttle, but the rotor rpm did not increase in time. The skids contacted the water, resulting in the helicopter going into the water and sinking.

Pilot Statement

The pilot stated, "I do not believe that there was a mechanical problem . . . I failed to maintain safe operating (rotor) rpm on takeoff." He also stated, "he didn't give enough throttle and didn't stay ahead of the (rotor) rpm."

Conclusion

No mechanical issues were identified by the pilot. The event was attributed to the pilot not maintaining sufficient rotor rpm during the takeoff.

Probable cause

The pilot's failure to maintain safe operating rotor rpm on takeoff.
Loss of control in flight

Frequently asked questions

What happened in the 9 Jul 1995 Enstrom F-28A accident near Philadelphia, PA?

A helicopter pilot reported a loss of rotor rpm during takeoff over the Delaware River, leading to the aircraft contacting the water and sinking. The pilot stated he failed to maintain safe rotor rpm.

What aircraft was involved and where did it happen?

The accident on 9 Jul 1995 involved an Enstrom F-28A, registration N203Q, at Philadelphia, PA.

What was the probable cause of the accident?

The pilot's failure to maintain safe operating rotor rpm on takeoff.

More accident analyses

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20001207X04040. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.