1991-09-02: Cessna A185F — Ralph A. Hassall — Conchas Dam, NM

Casualties unknown • Conchas Dam, NM, US

Probable cause

LANDING GEAR LOCKING MECHANISM LOOSE, LANDING GEAR WHEEL DEPLOYED INADVERTENTLY, AND MAINTENANCE ALIGNMENT NOT PERFORMED. FACTORS WERE: PROPELLER GOVERNOR UNDERSPEED, MAINTENANCE ADJUSTMENT NOT CORRECTED, AND LOWERING OF FLAPS NOT PERFORMED.

— NTSB Determination

Accident narrative

THE AIRPLANE WATERLOOPED DURING THE TAKEOFF RUN AFTER NEARLY WATERLOOPING ON THE PREVIOUS LANDING. POSTACCIDENT EXAMINATION DISCLOSED THE LANDING GEAR CABLE WAS IMPROPERLY RIGGED, ALLOWING THE LEFT AFT PONTOON WHEEL TO DEPLOY. MAXIMUM RPM COULD NOT BE ATTAINED BECAUSE THE PROPELLER GOVERNOR WAS NOT PROPERLY ADJUSTED. A REVIEW OF THE ACCIDENT VIDEO TAPE REVEALED AIRCRAFT HAD ATTAINED SUFFICIENT FLYING SPEED. PILOT DID NOT DEPLOY TAKEOFF FLAPS.

Frequently asked questions

What happened in the 1991-09-02 Cessna A185F accident near Conchas Dam, NM?

THE AIRPLANE WATERLOOPED DURING THE TAKEOFF RUN AFTER NEARLY WATERLOOPING ON THE PREVIOUS LANDING. POSTACCIDENT EXAMINATION DISCLOSED THE LANDING GEAR CABLE WAS IMPROPERLY RIGGED, ALLOWING THE LEFT AFT PONTOON WHEEL TO DEPLOY. MAXIMUM RPM COULD NOT BE ATTAINED BECAUSE THE PROPELLER GOVERNOR WAS NOT PROPERLY ADJUSTED.…

What aircraft was involved and where did it happen?

The accident on 1991-09-02 involved a Cessna A185F, registration N93272, operated by Ralph A. Hassall, at Conchas Dam, NM.

What was the probable cause of the accident?

LANDING GEAR LOCKING MECHANISM LOOSE, LANDING GEAR WHEEL DEPLOYED INADVERTENTLY, AND MAINTENANCE ALIGNMENT NOT PERFORMED. FACTORS WERE: PROPELLER GOVERNOR UNDERSPEED, MAINTENANCE ADJUSTMENT NOT CORRECTED, AND LOWERING OF FLAPS NOT PERFORMED.

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20001212X18085. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.

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