Hayes DICKEY E-RACER N99G

Summary

On 3 July 1994 at about 19:16 local time, a Hayes DICKEY E-RACER registered N99G, operated by Jimmie D. Hays, was involved in an accident near Elko, Nevada, United States. 2 people were on board and nobody was injured. The aircraft was substantially damaged. The NTSB has published a probable cause for this accident; it is quoted in full below.

Date

3 July 1994 at 19:16

Classification

Accident

Location

Elko, Nevada, United States

Coordinates

40.9504, -115.7904

Aircraft

Hayes DICKEY E-RACER

Registration

N99G

Category

Airplane

Engines

1

Operator

Jimmie D. Hays

Operating rule

Part 91: General Aviation

Purpose of flight

Personal

Phase of flight

Not recorded

Route

Jackpot → Unknown

Aircraft damage

Substantial

Weather

VMC

Light

Day

NTSB number

LAX94LA274

Nobody was injured.

a fatigue fracture and separation of the propeller flange from an improperly machined propeller extension assembly. Inadequate design, substantiation, and approval of the part design was a factor in the accident.

Quoted verbatim from the NTSB record. This site does not paraphrase or interpret it.

Read the full NTSB narrative

IN CRUISE, THE PROPELLER SEPARATED FROM THE AIRCRAFT. THE PILOT ATTEMPTED TO LAND ON A DIRT ROAD, BUT HAD INSUFFICIENT ALTITUDE AND COLLIDED WITH HIGH VEGETATION AND ROUGH TERRAIN. POST ACCIDENT INSPECTION REVEALED THAT THE PROPELLER SEPARATED FROM THE PROPELLER EXTENSION ASSEMBLY AT THE PROPELLER FLANGE. THE PROPELLER AND THE ATTACHED FLANGE WERE NOT RECOVERED. THE PROPELLER EXTENSION ASSEMBLY IS A BARREL-SHAPED MACHINED ALUMINUM PART WITH FLANGES ON EACH END OF THE BARREL, ONE FOR CONNECTION TO THE ENGINE CRANKSHAFT AND ONE FOR CONNECTION TO THE PROPELLER. THE PROPELLER FLANGE FRACTURED AWAY FROM THE BARREL AT A RADIUS FORMED BETWEEN THE BARREL AND THE FLANGE. BEACH MARKINGS WERE OBSERVED EMANATING FROM A POINT ON THE SURFACE AT THE RADIUS WITH BEACH MARKS ABOUT 1/2 ACROSS THE BARREL WALL. A REPORT SUBMITTED BY THE AIRCRAFT OWNER NOTED THAT THE RADIUS BETWEEN THE BARREL AND THE FLANGE WAS MEASURED AT BETWEEN 1/8 AND 3/32 OF AN INCH, WITH FLAT SPOTS AND SCORING NOTED. THE PROPELLER EXTENSION ASSEMBLY WAS NOT MANUFACTURED IN ACCORDANCE WITH A PARTS MANUFACTURING OR TYPE CERTIFICATE APPROVAL.

Quoted verbatim from the NTSB record.