Deleeuw SPRINT 1000 UNREG

Summary

On 20 March 1999 at about 19:30 local time, a Deleeuw SPRINT 1000 registered UNREG was involved in an accident near Lakewood, New Jersey, United States. 2 people were on board and one died, one was seriously injured. The aircraft was destroyed. The NTSB has published a probable cause for this accident; it is quoted in full below.

Date

20 March 1999 at 19:30

Classification

Accident

Location

Lakewood, New Jersey, United States

Coordinates

Not recorded

Aircraft

Deleeuw SPRINT 1000

Registration

UNREG

Category

Airplane

Engines

1

Operator

Not recorded

Operating rule

Part 91: General Aviation

Purpose of flight

Unknown

Phase of flight

Not recorded

Aircraft damage

Destroyed

Weather

VMC

Light

Day

NTSB number

NYC99FA078

1 person died.

The pilot's loss of control, which resulted in an unintentional stall/spin after an engine failure. A factor in the accident was the engine failure, which occurred when the magneto piston seized within the cylinder sleeve during an overtemp event.

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

Read the full NTSB narrative

The unregistered homebuilt airplane experienced an engine failure, then began a left turn, which evolved into a cartwheel prior to impact. The engine's normal exhaust gas temperature range was 930 degrees to 1,150 degrees Fahrenheit, while the maximum temperature was 1,200 degrees Fahrenheit. The passenger remembered seeing a digital readout, as it passed through the number 1,168. Engine teardown revealed scuffing on the magneto piston, in the vicinity of the exhaust port, on the upper half of the piston skirt. Within the scuffing, carbon deposits were observed. Scuffing and carbon fill were also found at the 4 o'clock and 7 o'clock positions, relative to the exhaust port, also on the upper half of the piston skirt. The piston rings and cylinder walls exhibited scuffing as well, which positionally corresponded to the scuffing on the cylinder skirt.

Quoted verbatim from the NTSB record.