Hilvety CWII N7176J

Summary

On 3 August 1990 at about 12:30 local time, a Hilvety CWII registered N7176J, operated by Mark Hilvety, was involved in an accident near Moweaqua, Illinois, United States. One person was on board and one had minor injuries. The aircraft was substantially damaged. The NTSB has published a probable cause for this accident; it is quoted in full below.

Date

3 August 1990 at 12:30

Classification

Accident

Location

Moweaqua, Illinois, United States

Nearest airport

Hilvety (4K4)

Coordinates

39.6202, -89.0109

Aircraft

Hilvety CWII

Registration

N7176J

Category

Airplane

Engines

1

Operator

Mark Hilvety

Operating rule

Part 91: General Aviation

Purpose of flight

Personal

Phase of flight

Not recorded

Aircraft damage

Substantial

Weather

VMC

Light

Day

NTSB number

CHI90DEV08

1 person had minor injuries.

THE PILOT'S FAILURE TO MAINTAIN FLYING SPEED AND STALLING THE AIRPLANE WHILE ATTEMPTING TO REVERSE COURSE FOR A FORCED LANDING. CONTRIBUTING TO THE ACCIDENT WAS THE PILOT'S FAILURE TO PROPERLY REINSTALL SPARK PLUG CABLES DURING SERVICING CONDUCTED PRIOR TO FLIGHT.

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

Read the full NTSB narrative

THE PILOT REMOVED, CLEANED AND REINSTALLED SPARK PLUGS BEFORE FLIGHT. ABOUT 150 FEET INTO INITIAL CLIMBOUT FROM TAKEOFF, THE PILOT STATES THE ENGINE LOST POWER AS IF RUNNING ON ONLY ONE OF THE TWO CYLINDERS. THE PILOT STATES HE ATTEMPTED TO TURN BACK TO THE RUNWAY AND LANDED THE AIRPLANE IN A MUSHED STALL. EXAMINATION OF THE ENGINE REVEALED ONE SPARK PLUG CABLE DISCONNECTED. THE ENGINE PERFORMED SATISFACTORILY WHEN THE CABLE WAS RECONNECTED.

Quoted verbatim from the NTSB record.