NTSB Identification: MKC86FCA01.
The docket is stored on NTSB microfiche number 28993.
Accident occurred Saturday, October 26, 1985 in CAPE GIRARDEAU, MO
Aircraft: Bede Aircraft BD-5B, registration: N548BD
Injuries: 1 Fatal.

NTSB investigators either traveled in support of this investigation or conducted a significant amount of investigative work without any travel, and used data obtained from various sources to prepare this aircraft accident report.

THE OWNER/BUILDER HAD HIRED THE PLT TO TEST FLY THE ACFT ON ITS INITIAL FLT. SHORTLY AFTER TAKEOFF, THE PLT TRANSMITTED THAT HE HAD AN ENG PROBLEM. HE WAS CLEARED FOR AN IMMEDIATE LANDING & ENTERED A DOWNWIND FOR RWY 28. AS HE CONTINUED & WAS TURNING FROM A BASE TO FINAL APCH, THE ACFT ENTERED A SPIN IN THE OPPOSITE DIRECTION. THE ACFT IMPACTED ON THE EDGE OF AN INTERSTATE HIGHWAY WHILE IN A STEEP NOSE-DOWN ATTITUDE. AN EXAM OF THE ENG REVEALED THE #1 CYCLINDER SPARK PLUG WIRE WAS COMPLETELY DETACHED; THE #2 CYLINDER WIRE WAS DETACHED FROM THE SPARK PLUG (ALTHO ITS DUST BOOT WAS STILL CONNECTED); & THE #4 SPARK PLUG WIRE DUST BOOT SHOWED EVIDENCE OF HAVING COME IN CONTACT WITH AN ADJACENT EXHAUST STACK & WAS BURNED UNTIL THERE WAS SEPARATION AT THE BOOT'S MIDPOINT.

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

IGNITION SYSTEM,HIGH TENSION WIRING..DISCONNECTED

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

AIRCRAFT HANDLING..NOT MAINTAINED..PILOT IN COMMAND

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

STALL/SPIN..INADVERTENT..PILOT IN COMMAND

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

MAINTENANCE,INSTALLATION..IMPROPER..OTHER MAINTENANCE PERSONNEL

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