NTSB Identification: MKC86LA085.
The docket is stored on NTSB microfiche number 30467.
Accident occurred Friday, April 11, 1986 in JACKSON, MO
Aircraft: AERO COMMANDER S2R, registration: N5564X
Injuries: 1 Uninjured.

NTSB investigators may not have traveled in support of this investigation and used data provided by various sources to prepare this aircraft accident report.

IN CRUISE FLT THE PIC SMELLED SOMETHING BURNING AND NOTICED BLACK AND WHITE SMOKE POURING FM THE ENG COWLING. THIS WAS FOLLOWED BY A PARTIAL LOSS OF PWR. A PRECAUTIONARY LANDING WAS MADE IN A FIELD. THE PIC NOTICED FLAMES ERUPTING FM THE ENG AREA AFTER EXITING THE ACFT. LATER INSPECTION REVEALED A LOOSE EXHAUST COLLECTOR RING CLAMP HAD SLIPPED OUT OF POSITION. THE RESULTANT SEPARATION OF THE EXHAUST TUBING ALLOWED THE HOT EXHAUST TO BE DIVERTED TO THE CARBURETOR AREA OF THE ENG AND A FIRE ENSUED. THE HOT EXHAUST WAS INGESTED INTO THE CARBURETOR INLET CONTRIBUTING TO THE ENG'S PARTIAL PWR LOSS.

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

EXHAUST SYSTEM,CLAMP..SEPARATION

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

MAINTENANCE,INSPECTION..INADEQUATE..OTHER MAINTENANCE PERSONNEL

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