NTSB Identification: MIA88LA221.
The docket is stored on NTSB microfiche number 36886.
Accident occurred Wednesday, July 13, 1988 in ZELLWOOD, FL
Probable Cause Approval Date: 07/10/1989
Aircraft: HAHN RV-4, registration: N144TH
Injuries: 2 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.

FLT EXPERIENCED ROUGH RUNNING ENGINE AND LOSS OF POWER. AS ACFT WAS TURNED TOWARD AGRICULTURAL STRIP FOR AN EMERGENCY LANDING THE ENGINE FAILED COMPLETELY. THE PLT TOUCHED DOWN SHORT OF THE RUNWAY AND BOGGED DOWN IN TALL GRASS AND MUCK CAUSING COLLAPSE OF THE LANDING GEAR. THE ACFT CAME TO REST ON IT'S NOSE. EXAMINATION OF THE ENGINE REVEALED THE LEFT MAGNETO WHICH HAD BEEN TIMED .7 FLT HOURS BEFORE THE ACCIDENT WAS LOOSE AND TURNED IN THE MOUNT. THE MAGNETO WAS STILL TOUCHING THE CASE MAKING A GROUND CONNECTION AND THE 'P' LEAD WAS STILL ATTACHED. THE RIGHT MAGNETO WAS FOUND SECURED PROPERLY.

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

MAINTENANCE,ADJUSTMENT..IMPROPER..OTHER MAINTENANCE PERSONNEL

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

IGNITION SYSTEM,MAGNETO..NOT SECURED

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

EMERGENCY PROCEDURE..IMPROPER..PILOT IN COMMAND

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

POWERPLANT CONTROLS..IMPROPER USE OF..PILOT IN COMMAND


Contributing Factors

TERRAIN CONDITION..HIGH VEGETATION


Contributing Factors

TERRAIN CONDITION..WET

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