NTSB Identification: ATL88FA168.
The docket is stored on NTSB microfiche number 37296.
Accident occurred Monday, May 09, 1988 in OZARK, AL
Probable Cause Approval Date: 10/02/1989
Aircraft: HUGHES 269A, registration: N1038Y
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.

THREE MONTHS PRIOR TO THE ACCIDENT A MECHANIC REPAIRED THE LEFT MAGNETO. HE REINSTALLED IT AND TIMED IT WITH THE RIGHT MAGNETO. BOTH MAGNETOS WERE FOUND TO HAVE ADVANCED TIMING. INTERNAL EXAMINATION SHOWED DISCREPANCIES WHICH WOULD LEAD TO ELECTRICAL BREAKDOWN. AFTER TAKEOFF THE ENGINE BACKFIRED AND THE PILOT IN COMMAND ATTEMPTED WHAT APPEARED TO BE A BACKUP AUTOROTATION TO A RUN-ON LANDING. EXAMINATION OF THE CRASH SITE DEMONSTRATED THAT THE VERTICAL DESCENT WAS STOPPED, HOWEVER, THE FORWARD VELOCITY WAS NOT. AFTER TOUCHDOWN THE HELO SLID THROUGH A DITCH. COLLISION WITH THE FAR SIDE OF THE DITCH RESULTED IN FATAL IMPACT FORCES TRANSMITTED TO THE PILOT IN COMMAND.

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

IGNITION SYSTEM,MAGNETO..FAILURE,PARTIAL

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

MAINTENANCE,ALIGNMENT..IMPROPER..COMPANY MAINTENANCE PERSONNEL

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

AUTOROTATION..IMPROPER..PILOT IN COMMAND

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

RUN ON LANDING..IMPROPER..PILOT IN COMMAND


Contributing Factors

TERRAIN CONDITION..DITCH


Contributing Factors

TERRAIN CONDITION..ROUGH/UNEVEN

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