NTSB Identification: ATL87FA003.
The docket is stored on NTSB microfiche number 33132.
Accident occurred Thursday, October 09, 1986 in GAHANNA, OH
Probable Cause Approval Date: 04/25/1988
Aircraft: McDonnell Douglas 369E, registration: N52705
Injuries: 2 Serious.

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 HELICOPTER HAD BEEN CONDUCTING A SERIES OF DEMO FLTS DURING THE DAY & WAS ON THE LAST SCHEDULED FLT OF THE DAY. TO DROP OFF THE LOCAL PLT WHO HAD REQUESTED THE DEMO FLTS, WHEN THE LOSS OF POWER OCCURRED. THEY HAD MADE A TAKE OFF OVER THE TAXIWAY & TURNED TO THE NORTH AS DIRECTED BY THE TWR. THEY WERE OVER A HOUSING AREA NORTH OF THE ARPT WHEN THE ENG OUT AND LOW ROTOR WARNING SYSTEM SOUNDED. THE LOCAL PLT, WHO HAD MADE THE TAKE OFF & WAS AT THE CONTROLS, TOLD THE DEMO PLT THAT HE WAS TO TAKE CONTROL OF THE ACFT. HE STATED THAT THE START BUTTON WAS ON THE LEFT SET OF CONTROLS. THE DEMO PLT WAS ABLE TO CLEAR THE HOUSING AREA BUT THE ACFT HIT VERY HARD IN THE MEDIAN OF A DIVIDED HIGHWAY. THE ACFT CROSSED THE SOUTH LANES AND STOPPED IN THE GRASS AT THE EDGE OF THE ROAD. IT WAS DESTROYED BY FIRE. EXAMINATION REVEALED A LOOSE 'B' NUT ON THE P/C LINE TO THE FUEL CONTROL UNIT.

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

FUEL SYSTEM,FUEL CONTROL..DISABLED

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

MAINTENANCE,REPLACEMENT..IMPROPER..COMPANY MAINTENANCE PERSONNEL

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

MAINTENANCE,INSPECTION..POOR..COMPANY MAINTENANCE PERSONNEL

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

PNEUMATIC SYSTEM..UNDERTORQUED

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

PNEUMATIC SYSTEM..LOOSE

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

PNEUMATIC SYSTEM..DISCONNECTED



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