NTSB Identification: LAX87LA157.
The docket is stored on NTSB microfiche number 36221.
Accident occurred Thursday, March 19, 1987 in PHOENIX, AZ
Probable Cause Approval Date: 06/16/1989
Aircraft: McDonnell Douglas 369E, registration: N1601Y
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.

DURING FACTORY FLT TRAINING, PRIOR TO DELIVERY OF THE NEW HELICOPTER TO THE OWNER, THE CFI SAID HE ASKED THE STUDENT TO PERFORM A SERIES OF EMERGENCY PROCEDURES WHICH INCLUDED QUICK STOPS FROM AN INITIAL TAKEOFF FOLLOWED BY HOVERING AUTOROTATIONS. THE CFI SAID THE STUDENT SUCCESSFULLY COMPLETED ONE SERIES OF MANEUVERS AND HE ASKED HIM TO DO ONE MORE. THE CFI SAID THAT DURING THE DECELERATION PHASE OF THE QUICK STOP, THE STUDENT MISTAKENLY 'ROLLED THE THROTTLE TO THE IDLE POSITION' AT ABOUT 25 FT AGL. THE CFI SAID THAT HE IMMEDIATELY ASSUMED CONTROL OF THE AIRCRAFT, ROLLED THE THROTTLE TO THE FULL OPEN POSITION AND ATTEMPTED TO ENTER AN AUTO ROTATION, HOWEVER, INSUFFICIENT ENERGY REMAINED IN THE ROTOR TO FULLY ARREST THE DESCENT RATE PRIOR TO TOUCHDOWN.

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

THROTTLE/POWER CONTROL..IMPROPER USE OF..DUAL STUDENT

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

ROTOR RPM..NOT MAINTAINED..DUAL STUDENT

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

SUPERVISION..INADEQUATE..PILOT IN COMMAND(CFI)

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