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NTSB Report
February 4, 1992 · 85 Manista KB-2 · N169RM
Rosamond, CA
Overview
Report Status
Probable Cause
Event Type
Accident
Date
February 4, 1992
Injury Outcomes
1 injury (1 fatality)
Location
Rosamond, CA
Aircraft
85 Manista KB-2
Tail Number
N169RM
Operator
Calvin C Peterson
Injuries
Fatal
Aircraft Damage
Destroyed
NTSB Number
LAX92LA109
DURING A LOCAL AREA FLIGHT THE PILOT WAS OBSERVED CIRCLING OVER A RESIDENTIAL AREA AT A LOW ALTITUDE. THE PILOT INITIATED AN ABRUPT TURNING MANEUVER WHILE CHANGING THE EXPERIMENTAL GYROPLANE'S PITCH ATTITUDE. ROTOR RPM DECREASED AND THE BLADES BEGAN EXCESSIVELY FLAPPING. THE BLADES COLLIDED WITH AND SEVERED THE RUDDER AND PROPELLER. THEREAFTER, THE GYROPLANE NOSED DOWN AND DESCENDED (UNCONTROLLED) INTO A CITY STREET.
NTSB Probable Cause
THE PILOT'S FAILURE TO MAINTAIN MAIN ROTOR RPM ADEQUATE TO AVOID FLAPPING. FACTORS WHICH CONTRIBUTED TO THE ACCIDENT WERE RELATED TO THE PILOT'S PERFORMANCE OF AN EXCESSIVELY ABRUPT MANEUVER.
Full Narrative
DURING A LOCAL AREA FLIGHT THE PILOT WAS OBSERVED CIRCLING OVER A RESIDENTIAL AREA AT A LOW ALTITUDE. THE PILOT INITIATED AN ABRUPT TURNING MANEUVER WHILE CHANGING THE EXPERIMENTAL GYROPLANE'S PITCH ATTITUDE. ROTOR RPM DECREASED AND THE BLADES BEGAN EXCESSIVELY FLAPPING. THE BLADES COLLIDED WITH AND SEVERED THE RUDDER AND PROPELLER. THEREAFTER, THE GYROPLANE NOSED DOWN AND DESCENDED (UNCONTROLLED) INTO A CITY STREET.
Flight
Event TypeAccident
Event Time14:45 PST
Nearest Airport0nm N
Runway0
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
Aircraft85 Manista KB-2
Tail NumberN169RM
Aircraft CategoryGyro
DamageDestroyed
OperatorCalvin C Peterson
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsMcculloch · 4318A&E/0-100 · Reciprocating · 70
Seats1
People & Injuries
Injury Summary1 injury (1 fatality)
Fatal1
Serious0
Minor0
Uninjured0
Total1
Crew 1Age 66 · Third Class
Conditions
ConditionsVMC
LightDaylight
WindCalm
Visibility50 sm
CeilingNone
Temperature / Dew Point61 F / 0 C
Altimeter0
Weather SourceWIT