Rotary winged aircraft in hover maneuver. Aircraft experiences loss of aircraft control.

Attributes
ACN	215667
Time
Date	199207
Day	Wed
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : 6ma3
State Reference	MA
Altitude	agl bound lower : 0 agl bound upper : 3
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	general aviation : instructional
Make Model Name	Helicopter
Flight Phase	cruise other other other
Flight Plan	None
Person 1
Affiliation	Other
Function	flight crew : single pilot
Qualification	pilot : atp pilot : cfi pilot : instrument pilot : commercial
Experience	flight time last 90 days : 80 flight time total : 7200 flight time type : 1500
ASRS Report	215667
Events
Anomaly	aircraft equipment problem : critical other anomaly
Independent Detector	other flight crewa
Resolutory Action	flight crew : declared emergency none taken : unable
Consequence	other
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	other

Narrative:

In hover after maintenance began turn to right. Ship continued to bank and no amount of cyclic input could stop movement. Ship's rotor struck ground. FAA unable to pinpoint cause of control failure.

Original NASA ASRS Text

Title: ROTARY WINGED ACFT IN HOVER MANEUVER. ACFT EXPERIENCES LOSS OF ACFT CTL.

Narrative: IN HOVER AFTER MAINT BEGAN TURN TO R. SHIP CONTINUED TO BANK AND NO AMOUNT OF CYCLIC INPUT COULD STOP MOVEMENT. SHIP'S ROTOR STRUCK GND. FAA UNABLE TO PINPOINT CAUSE OF CTL FAILURE.

Data retrieved from NASA's ASRS site as of July 2007 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.