Rotary winged traffic suffers aircraft damage after making an emergency landing during a test flight...

Attributes
ACN	279416
Time
Date	199407
Day	Fri
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : 0r3
State Reference	LA
Altitude	agl bound lower : 0 agl bound upper : 500
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	general aviation : corporate
Make Model Name	Jet Ranger III
Operating Under FAR Part	Part 135
Flight Phase	descent : approach landing other
Flight Plan	None
Person 1
Affiliation	Other
Function	flight crew : single pilot
Qualification	pilot : instrument pilot : commercial
Experience	flight time last 90 days : 120 flight time total : 5000
ASRS Report	279416
Events
Anomaly	aircraft equipment problem : critical other anomaly
Independent Detector	other flight crewa
Resolutory Action	none taken : unable other
Consequence	other
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	Pilot Deviation other

Narrative:

For 2 days prior to the fri of july I had an intermittent shudder when landing. On the fri I decided to try a short flight to see if I could determine if I had a problem and to give the mechanics some direction where to check. After trying a couple of accelerations/decelerations the aircraft began shaking. I decided to land at abbeville airport only 2 mi away. The vibration/shaking continued to increase. By mid final it was so bad that I felt I was going to lose control of the aircraft. I rolled the throttle off hoping it would decrease the shaking. It got a little better but not much. Upon landing I felt the aircraft spring back up a little but not much. It didn't leave the ground and then the main rotor cut off the tail rotor gearbox.

Original NASA ASRS Text

Title: ROTARY WINGED TFC SUFFERS ACFT DAMAGE AFTER MAKING AN EMER LNDG DURING A TEST FLT.

Narrative: FOR 2 DAYS PRIOR TO THE FRI OF JULY I HAD AN INTERMITTENT SHUDDER WHEN LNDG. ON THE FRI I DECIDED TO TRY A SHORT FLT TO SEE IF I COULD DETERMINE IF I HAD A PROB AND TO GIVE THE MECHS SOME DIRECTION WHERE TO CHK. AFTER TRYING A COUPLE OF ACCELERATIONS/DECELERATIONS THE ACFT BEGAN SHAKING. I DECIDED TO LAND AT ABBEVILLE ARPT ONLY 2 MI AWAY. THE VIBRATION/SHAKING CONTINUED TO INCREASE. BY MID FINAL IT WAS SO BAD THAT I FELT I WAS GOING TO LOSE CTL OF THE ACFT. I ROLLED THE THROTTLE OFF HOPING IT WOULD DECREASE THE SHAKING. IT GOT A LITTLE BETTER BUT NOT MUCH. UPON LNDG I FELT THE ACFT SPRING BACK UP A LITTLE BUT NOT MUCH. IT DIDN'T LEAVE THE GND AND THEN THE MAIN ROTOR CUT OFF THE TAIL ROTOR GEARBOX.

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.