Accident Robinson R22 N8373J,
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ASN Wikibase Occurrence # 382466
 
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Date:Monday 7 March 1983
Time:19:25 LT
Type:Silhouette image of generic R22 model; specific model in this crash may look slightly different    
Robinson R22
Owner/operator:Coker Helicopters
Registration: N8373J
MSN: 318
Total airframe hrs:212 hours
Engine model:Lycoming O-320-B2C
Fatalities:Fatalities: 0 / Occupants: 2
Aircraft damage: Substantial
Category:Accident
Location:Grand Prairie, TX -   United States of America
Phase: Landing
Nature:Training
Departure airport:
Destination airport:
Investigating agency: NTSB
Confidence Rating: Accident investigation report completed and information captured
Narrative:
THE PLT & FLT EXAMINER WERE ON AN EVALUATION FLT AFTER THE PLT'S FLT INSTRUCTOR HAD RECOMMENDED HIM FOR A CFI CHECK FLT. TO DEMONSTRATE A HOVERING AUTOROTATION, THE PLT HAD SELECTED AN AREA OF SOFT TURF THAT SLOPTED DOWNHILL. THE EXAMINER STATED THAT AFTER THE PLT CLOSED THE THROTTLE, THE HELICOPTER DESCENDED NORMALLY; HOWEVER, THE PLT APPLIED EXCESSIVE COLLECTIVE PITCH. THE EXAMINER REPORTED THAT AT THE MOMENT OF TOUCHDOWN, THE HELICOPTER RESPONDED TO COLLECTIVE INPUT, CAME OFF THE GROUND IN A NOSE LOW ATTITUDE, THEN TOUCHED DOWN ON THE TOES OF THE SKIDS ROLLED & OVER. REPORTEDLY, THE EXAMINER GRABBED FOR THE CYCLIC IN AN INSTINCTIVE EFFORT TO REGAIN CONTROL OF THE HELICOPTER, BUT MISSED THE HANDLE DUE TO THE UNIQUE CONTROL CONFIGURATION OF ACFT. THE PLT'S HELICOPTER TRAINING HAD BEEN IN 2 ROBINSON R22'S, THE NEWER OF WHICH WAS EQUIPPED WITH THE HEAVIER HP ROTOR BLADES. THE HP BLADES HAD A DIFFERENT AFFECT ON THE HELICOPTER'S RESPONSE & FLT CHARACTERISTICS DURING AUTOROTATIONS.

Probable Cause:

Accident investigation:
cover
  
Investigating agency: NTSB
Report number: FTW83FA143
Status: Investigation completed
Duration:
Download report: Final report

Sources:

NTSB FTW83FA143

Location

Revision history:

Date/timeContributorUpdates
02-Apr-2024 14:12 ASN Update Bot Added

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