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NTSB Report
August 29, 1984 · Hughes 269C · N7487F
Witts Springs, AR
Overview
Report Status
Preliminary report
Event Type
Accident
Date
August 29, 1984
Injury Outcomes
No injuries (2 uninjured)
Location
Witts Springs, AR
Aircraft
Hughes 269C
Tail Number
N7487F
Injuries
None
Aircraft Damage
Substantial
NTSB Number
MKC84LA265
WHILE MANUEVERING AT AN ALT OF 35 TO 40 FT ABOVE TREE THE PLT FELT A SHUTTER AND LOW FREQUENCY SHAKING OF THE ROTOR DISK. ROTOR RPM AND ENGINE RPM DECREASED AND THE ACFT ENTERED A SHALLOW DESCENT. THE PLT APPLIED FORWARD CYCLIC, REDUCED COLLECTIVE AND INCREASED THROTTLE. WITH INSUFFICIENT ALT TO RECOVER THE PLT MANEUVERED THE ACFT AWAY FROM TALL TREES AND SETTLED THE ACFT INTO AN AREA OF SMALL TREES. NO MECHANICAL FAILURE/MALFUNCTION WAS FOUND. THE ALT AT THE ACCIDENT SITE WAS 2000 FT MSL WITH A DENSITY ALT OF APRX 4500 FT MSL.
Full Narrative
WHILE MANUEVERING AT AN ALT OF 35 TO 40 FT ABOVE TREE THE PLT FELT A SHUTTER AND LOW FREQUENCY SHAKING OF THE ROTOR DISK. ROTOR RPM AND ENGINE RPM DECREASED AND THE ACFT ENTERED A SHALLOW DESCENT. THE PLT APPLIED FORWARD CYCLIC, REDUCED COLLECTIVE AND INCREASED THROTTLE. WITH INSUFFICIENT ALT TO RECOVER THE PLT MANEUVERED THE ACFT AWAY FROM TALL TREES AND SETTLED THE ACFT INTO AN AREA OF SMALL TREES. NO MECHANICAL FAILURE/MALFUNCTION WAS FOUND. THE ALT AT THE ACCIDENT SITE WAS 2000 FT MSL WITH A DENSITY ALT OF APRX 4500 FT MSL.
Flight
Event TypeAccident
Event Time15:15 CDT
Nearest AirportRussellisville Municipal (32nm N)
Runway0
Runway Length0
Runway Width0
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftHughes 269C
Tail NumberN7487F
Aircraft CategoryHeli
DamageSubstantial
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsLycoming · HIO-360-D1A · Reciprocating · 190
Seats3
People & Injuries
Injury SummaryNo injuries (2 uninjured)
Fatal0
Serious0
Minor0
Uninjured2
Total2
Crew 1Age 31 · First Class
Conditions
ConditionsVMC
LightDaylight
Wind200° @ 15 kt
Visibility6 sm
CeilingBroken clouds 6000 ft
Temperature / Dew Point10 C / 0 C
Altimeter29.00 inHg
Weather SourcePILO