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NTSB Report
November 15, 1983 · Enstrom F28F · N8622U
Hillsboro, OR
Overview
Report Status
Preliminary report
Event Type
Accident
Date
November 15, 1983
Injury Outcomes
1 injury (1 minor injury), 1 uninjured
Location
Hillsboro, OR
Aircraft
Enstrom F28F
Tail Number
N8622U
Injuries
Minor
Aircraft Damage
Substantial
NTSB Number
SEA84LA021
THE ACFT DID A HARD LANDING DURING AUTOROTATION AFTER THE ENGINE RAN ROUGH AND QUIT AT 250 FT AGL DURING TAKEOFF. THE PILOT HAD LEANED THE MIXTURE, HE SAID, PRIOR TO TAKEOFF AND HE WAS NOT SURE IF HE PUSHED THE MIXTURE TO FULL RICH WHEN THE ENGINE STARTED TO MISS AND RUN ROUGH. DURING AUTOROTATION HE MAINTAINED 50 MPH WITH LITTLE FLARE FOR LANDING. THE ENGINE WAS CHECKED AFTER THE ACCIDENT AND OPERATED NORMALLY. THE MIXTURE WAS SLOWLY TURNED TO SEE HOW IT WOULD BE WHEN THE ENGINE RAN ROUGH. IT WAS ABOUT 3 INCHES FROM FULL RICH.
Full Narrative
THE ACFT DID A HARD LANDING DURING AUTOROTATION AFTER THE ENGINE RAN ROUGH AND QUIT AT 250 FT AGL DURING TAKEOFF. THE PILOT HAD LEANED THE MIXTURE, HE SAID, PRIOR TO TAKEOFF AND HE WAS NOT SURE IF HE PUSHED THE MIXTURE TO FULL RICH WHEN THE ENGINE STARTED TO MISS AND RUN ROUGH. DURING AUTOROTATION HE MAINTAINED 50 MPH WITH LITTLE FLARE FOR LANDING. THE ENGINE WAS CHECKED AFTER THE ACCIDENT AND OPERATED NORMALLY. THE MIXTURE WAS SLOWLY TURNED TO SEE HOW IT WOULD BE WHEN THE ENGINE RAN ROUGH. IT WAS ABOUT 3 INCHES FROM FULL RICH.
Flight
Event TypeAccident
Event Time08:35 PST
Nearest Airport1nm ESE
Runway0
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftEnstrom F28F
Tail NumberN8622U
Aircraft CategoryHeli
DamageSubstantial
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsLycoming · HIO-360-F1AD · Reciprocating · 225
Seats3
People & Injuries
Injury Summary1 injury (1 minor injury), 1 uninjured
Fatal0
Serious0
Minor1
Uninjured1
Total2
Crew 1Age 35 · Second Class
Conditions
ConditionsVMC
LightDaylight
Wind110° @ 9 kt
Visibility20 sm
CeilingBroken clouds 5500 ft
Temperature / Dew Point0 C / 0 C
Altimeter29.00 inHg
Observation Time16:00
Weather SourceWFAC