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NTSB Report
August 25, 1984 · Ultralight Ufm EAST Riser · UNREG
Cloverdale, CA
Overview
Report Status
Preliminary report
Event Type
Accident
Date
August 25, 1984
Injury Outcomes
1 injury (1 fatality)
Location
Cloverdale, CA
Aircraft
Ultralight Ufm EAST Riser
Tail Number
UNREG
Injuries
Fatal
Aircraft Damage
Substantial
NTSB Number
LAX84FU032
THE ULTRALIGHT WAS OBSERVED BY WITNESSES ON THE DOWNWIND LEG OF THE TRAFFIC PATTERN FOR LANDING. THE ACFT WAS FLYING LEVEL AT ABOUT 300 FT AGL WHEN IT STARTED A SERIES OF ROLLER-COASTER MANEUVERS WHICH INCREASED INTO A STEEP ASCENT AND NOSE OVER FOLLOWED BY A DESCENDING DIVE INTO THE GROUND. THE ENGINE NOISE, WHICH SOUNDED AS IF IT WERE AT FULL POWER, DID NOT CHANGE NOR DID ANY OF THE OBSERVERS SEE ANY OBJECTS FALL FROM THE ACFT. A PARACHUTE WORN BY THE PLT WAS NOT DEPLOYED. POST ACCIDENT EXAMINATION OF THE WRECKAGE DID NOT REVEAL ANY PREIMPACT FAILURES OF THE AIRFRAME OR ENGINE. THE AUTOPSY DID NOT REVEAL ANY PREIMPACT CONDITIONS WHICH WOULD HAVE INTERFERED WITH THE PLTS CONTROL OF THE VEHICLE.
Full Narrative
THE ULTRALIGHT WAS OBSERVED BY WITNESSES ON THE DOWNWIND LEG OF THE TRAFFIC PATTERN FOR LANDING. THE ACFT WAS FLYING LEVEL AT ABOUT 300 FT AGL WHEN IT STARTED A SERIES OF ROLLER-COASTER MANEUVERS WHICH INCREASED INTO A STEEP ASCENT AND NOSE OVER FOLLOWED BY A DESCENDING DIVE INTO THE GROUND. THE ENGINE NOISE, WHICH SOUNDED AS IF IT WERE AT FULL POWER, DID NOT CHANGE NOR DID ANY OF THE OBSERVERS SEE ANY OBJECTS FALL FROM THE ACFT. A PARACHUTE WORN BY THE PLT WAS NOT DEPLOYED. POST ACCIDENT EXAMINATION OF THE WRECKAGE DID NOT REVEAL ANY PREIMPACT FAILURES OF THE AIRFRAME OR ENGINE. THE AUTOPSY DID NOT REVEAL ANY PREIMPACT CONDITIONS WHICH WOULD HAVE INTERFERED WITH THE PLTS CONTROL OF THE VEHICLE.
Flight
Event TypeAccident
Event Time11:55 PDT
Nearest Airport0nm N
Runway0
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftUltralight Ufm EAST Riser
Tail NumberUNREG
Aircraft CategoryUltr
DamageSubstantial
Operating RulePart 103
Engines1
Engine TypeReciprocating
Engine DetailsCuyuna · ULRR215 17725 · Reciprocating · 20
Seats1
People & Injuries
Injury Summary1 injury (1 fatality)
Fatal1
Serious0
Minor0
Uninjured0
Total1
Crew 1Age 34 · Unknown
Conditions
ConditionsVMC
LightDaylight
Wind180° @ 6 kt
Visibility10 sm
CeilingNone
Temperature / Dew Point70 F / 0 C
Altimeter0
Weather SourceWIT