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NTSB Report
March 23, 1991 · Helio H391B · N289LM
Prescott, AZ
Overview
Report Status
Probable Cause
Event Type
Accident
Date
March 23, 1991
Injury Outcomes
No injuries (2 uninjured)
Location
Prescott, AZ
Aircraft
Helio H391B
Tail Number
N289LM
Operator
Dan Stover
Injuries
None
Aircraft Damage
Substantial
NTSB Number
LAX91LA144
THE CERTIFICATED COMMERCIAL PILOT/FLIGHT INSTRUCTOR WAS DEPARTING ON A PROPOSED CROSS COUNTRY FLIGHT. THE SURFACE WINDS WERE A DIRECT CROSSWIND FROM THE LEFT. WHEN THE TAIL LIFTED ON THE CONVENTIONAL GEAR AIRPLANE THE AIRPLANE VEERED TO THE LEFT. THE PILOT FAILED TO MAINTAIN DIRECTIONAL CONTROL AND THE AIRPLANE GROUND LOOPED WHEN IT EXITED THE RUNWAY AND STRUCK THE SOFT MUD ADJACENT TO THE RUNWAY. THE PILOT REPORTED THAT THE LEFT BRAKE WAS BEING APPLIED BY A MECHANICAL FAILURE. EXAMINATION OF THE BRAKE SYSTEM DISCLOSED NO EVIDENCE OF ANY PREEXISTING MALFUNCTIONS OR FAILURES. THE PILOT HAD ACCRUED ONLY 19 HOURS IN THE ACCIDENT AIRPLANE MAKE AND MODEL.
NTSB Probable Cause
THE PILOT'S FAILURE TO MAINTAIN DIRECTIONAL CONTROL AND IMPROPER USE OF THE FLIGHT CONTROLS. CONTRIBUTING TO THIS ACCIDENT WAS THE CROSS WIND AND SOFT TERRAIN, AND THE PILOT'S LACK OF EXPERIENCE IN THE AIRPLANE.
Full Narrative
THE CERTIFICATED COMMERCIAL PILOT/FLIGHT INSTRUCTOR WAS DEPARTING ON A PROPOSED CROSS COUNTRY FLIGHT. THE SURFACE WINDS WERE A DIRECT CROSSWIND FROM THE LEFT. WHEN THE TAIL LIFTED ON THE CONVENTIONAL GEAR AIRPLANE THE AIRPLANE VEERED TO THE LEFT. THE PILOT FAILED TO MAINTAIN DIRECTIONAL CONTROL AND THE AIRPLANE GROUND LOOPED WHEN IT EXITED THE RUNWAY AND STRUCK THE SOFT MUD ADJACENT TO THE RUNWAY. THE PILOT REPORTED THAT THE LEFT BRAKE WAS BEING APPLIED BY A MECHANICAL FAILURE. EXAMINATION OF THE BRAKE SYSTEM DISCLOSED NO EVIDENCE OF ANY PREEXISTING MALFUNCTIONS OR FAILURES. THE PILOT HAD ACCRUED ONLY 19 HOURS IN THE ACCIDENT AIRPLANE MAKE AND MODEL.
Flight
Event TypeAccident
Event Time11:01 MST
Nearest AirportErnest Love Field (0nm N)
Runway21
Runway Length7616 ft
Runway Width150 ft
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftHelio H391B
Tail NumberN289LM
Aircraft CategoryAir
DamageSubstantial
OperatorDan Stover
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsLycoming · GO-435-C2B2 · Reciprocating · 260
Seats4
People & Injuries
Injury SummaryNo injuries (2 uninjured)
Fatal0
Serious0
Minor0
Uninjured2
Total2
Crew 1Age 31 · Second Class
Conditions
ConditionsVMC
LightDaylight
Wind110° @ 8 kt
Visibility65 sm
CeilingNone
Temperature / Dew Point0 C / 0 C
Altimeter0
Observation Time18:04
Weather SourceWFAC