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NTSB Report
June 20, 1989 · Cessna 172M · N80893
Boulder, CO
Overview
Report Status
Probable Cause
Event Type
Accident
Date
June 20, 1989
Injury Outcomes
No injuries (2 uninjured)
Location
Boulder, CO
Aircraft
Cessna 172M
Tail Number
N80893
Operator
Dakota Ridge Aviation
Injuries
None
Aircraft Damage
Substantial
NTSB Number
DEN89LA143
THE INSTRUCTOR (CFI) AND A PRIVATE RATED DUAL STUDENT WERE PERFORMING A FAMILIARIZATION FLIGHT. THE CFI SAID THE DUAL STUDENT MADE SEVERAL TOUCH AND GO LANDINGS ON RWY 26L, WITH WINDS ESTIMATED BY THE CFI AS BEING FROM 270 DEG AT 15 GUSTING 25 KTS. THE CFI REPORTED THAT DURING THE LAST TOUCHDOWN, THE ACFT WAS ANGLED TO THE LEFT. THE PLANE DEPARTED THE RWY TO THE LEFT AND THE HORIZONTAL STABILIZER STRUCK A RWY LIGHT, RESULTING IN SUBSTANTIAL DAMAGE.
NTSB Probable Cause
INADEQUATE COMPENSATION FOR WIND CONDITIONS BY THE (PRIVATE RATED) DUAL STUDENT AND HIS FAILURE TO MAINTAIN DIRECTIONAL CONTROL, WHICH RESULTED IN AN INADVERTENT GROUND SWERVE, AND INADEQUATE SUPERVISION BY THE INSTRUCTOR PILOT (CFI). A FACTOR RELATED TO THE ACCIDENT WAS: THE UNFAVORABLE WIND CONDITON.
Full Narrative
THE INSTRUCTOR (CFI) AND A PRIVATE RATED DUAL STUDENT WERE PERFORMING A FAMILIARIZATION FLIGHT. THE CFI SAID THE DUAL STUDENT MADE SEVERAL TOUCH AND GO LANDINGS ON RWY 26L, WITH WINDS ESTIMATED BY THE CFI AS BEING FROM 270 DEG AT 15 GUSTING 25 KTS. THE CFI REPORTED THAT DURING THE LAST TOUCHDOWN, THE ACFT WAS ANGLED TO THE LEFT. THE PLANE DEPARTED THE RWY TO THE LEFT AND THE HORIZONTAL STABILIZER STRUCK A RWY LIGHT, RESULTING IN SUBSTANTIAL DAMAGE.
Flight
Event TypeAccident
Event Time17:15 MDT
Nearest AirportBoulder Muni (0nm N)
Runway26L
Runway Length4100 ft
Runway Width75 ft
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftCessna 172M
Tail NumberN80893
Aircraft CategoryAir
DamageSubstantial
OperatorDakota Ridge Aviation
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsLycoming · O-320-E2D · Reciprocating · 150
Seats4
People & Injuries
Injury SummaryNo injuries (2 uninjured)
Fatal0
Serious0
Minor0
Uninjured2
Total2
Crew 1Age 30 · First Class
Conditions
ConditionsVMC
LightDaylight
Wind270° @ 15 kt, gusting 25 kt
Visibility40 sm
CeilingNone
Temperature / Dew Point0 C
Altimeter0
Weather SourcePILO