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NTSB Report
February 26, 2009 · Cessna 172N · N737KR
Broomfield, CO
Overview
Report Status
Final with probable cause
Event Type
Accident
Date
February 26, 2009
Injury Outcomes
No injuries (1 uninjured)
Location
Broomfield, CO
Aircraft
Cessna 172N
Tail Number
N737KR
Operator
Alliance Flight Training
Injuries
None
Aircraft Damage
Substantial
NTSB Number
CEN09CA181
The pilot was taxiing into position for takeoff when a wind gust, reported by the tower, of 52 knots lifted the right wing of the airplane. The right wing continued to rotate the aircraft and move it to the left on the ramp. The pilot attempted to maintain control but was unsuccessful and the aircraft rolled inverted. The pilot was able to egress unassisted and was not injured. Weather forecast at the 40 minutes prior to the accident indicated forecast winds 250 degrees at 15 knots. At 7 minutes after the accident the updated weather observation showed winds from 260 degrees at 38 knots with gusts to 52 knots.
NTSB Probable Cause
The pilot and airplane's inability to compensate for the unforecasted gusting wind conditions.
Full Narrative
The pilot was taxiing into position for takeoff when a wind gust, reported by the tower, of 52 knots lifted the right wing of the airplane. The right wing continued to rotate the aircraft and move it to the left on the ramp. The pilot attempted to maintain control, but was unsuccessful and the aircraft rolled inverted. The pilot was able to egress unassisted and was not injured. Weather forecast at the 40 minutes prior to the accident indicated forecast winds 250 degrees at 15 knots. At 7 minutes after the accident the updated weather observation showed winds from 260 degrees at 38 knots with gusts to 52 knots.
Flight
Event TypeAccident
Event Time10:40 MST
Nearest AirportRocky Mountain Metropolitan (0nm)
Flight Plan FiledNone
Flight Plan ActivatedNo
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftCessna 172N
Tail NumberN737KR
Aircraft CategoryAir
DamageSubstantial
OperatorAlliance Flight Training
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsLycoming · O-320 SERIES · Reciprocating · 180
Seats4
People & Injuries
Injury SummaryNo injuries (1 uninjured)
Fatal0
Serious0
Minor0
Uninjured1
Total1
Crew 1Age 62 · First Class · None
Conditions
ConditionsVMC
LightDaylight
Wind260° @ 38 kt, gusting 52 kt
Visibility40 sm
CeilingNone
Temperature / Dew Point54 / 59
Altimeter30.00 inHg
Observation Time17:47
Weather SourceWFAC