- Date
- July 21, 2008, 15:40 local (21:40 UTC)
- Place
- Salmon, ID
- Injuries
- 1 uninjured
- Damage
- Substantial damage
- Phase of flight
- Initial climb
- Aircraft
- N9912QCessna 172
- Defining event
- Initial climb: Loss of control in flight
- Weather
- Visual (VMC) · Day
- Status
- Completed · report January 22, 2009
- Report
- Approved by Office Director
- Parties
- Federal Aviation Administration
- FAA report
- 20080721840599A
- Case key
- 68494
From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.
On this page
Probable cause
The pilot's decision to take off in known adverse wind conditions that lead to an encounter with a windshear, the resulting inability of the pilot to maintain airspeed, and a stall/mush into the terrain.
Findings · 4
NTSB’s coded findings. Those marked are part of the probable cause; the rest are factors or other findings. Under each, the cases with the same finding.
Sequence of events
The events NTSB coded, in order, by phase of flight. The defining event is the one that best describes the accident. Under each, the cases with the same event anywhere in their sequence.
Analysis
The pilot reported gusty wind conditions prior to his takeoff. During the takeoff initial climb out, the wind shifted and the airplane was not able to maintain altitude. The airplane landed hard beyond the departure end of the runway and the nose landing gear folded back into the airplane causing damage to the firewall. In the pilot's written statement he reported that he should not have been in such a hurry to take off and that if he would have departed 10 minutes earlier or later the winds would not have affected the takeoff. Archived AWOS weather for the airport at 1535 reported winds from 190 degrees at 7 knots. At 1515 winds were reported to be from 210 degrees at 8 knots gusting to 32 knots. Winds reported at 1555 were from 250 degrees at 14 knots gusting to 31 knots; with the winds varying in direction from 210 degrees to 280 degrees.
Factual narrative
The pilot stated that shortly after takeoff, the airplane was struck by "severe windshear," which "slammed" the airplane into the ground at the departure end of the runway. He reported that the airport's AWOS (Automated Weather Observation System) was not working at the time of the accident. He taxied his airplane toward the runway, where he waited for an airplane to land. He taxied onto the active runway and departed for a local area airport. The pilot established the airplane on a best rate of climb (Vy) for the initial climb out. About 100 feet above the ground, the airplane encountered the windshear. The pilot stated that his first reaction was to pull back, and maintain the Vy airspeed. Eventually he had to change to the best angle of climb (Vx) to stay in the air. The airplane was not able to maintain altitude and impacted the ground. The nose landing gear folded back into the airplane, which caused structural damage to the firewall. The pilot stated that prior to takeoff the winds were "gusting in various directions of differing magnitude." The departure sock showed variable light gusts. Shortly after takeoff the windsock switched directions and intensity. The pilot reported that the winds were variable at 17 knots gusting to 18 knots.
Archived AWOS weather for the airport at 1535 reported winds from 190 degrees at 7 knots. At 1515, winds were reported to be from 210 degrees at 8 knots, gusting to 32 knots. Winds reported at 1555 were from 250 degrees at 14 knots, gusting to 31 knots; with variable winds from 210 degrees to 280 degrees.
In the Recommendation (How could this accident have been prevented?) section of the National Transportation Safety Board Pilot/Operator Aircraft Accident/Incident Report (NTSB Form 6120.1), the pilot stated that he should not have been in a hurry and waited for the winds to become consistent. He further reported that if he had departed 10 minutes earlier or later it would likely have made a difference on takeoff.
Aircraft
- Registration
- N9912Q
- Reported as
- Cessna 172 (M)
- Category
- Airplane
- Serial number
- 17265856
- Airframe hours
- 8,301
- Engine
- Lycoming O-320, 150 horsepower, reciprocating
- Damage
- Substantial damage
- Flight
- Personal · Part 91
- Operator
- Scott Patrick
- Registered owner
- Scott Patrick
- Airworthiness certificate
- Standard, Utility; Standard, Normal
- Last inspection
- Annual · February 1, 2008 · 33 hours before
- Departed
- SMN · Salmon, ID
- Destination
- SMN · Salmon, ID
- Airport
- SMN · Lemhi County, runway 35, 5,150 × 60 ft, asphalt
Matched to the registry by N-number and the event date; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.
Flight crew
As NTSB recorded them. NTSB leaves out names.
- Role
- Pilot
- Age
- 23
- Injuries
- None
- Certificate
- Commercial
- Airplane ratings
- Single-engine land, Single-engine sea
- Instrument ratings
- Airplane
- Medical
- Class 2, Without waivers/limitations
- Last flight review
- September 1, 2007
- Seat
- Left
- Flight hours
- 1,580 total · 500 in this make and model · 1,450 as pilot in command · 220 in the last 90 days · 90 in the last 30 days · 8 in the last 24 hours
Weather
- Conditions
- Visual (VMC) · Day
- Wind
- 190° at 7 knots
- Visibility
- 9 statute miles
- Lowest ceiling
- None
- Temperature
- 90 °F, dew point 46 °F
- Altimeter
- 29.88 inHg
- Observed at
- SMN
FAA reports on this event · 1
The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.
Other investigations on N9912Q · 1
Matched to the same aircraft by N-number and date.