WPR11CA295

NTSB accident investigation · Cessna 172S · Price, UT · June 27, 2011

Accident · No injuriesData collectionFinal report
Date
June 27, 2011, 07:40 local (13:40 UTC)
Place
Price, UT
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Takeoff
Aircraft
N674SPCessna 172S
Defining event
Takeoff: Collision during takeoff/land
Weather
Visual (VMC) · Day
Status
Completed · report October 4, 2011
Report
Approved by Office Director
NTSB office
Western Pacific Region
Parties
Federal Aviation Administration
FAA report
20110627011119A
Case key
80922

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.

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Probable cause

The pilot's decision to attempt a takeoff at a density altitude outside of the takeoff performance envelope of the aircraft along with using an aircraft flap setting higher than the manufacture's recommended setting for takeoff.

Findings · 5

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.

Action: incorrect action selectionPersonnel issues › Action/decision · PilotAll aircraft: 397 casesProbable cause
Info processing/decision: decision making/judgmentPersonnel issues › Action/decision · PilotAll aircraft: 3,098 casesProbable cause
Wing structure: trailing edge flapsAircraft › Aircraft structures · Incorrect use/operationAll aircraft: 33 casesProbable cause
Temp/humidity/pressure: high density altitudeEnvironmental issues › Conditions/weather/phenomena · Effect on operationAll aircraft: 278 casesProbable cause
Aircraft capability: climb capabilityAircraft › Aircraft oper/perf/capability · Capability exceededAll aircraft: 183 casesProbable cause

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 took off for a training flight to a dirt strip approximately 50 miles to the east. Upon landing at the strip the pilot decided to initiate a short/soft field take off down the 3,600-foot-long runway. The pilot reported that he took off with 20 degrees of flaps and was never able to get more than 10 feet off the runway surface area. At the end of the runway the pilot noticed two 3-4 foot high dirt berms. He pulled back on the yoke, missing the first berm, but the airplane settled back down and struck the second one. The resulting impact caused the aircraft to nose over and come to a rest inverted. The airplane's pilot operating handbook (POH) states that soft or rough field takeoffs should be performed with no more than 10 degrees of flaps. Furthermore the airport's density altitude at the time of the accident was calculated to be approximately 10,000 feet, which is 2,000 feet above the maximum altitude listed in the takeoff performance charts in the POH. The pilot reported no mechanical issues with the airplane that would have precluded normal operation.

Factual narrative

The pilot took off for a training flight to a dirt strip approximately 50 miles to the east. Upon landing at the strip the pilot decided to initiate a short/soft field take off down the 3,600-foot-long runway. The pilot reported that he took off with 20 degrees of flaps and was never able to get more than 10 feet off the runway surface area. At the end of the runway the pilot noticed two 3-4 foot high dirt berms. He pulled back on the yoke, missing the first berm, but the airplane settled back down and struck the second one. The resulting impact caused the aircraft to nose over and come to a rest inverted. The airplanes pilot operating handbook (POH) states that soft or rough field takeoffs should be performed with no more than 10 degrees of flaps. Furthermore the airport's density altitude at the time of the accident was calculated to be approximately 10,000 feet, which is 2,000 feet above the maximum altitude listed in the takeoff performance charts in the POH. The pilot reported no mechanical issues with the airplane prior to the accident.

Aircraft

Registration
N674SP
Reported as
Cessna 172S
Category
Airplane
Serial number
172S8087
Engine
Lycoming IO-360 SER, 180 horsepower, reciprocating
Damage
Substantial damage
Flight
Instructional · Part 91
Operator
Arrow West Aviation Inc
Registered owner
Arrow West Aviation Inc
Airworthiness certificate
Standard, Utility; Standard, Normal
Last inspection
100 hour · February 1, 2011 · 27 hours before
Departed
KPUC · Price, UT
Destination
KPUC · Price, UT
Airport
KPUC · Price Carbon County

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
34
Injuries
None
Certificates
Commercial, Flight instructor
Airplane ratings
Single-engine land, Multi-engine land
Instrument ratings
Airplane
Medical
Class 1
Last flight review
August 15, 2009
Seat
Left
Flight hours
1,157 total · 318 in this make and model · 1,029 as pilot in command · 70 in the last 90 days · 19 in the last 30 days · 1 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Visibility
10 statute miles
Lowest ceiling
None
Temperature
64 °F, dew point 25 °F
Altimeter
29.97 inHg
Observed at
kpuc, 55 nm away

Docket · 3

The files NTSB released with the investigation on July 22, 2011, on NTSB’s docket system: statements, records, photos and specialists’ reports. 4.1 MB in all.

FAA reports on this event · 1

The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.