WPR13CA282

NTSB accident investigation · Cessna 170B · Rawlins, WY · June 23, 2013

Accident · No injuriesData collectionFinal report
Date
June 23, 2013, 10:00 local (16:00 UTC)
Place
Rawlins, WY
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Takeoff
Aircraft
N170CWCessna 170B
Defining event
Takeoff: Runway excursion
Weather
Visual (VMC) · Day
Status
Completed · report October 21, 2013
Report
Approved by Office Director
NTSB office
Western Pacific Region
Parties
FAA DEN FSDO
FAA report
20130623010849A
Case key
87271

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 delayed decision to abort the takeoff. Contributing to the accident was the pilot's inadequate preflight planning and a high density altitude, which resulted in a runway excursion and collision with 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.

Action: delayed actionPersonnel issues › Action/decision · PilotCessna 170B: 6 casesAll aircraft: 894 casesProbable cause
Temp/humidity/pressure: high density altitudeEnvironmental issues › Conditions/weather/phenomena · Effect on operationCessna 170B: 1 caseAll aircraft: 278 casesProbable cause
Planning/preparation: performance calculationsPersonnel issues › Task performance · PilotCessna 170B: 2 casesAll aircraft: 114 casesProbable cause
Terrain: rough terrainEnvironmental issues › Physical environment · Not specifiedCessna 170B: 4 casesAll aircraft: 442 cases

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 that during the takeoff, the tail wheel lifted off, but the airplane would not climb out of ground effect. He stated that he used all of the runway length, and did not reduce power in time to abort the takeoff. The airplane departed the runway surface into rough terrain, which resulted in substantial damage to the rudder, horizontal stabilizer, and both elevators. The pilot stated that there were no preimpact mechanical malfunctions or failures with the airplane or engine that would have precluded normal operation. He indicated that he was based at a sea level airport, and did not take into account the high density altitude (8,600 feet), which affected the airplane’s performance.

Factual narrative

The pilot reported that during the takeoff, the tail wheel lifted off, but the airplane would not climb out of ground effect. He stated that he used all of the runway length, and did not reduce power in time to abort the takeoff. The airplane departed the runway surface into rough terrain, which resulted in substantial damage to the rudder, horizontal stabilizer, and both elevators. The pilot stated that there were no preimpact mechanical malfunctions or failures with the airplane or engine that would have precluded normal operation. He indicated that he was based at a sea level airport, and did not take into account the high density altitude (8,600 feet), which affected the airplane’s performance.

Aircraft

Registration
N170CW
Reported as
Cessna 170B
Category
Airplane
Serial number
20411
Airframe hours
3,097
Engine
Cont Motor C145 SERIES, 145 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Operator
Hohmann Courtney P
Registered owner
Hohmann Courtney P
Airworthiness certificate
Standard, Normal
Last inspection
Annual · March 4, 2013
Departed
RWL · Rawlins, WY
Destination
3U2 · Johnson Creek, ID
Airport
RWL · Rawlins, runway 04, 7,008 × 100 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
68
Injuries
None
Certificates
Commercial, Private
Airplane ratings
Single-engine land, Single-engine sea
Instrument ratings
Airplane
Medical
Class 3, With waivers/limitations
Last flight review
March 4, 2013
Seat
Left
Flight hours
1,068 total · 206 in this make and model · 876 as pilot in command · 6 in the last 90 days · 3 in the last 30 days · 1 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
Variable at 3 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
63 °F, dew point 34 °F
Altimeter
30.09 inHg
Observed at
KRWL

Docket · 1

The files NTSB released with the investigation on September 12, 2013, on NTSB’s docket system: statements, records, photos and specialists’ reports. 2.3 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.