WPR12CA033

NTSB accident investigation · Casler Scott CX-4 · San Carlos, AZ · November 9, 2011

Accident · No injuriesData collectionFinal report
Date
November 9, 2011, 15:15 local (22:15 UTC)
Place
San Carlos, AZ
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Takeoff
Aircraft
N5089QCasler Scott CX-4
Defining event
Takeoff: Loss of control on ground
Weather
Visual (VMC) · Day
Status
Completed · report February 6, 2012
Report
Approved by Office Director
NTSB office
Western Pacific Region
Parties
Federal Aviation Administration
FAA report
20111109026609A
Case key
82278

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 inadequate directional control during takeoff.

Findings · 2

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.

Performance/control parameters: directional controlAircraft › Aircraft oper/perf/capability · Not attained/maintainedCasler Scott CX-4: 1 caseAll aircraft: 3,958 casesProbable cause
Use of equip/info: aircraft controlPersonnel issues › Task performance · PilotCasler Scott CX-4: 1 caseAll aircraft: 9,295 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 reported that, during takeoff from an asphalt runway, the tailwheel-equipped airplane experienced a gust of wind from the left, and he was able to correct for it and maintain directional control. As the takeoff roll continued, the airplane encountered a second gust of wind from the left, and the airplane began to veer to the right. Despite the pilot's control inputs, he was unable to maintain directional control, and the airplane exited the right side of the runway. Subsequently, the airplane impacted trees adjacent to the runway, which resulted in substantial damage to the fuselage. The pilot reported no preimpact mechanical malfunctions or failures with the airplane that would have precluded normal operation.

Factual narrative

The pilot reported that during takeoff from an asphalt runway, the tailwheel equipped airplane experienced a gust of wind from the left and he was able to correct for it and maintain directional control. As the takeoff roll continued, the airplane encountered a second gust of wind from the left and the airplane began to veer to the right. Despite the pilot's control inputs, he was unable to maintain directional control and the airplane exited the right side of the runway. Subsequently, the airplane impacted trees adjacent to the runway, which resulted in structural damage to the fuselage. The pilot reported no preimpact mechanical malfunctions or failures with the airplane that would have precluded normal operation.

Aircraft

Registration
N5089Q
Reported as
Casler Scott CX-4
Category
Airplane, amateur-built
Serial number
95
Engine
Ama/Expr UNKNOWN ENG, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Operator
Raymond Schafer
Registered owner
Raymond Schafer
Airworthiness certificate
Special, Experimental (Special)
Departed
San Carlos, AZ
Destination
Albuquerque, NM
Airport
4AZ7 · San Carlos Airport, runway 14, 7,335 × 70 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
77
Injuries
None
Certificate
Commercial
Airplane ratings
Multi-engine land, Single-engine land
Instrument ratings
Airplane, Helicopter
Medical
Class 3, With waivers/limitations
Seat
Front
Flight hours
9,000 total · 5 in this make and model

Weather

Conditions
Visual (VMC) · Day
Wind
260° at 7 knots
Visibility
45 statute miles
Lowest ceiling
None
Temperature
77 °F, dew point 36 °F
Altimeter
30.20 inHg
Observed at
IWA, 60 nm away

Docket · 1

The files NTSB released with the investigation on December 16, 2011, on NTSB’s docket system: statements, records, photos and specialists’ reports. 53 KB 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.