WPR11CA099

NTSB accident investigation · Diamond DA20C1 · Spanish Fork, UT · January 14, 2011

Accident · No injuriesData collectionFinal report
Date
January 13, 2011, 19:51 local (Jan 14, 2011, 02:51 UTC)
Place
Spanish Fork, UT
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N376DCDiamond DA20C1
Defining event
Landing-landing roll: Loss of control on ground
Weather
Visual (VMC) · Night
Status
Completed · report May 26, 2011
Report
Approved by Office Director
NTSB office
Western Pacific Region
Parties
FAA FSDO
Case key
78160

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 failure to maintain directional control during landing.

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/maintainedAll aircraft: 3,958 casesProbable cause
Use of equip/info: aircraft controlPersonnel issues › Task performance · PilotAll 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 stated that the approach and landing were uneventful through touchdown. He landed on the center of the runway, but the airplane started to drift to the left. He added right rudder with some brake pressure, which slowed the drift to the left, but did not completely stop it. He continued these inputs, but the left main tire caught a snow bank. After traveling a few hundred feet, the airplane spun 90 degrees into the snowbank. The operator reported that there were left tire skid marks as the airplane exited the runway, and opined that either the pilot or passenger had their foot on the left brake pedal. The operator issued a new caution to all of its instructors and pilots regarding the use of brakes on touchdown and rollout and reminded them to brief all front seat passengers to keep their feet off the rudder and brake pedals.

Factual narrative

The pilot stated that the approach and landing were uneventful through downwind, base, final approach, and touchdown. He landed on the center of the runway, but the airplane started to drift/pull to the left. He pressed right rudder with some brake pressure, which slowed the drift to the left, but did not totally stop it. He continued these inputs, but the left main tire caught a snow bank. After traveling a few hundred feet, the airplane spun 90 degrees into the snowbank. The operator reported that there were left tire skid marks as the airplane exited the runway, and opined that either the pilot or passenger had their foot on the left brake pedal. The operator issued a new caution to all of its instructors and pilots regarding the use of brakes on touchdown and roll out, and reminded them to brief all front seat passengers to keep their feet off the rudder and brake pedals.

Aircraft

Registration
N376DC
Reported as
Diamond DA20C1
Category
Airplane
Serial number
CO376
Airframe hours
2,237
Engine
Teledyne Continental motors IO-240-B, 125 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Operator
American Flight Center
Registered owner
Allairus LLC
Airworthiness certificate
Standard, Normal
Last inspection
Annual · November 20, 2010
Departed
CNY · Moab, UT
Destination
U77 · Spanish Fork, UT
Airport
U77 · Spanish Fork, runway 12, 5,700 × 100 ft, asphalt

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
43
Injuries
None
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 3, Without waivers/limitations
Last flight review
October 22, 2010
Seat
Left
Flight hours
92 total · 892 in this make and model · 25 as pilot in command · 23 in the last 90 days · 9 in the last 30 days

Weather

Conditions
Visual (VMC) · Night
Wind
Variable at 5 knots
Visibility
10 statute miles
Lowest ceiling
3,600 ft broken
Temperature
30 °F, dew point 25 °F
Observed at
KPVU

Docket · 1

The files NTSB released with the investigation on February 17, 2011, on NTSB’s docket system: statements, records, photos and specialists’ reports. 430 KB in all.