GAA17CA125

NTSB accident investigation · Great Lakes 2T1A · Canon City, CO · January 28, 2017

Accident · No injuriesData collectionFinal report
Date
January 28, 2017, 14:45 local (21:45 UTC)
Place
Canon City, CO
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N16GLGreat Lakes 2T1A
Defining event
Landing: Loss of control on ground
Weather
Visual (VMC) · Day
Status
Completed · report April 4, 2017
Report
Approved by Office Director
NTSB office
General Aviation Accidents
Parties
FAA
FAA report
20170128002339A
Case key
94664

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 failure to maintain directional control during the landing roll. Contributing to the accident was the pilot’s unstabilized approach.

Findings · 3

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/maintainedGreat Lakes 2T-1A-2: 4 casesAll aircraft: 3,958 casesProbable cause
Use of equip/info: aircraft controlPersonnel issues › Task performance · PilotGreat Lakes 2T-1A-2: 5 casesAll aircraft: 9,295 casesProbable cause
Performance/control parameters: descent/approach/glide pathAircraft › Aircraft oper/perf/capability · Not attained/maintainedGreat Lakes 2T-1A-2: 1 caseAll aircraft: 809 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 of the tailwheel-equipped biplane reported that she extended the downwind leg due to other aircraft in the traffic pattern and that, while on the extended final, she put the biplane in a "slip." During the slip, the windsock was out of view. She further reported that, during the landing flare, she noticed that the "ground-speed" was higher than normal and that "about 800 ft" after touchdown, the biplane "violently swerved to the right." She attempted to recover with rudder inputs; however, the biplane veered off the runway and came to rest inverted. The biplane sustained substantial damage to the empennage. The pilot reported that there were no preaccident mechanical failures or malfunctions with the airframe or engine that would have precluded normal operation.

Factual narrative

The pilot of the tailwheel equipped biplane reported that she extended her downwind due to other aircraft in the traffic pattern, and that while on the extended final she put the biplane in a "slip". During the slip, she reported that the windsock was out of view. She further reported that during the landing flare she noticed her "ground-speed" was higher than normal, and that "about 800 ft." after touchdown, the biplane "violently swerved to the right". She attempted to recover with rudder inputs, however the biplane veered off the runway and came to rest inverted. The biplane sustained substantial damage to the empennage. The pilot reported there were no pre-accident mechanical failures or malfunctions with the airframe or engine that would have precluded normal operation.

Aircraft

Registration
N16GL
Reported as
Great Lakes 2T1A (2)
Category
Airplane
Serial number
0772
Built
1977
Airframe hours
1,124.3
Engine
Lycoming AEIO-360-B1G6, 180 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Airworthiness certificate
Standard, Aerobatic
Last inspection
Annual · August 19, 2016
Departed
1V6 · Canon City, CO
Destination
1V6 · Canon City, CO
Airport
1V6 · Fremont County, runway 11, 5,399 × 75 ft, asphalt
Equipment
None

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
58
Injuries
None
Certificate
Commercial
Airplane ratings
Single-engine land
Medical
Class 2, With waivers/limitations
Last flight review
July 2, 2015
Seat
Rear
Restraint
5-point
Flight hours
779 total · 62 in this make and model · 639 as pilot in command · 25 in the last 90 days · 6 in the last 30 days · 1 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
Calm
Visibility
10 statute miles
Lowest ceiling
None
Temperature
55 °F, dew point 9 °F
Altimeter
30.23 inHg
Observed at
K1V6, 22 nm away

Docket · 2

The files NTSB released with the investigation on March 15, 2017, on NTSB’s docket system: statements, records, photos and specialists’ reports. 4.3 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.

Other investigations on N16GL · 1

Matched to the same aircraft by N-number and date.