GAA19CA045

NTSB accident investigation · Piper PA18 · Denver, CO · October 27, 2018

Accident · No injuriesData collectionFinal report
Date
October 27, 2018, 12:00 local (18:00 UTC)
Place
Denver, CO
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N4500WPiper PA18
Defining event
Landing-landing roll: Loss of control on ground
Weather
Visual (VMC) · Day
Status
Completed · report September 26, 2019
Report
Approved by Office Director
NTSB office
General Aviation Accidents
Parties
FAA
FAA report
20181027020999A
Case key
98583

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 of the airplane during landing in gusting wind conditions.

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/maintainedPiper PA-18-150: 98 casesAll aircraft: 3,958 casesProbable cause
Wind: gustsEnvironmental issues › Conditions/weather/phenomena · Effect on operationPiper PA-18-150: 34 casesAll aircraft: 1,199 casesProbable cause
Use of equip/info: aircraft controlPersonnel issues › Task performance · Student/instructed pilotPiper PA-18-150: 160 casesAll 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 under instruction in the tailwheel-equipped airplane with 26-inch bush wheels reported that, during the approach, he saw indications of a headwind. He added that, when the airplane touched down on the main wheels, he noticed that the windsock had shifted and was indicating a direct left crosswind. Just before the tailwheel touched down, the left wing lifted, and he slowly added power to abort the landing. However, the airplane veered left, the right main landing gear collapsed, and the right wing struck the ground. The airplane exited the left side of the runway. The airplane sustained substantial damage to the right wing and the elevator. The airport's automated surface observing system reported that, about the time of the accident, the wind was from 280° at 25 knots, gusting to 30 knots. The pilot reported that there were no mechanical malfunctions or failures with the airplane that would have precluded normal operation.

Factual narrative

The pilot under instruction was in the tailwheel-equipped airplane with 26-inch bush wheels and reported that he observed indications of a head wind during the approach to the asphalt runway. He asserted that when the airplane touched down on the mains, he noticed that the windsock had shifted indicating a direct left crosswind. Just before the tailwheel touched down, the left wing lifted, and he slowly added power to abort the landing. However, the airplane veered to the left and the right main landing gear collapsed, and the right wing struck the ground. The airplane exited the left side of the runway. The airplane sustained substantial damage to the right wing and the elevator. The automated surface observing system at the airport reported that about the time of the accident, the wind was from 280° at 25 knots and gusting to 30 knots. The pilot reported that there were no mechanical malfunctions or failures with the airplane that would have precluded normal operation.

Aircraft

Registration
N4500W
Reported as
Piper PA18 (150)
Category
Airplane
Serial number
18-8009019
Built
1980
Airframe hours
3,725.61
Engine
Lycoming O-320-B2B, 160 horsepower, reciprocating
Damage
Substantial damage
Flight
Instructional · Part 91
Airworthiness certificate
Standard, Normal
Last inspection
Annual · February 15, 2019
Departed
APA · Denver, CO
Destination
APA · Denver, CO
Airport
APA · Centennial, runway 28, 4,800 × 75 ft, asphalt
Equipment
ADS-B, Electronic flight bag or handheld device

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 · 2

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
27
Injuries
None
Certificates
Commercial, Flight instructor
Airplane ratings
Single-engine land, Multi-engine land
Instrument ratings
Airplane
Medical
Class 1, Without waivers/limitations
Last flight review
February 24, 2019
Seat
Front
Restraint
4-point
Flight hours
390 total · 25 in this make and model · 290 as pilot in command
Role
Flight instructor
Age
28
Injuries
None
Certificates
Airline transport, Flight instructor
Airplane ratings
Single-engine land, Multi-engine land
Instrument ratings
Airplane
Medical
Class 1, With waivers/limitations
Last flight review
February 28, 2019
Seat
Rear
Restraint
4-point
Flight hours
1,527.5 total · 2.2 in this make and model · 1,492 as pilot in command

Weather

Conditions
Visual (VMC) · Day
Wind
280° at 25 knots, gusting 30
Visibility
10 statute miles
Lowest ceiling
None
Temperature
64 °F, dew point 32 °F
Altimeter
30.07 inHg
Observed at
KAPA

Docket · 2

The files NTSB released with the investigation on June 25, 2019, on NTSB’s docket system: statements, records, photos and specialists’ reports. 3.7 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 N4500W · 4

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