GAA18CA286

NTSB accident investigation · Boeing A75N1(PT17) · Eden Prairie, MN · May 16, 2018

Accident · No injuriesData collectionFinal report
Date
May 16, 2018, 10:00 local (15:00 UTC)
Place
Eden Prairie, MN
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N63794Boeing A75N1(PT17)
Defining event
Landing: Loss of control on ground
Weather
Visual (VMC) · Day
Status
Completed · report October 24, 2018
Report
Approved by Office Director
NTSB office
General Aviation Accidents
Parties
FAA
FAA report
20180516005469A
Case key
97277

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 in crosswind 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/maintainedBoeing A75N1(PT17): 27 casesAll aircraft: 3,958 casesProbable cause
Use of equip/info: aircraft controlPersonnel issues › Task performance · PilotBoeing A75N1(PT17): 33 casesAll aircraft: 9,295 casesProbable cause
Wind: crosswindEnvironmental issues › Conditions/weather/phenomena · Effect on operationBoeing A75N1(PT17): 6 casesAll aircraft: 1,008 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 a flight with a check pilot, while landing in crosswind conditions, the tailwheel-equipped biplane veered left. The pilot overcorrected with right rudder, and the biplane ground looped to the right. The biplane sustained substantial damage to the left wing. The pilot reported that there were no preaccident mechanical failures or malfunctions with the biplane that would have precluded normal operation. The automated weather observation system located at the accident airport reported that, about the time of the accident, the wind was from 230° at 7 knots. The pilot landed the airplane on runway 28R.

Factual narrative

The pilot reported that, during a flight with a check-pilot, while landing in crosswind conditions, the tailwheel-equipped biplane veered to the left. The pilot overcorrected with right rudder and the biplane ground looped to the right. The biplane sustained substantial damage to the left wing. The pilot reported that there were no preaccident mechanical failures or malfunctions with the biplane that would have precluded normal operation. The automated weather observation system located at the accident airport reported that, about the time of the accident, the wind was from 230° at 7 knots. The pilot landed on runway 28R.

Aircraft

Registration
N63794
Reported as
Boeing A75N1(PT17) (UNDESIGNAT)
Category
Airplane
Serial number
75-3739
Built
1942
Airframe hours
1,559.59
Engine
Continental W670-6N, 220 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Airworthiness certificate
Standard, Aerobatic; Standard, Normal
Last inspection
Annual · May 4, 2018
Departed
FCM · Minneapolis, MN
Destination
FCM · Minneapolis, MN
Airport
FCM · Flying Cloud, runway 28R, 3,898 × 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 · 2

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
73
Injuries
None
Certificates
Commercial, Flight instructor
Airplane ratings
Single-engine land
Instrument ratings
Airplane
Medical
Class 2, Without waivers/limitations
Last flight review
October 1, 2016
Seat
Rear
Flight hours
4,030 total · 3,880 as pilot in command · 30 in the last 90 days · 15 in the last 30 days
Role
Check pilot
Injuries
None
Certificates
Airline transport, Flight instructor
Airplane ratings
Single-engine land, Single-engine sea, Multi-engine land
Medical
Class 1, Unknown
Seat
Front
Restraint
4-point
Flight hours
8,000 total

Weather

Conditions
Visual (VMC) · Day
Wind
230° at 7 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
72 °F, dew point 50 °F
Altimeter
29.97 inHg
Observed at
KFCM, 1 nm away

Docket · 3

The files NTSB released with the investigation on August 2, 2018, on NTSB’s docket system: statements, records, photos and specialists’ reports. 2.9 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.