WPR14CA221

NTSB accident investigation · Boeing A75N1(PT17) · McCall, ID · June 3, 2014

Accident · No injuriesData collectionFinal report
Date
June 3, 2014, 12:00 local (18:00 UTC)
Place
McCall, ID
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N505VBoeing A75N1(PT17)
Defining event
Landing-landing roll: Loss of control on ground
Weather
Visual (VMC) · Day
Status
Completed · report September 24, 2014
Report
Approved by Office Director
NTSB office
Western Pacific Region
Parties
FAA FSDO
FAA report
20140603008309A
Case key
89349

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

Loss of directional control during landing rollout due to a wind disturbance, which resulted in a runway veeroff and impact with a ditch.

Findings · 4

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: variable windEnvironmental issues › Conditions/weather/phenomena · Effect on operationBoeing A75N1(PT17): 2 casesAll aircraft: 113 cases
Terrain: sloped/uneven terrainEnvironmental issues › Physical environment · Contributed to outcomeBoeing A75N1(PT17): 1 caseAll aircraft: 270 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 owner-pilot departed his home airport in the tailwheel-equipped airplane for a personal local flight. He spent about 45 minutes conducting airwork, and then returned for some practice landings and takeoffs, the first three of which were uneventful. According to the pilot, the ASOS (automated surface observing system) broadcast stated that the wind was from 220 degrees at 10 knots, so he selected runway 16 for the fourth landing. The pilot reported that he lost directional control during the landing rollout due to a wind disturbance. The airplane exited the east side of the runway, struck a ditch, and upended onto its nose. The right outboard wing was substantially damaged. Initial review of the recorded hourly wind data suggested that the winds were variable. The high resolution wind data revealed that the wind speed and direction both varied significantly in the minutes surrounding the accident time. The pilot reported no preimpact mechanical malfunctions or failures with the airplane that would have precluded normal operation.

Factual narrative

The owner-pilot departed his home airport in the tailwheel-equipped airplane for a personal local flight. He spent about 45 minutes conducting airwork, and then returned for some practice landings and takeoffs, the first three of which were uneventful. According to the pilot, the ASOS (automated surface observing system) broadcast stated that the wind was from 220 degrees at 10 knots, so he selected runway 16 for the fourth landing. The pilot reported that he lost directional control during the landing rollout due to a wind disturbance. The airplane exited the east side of the runway, struck a ditch, and upended onto its nose. The right outboard wing was substantially damaged. Initial review of the recorded hourly wind data suggested that the winds were variable. The high resolution wind data revealed that the wind speed and direction both varied significantly in the minutes surrounding the accident time. The pilot reported no preimpact mechanical malfunctions or failures with the airplane that would have precluded normal operation.

Aircraft

Registration
N505V
Reported as
Boeing A75N1(PT17)
Category
Airplane
Serial number
75-2732
Built
1943
Airframe hours
3,251
Engine
Continental 66706N, 220 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Airworthiness certificate
Standard, Aerobatic
Last inspection
Annual · November 1, 2013 · 12 hours before
Departed
MYL · McCall, ID
Destination
MYL · McCall, ID
Airport
MYL · McCall Municipal, runway 16, 6,107 × 75 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
78
Injuries
None
Certificate
Commercial
Airplane ratings
Single-engine land
Medical
Class 3, With waivers/limitations
Last flight review
August 28, 2013
Seat
Rear
Restraint
4-point
Flight hours
3,200 total · 169 in this make and model · 2,518 as pilot in command · 8 in the last 90 days · 8 in the last 30 days

Weather

Conditions
Visual (VMC) · Day
Wind
Variable at 6 knots, gusting 15
Visibility
10 statute miles
Lowest ceiling
None
Temperature
66 °F, dew point 30 °F
Altimeter
29.94 inHg
Observed at
MYL

Docket · 9

The files NTSB released with the investigation on September 4, 2014, on NTSB’s docket system: statements, records, photos and specialists’ reports. 5.9 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.