WPR14CA401

NTSB accident investigation · Piper PA 22 · Roundup, MT · May 23, 2014

Accident · No injuriesData collectionFinal report
Date
May 23, 2014, 12:30 local (18:30 UTC)
Place
Roundup, MT
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Takeoff
Aircraft
N3460APiper PA 22
Defining event
Takeoff-rejected takeoff: Runway excursion
Weather
Visual (VMC) · Day
Status
Completed · report April 7, 2015
Report
Approved by Office Director
NTSB office
Western Pacific Region
Parties
Federal Aviation Administration
FAA report
20140523024189A
Case key
90761

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 delayed action to abort the takeoff. Contributing to the accident was the pilot's inadequate preflight planning and a high density altitude.

Findings · 5

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.

Use of equip/info: use of equip/systemPersonnel issues › Task performance · PilotPiper PA-22: 3 casesAll aircraft: 1,391 casesProbable cause
Action: delayed actionPersonnel issues › Action/decision · PilotPiper PA-22: 1 caseAll aircraft: 894 casesProbable cause
Temp/humidity/pressure: high density altitudeEnvironmental issues › Conditions/weather/phenomena · Effect on operationPiper PA-22: 1 caseAll aircraft: 278 casesProbable cause
Planning/preparation: performance calculationsPersonnel issues › Task performance · PilotPiper PA-22: 1 caseAll aircraft: 114 casesProbable cause
Object/animal/substance: tree(s)Environmental issues › Physical environment · Not specifiedPiper PA-22: 2 casesAll aircraft: 933 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 takeoff from a 1,200-foot long turf airstrip, the airplane accelerated beyond a speed he anticipated for rotation and remained on the ground. Despite the pilot's attempt to abort the takeoff and stop the airplane, it overran the departure end of the runway and struck multiple trees before it came to rest upright. The fuselage and both wings were substantially damaged. The pilot stated that at the time of the accident, it was unseasonably warm and the degradation of the airplane's performance was significantly more than he had anticipated. The pilot reported no mechanical malfunctions or failures with the airplane that would have precluded normal operation.

Factual narrative

The pilot reported that during takeoff from a 1,200-foot long turf airstrip, the airplane accelerated beyond a speed he anticipated for rotation and remained on the ground. Despite the pilot's attempt to abort the takeoff and stop the airplane, it overran the departure end of the runway and struck multiple trees before it came to rest upright. The fuselage and both wings were substantially damaged. The pilot stated that at the time of the accident, it was unseasonably warm and the degradation of the airplane's performance was significantly more than he had anticipated. The pilot reported no preimpact mechanical malfunctions or failures with the airplane that would have precluded normal operation.

Aircraft

Registration
N3460A
Reported as
Piper PA 22 (UNDESIGNAT)
Category
Airplane
Serial number
22-1744
Built
1953
Engine
Lycoming O-320, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Operator
John Bake
Registered owner
White John M
Airworthiness certificate
Standard, Normal
Departed
None · Roundup, MT
Destination
None · Roundup, MT
Airport
None · Private Airstrip, runway 27, 1,200 × 40 ft, grass/turf

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
27
Injuries
None
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 3, Without waivers/limitations
Last flight review
October 5, 2012
Seat
Left
Restraint
Lap only
Flight hours
448 total · 8 in this make and model · 436 as pilot in command · 19 in the last 90 days · 2 in the last 30 days

Weather

Conditions
Visual (VMC) · Day
Wind
110° at 3 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
79 °F, dew point 48 °F
Altimeter
30.00 inHg
Observed at
KBIL, 38 nm away

Docket · 1

The files NTSB released with the investigation on April 2, 2015, on NTSB’s docket system: statements, records, photos and specialists’ reports. 2.1 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.