ANC19TA037

NTSB accident investigation · Piper PA19 · Skwentna, AK · July 21, 2019

Accident · Serious injuriesClass 4Final report
Date
July 20, 2019, 16:57 local (Jul 21, 2019, 00:57 UTC)
Place
Skwentna, AK
Injuries
1 serious, 1 uninjured
Damage
Substantial damage
Phase of flight
Approach
Aircraft
N6PFPiper PA19
Defining event
Approach-VFR go-around: Collision during takeoff/land
Weather
Visual (VMC) · Day
Status
Completed
Report
Approved by Office Director
Investigation class
Class 4 - Basic report with no Prelim publish
NTSB office
Alaska Regional Office
Parties
FAA FSDO
FAA report
20190720015579A
Case key
99907

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 loss of directional control during a go-around and his failure to assess the wind conditions appropriately before a landing attempt.

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: heading/courseAircraft › Aircraft oper/perf/capability · Not attained/maintainedPiper PA-19: 1 caseAll aircraft: 82 casesProbable cause
Wind: sudden wind shiftEnvironmental issues › Conditions/weather/phenomena · Effect on operationPiper PA-19: 1 caseAll aircraft: 114 casesProbable cause
Use of equip/info: aircraft controlPersonnel issues › Task performance · PilotPiper PA-19: 1 caseAll 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 reported that during an approach to land at a remote airstrip, while on short final, the head wind changed to a tail wind and he began to lose control authority of the airplane. He initiated a go-around and applied full throttle, and the airplane rolled left. The pilot was unable to control the airplane due to the slow airspeed, and the airplane impacted a tree on the left side of the runway. The fuselage and right wing sustained substantial damage and the passenger sustained serious injuries. The pilot reported that the airplane had no preimpact mechanical malfunctions or failures that would have precluded normal operation and that the accident could have been prevented had he taken more time to assess the weather conditions and ultimately decide not to land at the challenging airstrip.

Aircraft

Registration
N6PF
Reported as
Piper PA19 (L18C)
Category
Airplane
Serial number
18-2007
Built
1952
Airframe hours
1,851.7
Engine
Lycoming O-320, 160 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Airworthiness certificate
Standard, Normal; Standard, Utility
Last inspection
Annual · January 21, 2019
Departed
LHD · Anchorage, AK
Destination
Same as departure
Airport
1AK8 · Talaheim, runway 36, 950 × 35 ft, dirt
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
31
Injuries
None
Certificate
Commercial
Airplane ratings
Single-engine land, Single-engine sea
Instrument ratings
Airplane
Medical
Class 2, Without waivers/limitations
Seat
Left
Restraint
3-point
Flight hours
8,068.1 total · 3,735.1 in this make and model · 8,022.2 as pilot in command · 170.1 in the last 90 days · 50.9 in the last 30 days · 0 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
300° at 7 knots
Visibility
10 statute miles
Lowest ceiling
4,500 ft broken
Temperature
66 °F, dew point 55 °F
Altimeter
30.10 inHg
Observed at
PANC, 50 nm away

Docket · 3

The files NTSB released with the investigation on August 3, 2021, on NTSB’s docket system: statements, records, photos and specialists’ reports. 1.0 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.