GAA18CA558

NTSB accident investigation · Piper PA18 · Kenai, AK · September 13, 2018

Accident · No injuriesData collectionFinal report
Date
September 13, 2018, 11:10 local (19:10 UTC)
Place
Kenai, AK
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N7184BPiper PA18
Defining event
Landing: Loss of control on ground
Weather
Visual (VMC) · Day
Status
Completed · report March 18, 2019
Report
Approved by Office Director
NTSB office
General Aviation Accidents
Parties
FAA
FAA report
20180913013489A
Case key
98305

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 improper landing flare, which resulted in a hard, bounced landing and subsequent loss of directional control on an unimproved airstrip.

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/maintainedPiper PA-18-150: 98 casesAll aircraft: 3,958 casesProbable cause
Use of equip/info: aircraft controlPersonnel issues › Task performance · PilotPiper PA-18-150: 160 casesAll aircraft: 9,295 casesProbable cause
Terrain: sloped/uneven terrainEnvironmental issues › Physical environment · Effect on operationPiper PA-18-150: 10 casesAll aircraft: 270 cases
Object/animal/substance: tree(s)Environmental issues › Physical environment · Contributed to outcomePiper PA-18-150: 19 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 approach, he made a relatively steep descent with full flaps. During touchdown on the unimproved airstrip, the tailwheel-equipped airplane landed hard and bounced. The airplane touched down again angled to the left and veered off the runway to the left during the roll on the uneven, dirt surface. Subsequently, the left wing impacted a tree, and the airplane pivoted into an adjacent tree. The airplane sustained substantial damage to the left wing and fuselage. The pilot reported that there were no preaccident mechanical failures or malfunctions with the airplane that would have precluded normal operation.

Factual narrative

The pilot reported that, the purpose of the flight was to land at, and then clear an unimproved airstrip, by removing small trees and brush. During approach he made a relatively steep descent with full flaps. During the touch down, the tailwheel-equipped airplane landed hard and bounced. The airplane touched down again angled to the left and veered off the runway to the left during the roll on the uneven, dirt surface. Subsequently, the left wing impacted a tree and the airplane pivoted into an adjacent tree. The airplane sustained substantial damage to the left wing and fuselage. The pilot reported that there were no preaccident mechanical failures or malfunctions with the airplane that would have precluded normal operation.

Aircraft

Registration
N7184B
Reported as
Piper PA18 (150)
Category
Airplane
Serial number
18-5224
Built
1956
Airframe hours
3,754
Engine
Lycoming O-320-A2A, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Airworthiness certificate
Standard, Normal
Last inspection
Annual · September 28, 2017
Departed
ENA · Kenai, AK
Destination
Kenai, AK
Equipment
Handheld GPS

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
70
Injuries
None
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 3, With waivers/limitations
Last flight review
August 31, 2018
Seat
Front
Restraint
3-point
Flight hours
1,045 total · 773 in this make and model · 1,025 as pilot in command · 38 in the last 90 days · 15 in the last 30 days · 1 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
40° at 7 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
61 °F, dew point 48 °F
Altimeter
30.07 inHg
Observed at
PALV, 12 nm away

Docket · 2

The files NTSB released with the investigation on December 12, 2018, on NTSB’s docket system: statements, records, photos and specialists’ reports. 1.1 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.

Other investigations on N7184B · 2

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