WPR11LA436

NTSB accident investigation · Tubbs S/Performance PA-18 225DD · Mile Hi Landing Strip, ID · August 25, 2011

Accident · No injuriesLimited investigationFinal report
Date
August 25, 2011, 10:30 local (16:30 UTC)
Place
Mile Hi Landing Strip, ID
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N727WWTubbs S/Performance PA-18 225DD
Defining event
Landing-flare/touchdown: Landing gear collapse
Weather
Visual (VMC) · Day
Status
Completed · report December 27, 2011
Report
Approved by Office Director
NTSB office
Western Pacific Region
Parties
Federal Aviation Administration
FAA report
20110825024749A
Case key
81721

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 collapse of the left landing gear during landing for undetermined reasons.

Findings · 1

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.

Not determinedNot determined › Not determined · Unknown/Not determinedTubbs S/Performance Air PA 18-225 DD: 2 casesAll aircraft: 2,247 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 left landing gear collapsed during landing on a remote grass/turf airstrip. After the landing gear collapsed, the airplane veered to the left and impacted a tree. The pilot stated that there were no mechanical malfunctions or anomalies with the airplane during the flight. The reason for the landing gear collapse was not determined.

Factual narrative

On August 25, 2011, at 1030 mountain daylight time, a Tubbs S/Performance Air PA-18 225DD, N727WW, landing gear collapsed during landing at Mile Hi Landing Strip, Idaho. The private pilot operated the airplane under the provisions of Title 14 Code of Federal Regulations Part 91. The pilot was not injured, and the airplane was substantially damaged. Visual meteorological conditions prevailed, and no flight plan had been filed. The flight originated at Big Creek, Idaho, at 1000. The pilot stated that the left-hand landing gear collapsed during landing on runway 19 at Mile Hi Landing Strip. After the landing gear collapsed, the airplane veered to the left and impacted a tree. The landing strip was an unimproved grass/turf strip located in a remote area. The pilot stated that the airplane and engine had no mechanical failures or malfunctions during the flight.

Aircraft

Registration
N727WW
Reported as
Tubbs S/Performance PA-18 225DD
Category
Airplane, amateur-built
Serial number
PA-0204
Airframe hours
675
Engine
Lycoming O-360-C4P, 180 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Operator
John Gregory
Registered owner
Puddlejumpers LLC
Airworthiness certificate
Special, Experimental (Special)
Last inspection
Condition · July 6, 2011
Departed
KU60 · Yellow Pine, ID
Destination
Mile High Ranch, ID
Airport
Mile Hi, runway 19, 1,100 × 75 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
71
Injuries
None
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 3, With waivers/limitations
Last flight review
November 4, 2010
Seat
Front
Flight hours
6,170 total · 2,170 in this make and model · 6,170 as pilot in command · 67 in the last 90 days · 34 in the last 30 days · 5 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Visibility
10 statute miles
Lowest ceiling
None
Temperature
64 °F

Docket · 2

The files NTSB released with the investigation on November 22, 2011, on NTSB’s docket system: statements, records, photos and specialists’ reports. 1.7 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 N727WW · 1

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