WPR11CA249

NTSB accident investigation · Rusk Smith Super Cub · Heron, MT · June 3, 2011

Accident · Minor injuriesData collectionFinal report
Date
June 3, 2011, 14:20 local (20:20 UTC)
Place
Heron, MT
Injuries
1 minor
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N316BRRusk Smith Super Cub
Defining event
Landing-landing roll: Nose over/nose down
Weather
Visual (VMC) · Day
Status
Completed · report August 30, 2011
Report
Approved by Office Director
NTSB office
Western Pacific Region
Parties
Federal Aviation Administration
FAA report
20110603009799A
Case key
79298

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 floatplane's collision with a submerged object during a water landing.

Findings · 2

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.

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 from his airborne perspective, the river looked suitable for landing his float plane. He did not observe any sand bar or obstacles in the water. The pilot stated that his descent into the water was normal, and he landed with the current. Upon touchdown, the airplane which was only equipped with floats, immediately nosed over. It subsequently sank. The pilot said the front of the right float was ripped off in the landing, and the front windscreen broke open from the airframe. He opined that the floatplane impacted a submerged object. The pilot inflated his emergency flotation device and swam to shore.

Factual narrative

The pilot reported that from his airborne perspective, the river looked suitable for landing his float plane. He did not observe any sand bar or obstacles in the water. The pilot stated that his descent into the water was normal, and he landed with the current. Upon touchdown the airplane, which was only equipped with floats, immediately nosed over and sank. The pilot said the front of the right float was ripped off in the landing. The pilot inflated his emergency flotation device and swam to shore.

Aircraft

Registration
N316BR
Reported as
Rusk Smith Super Cub
Category
Airplane, amateur-built
Serial number
001
Airframe hours
119
Engine
Lycoming O-320-A1A, 180 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Airworthiness certificate
Special, Experimental (Special)
Last inspection
Condition · August 31, 2010 · 119 hours before
Departed
None · Seeley Lake, MT
Destination
None · Spokane, WA
Airport
None · Cabinet Gorge Reservoir, runway 29, 12,000 × 1,500 ft, water

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
53
Injuries
Minor
Certificates
Flight instructor, Airline transport
Airplane ratings
Single-engine land, Multi-engine land, Single-engine sea
Instrument ratings
Airplane
Medical
Class 1, With waivers/limitations
Last flight review
February 20, 2011
Seat
Front
Flight hours
19,364 total · 119 in this make and model · 266 in the last 90 days · 98 in the last 30 days · 2 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
300° at 12 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
52 °F
Altimeter
30.15 inHg

Docket · 1

The files NTSB released with the investigation on July 8, 2011, on NTSB’s docket system: statements, records, photos and specialists’ reports. 567 KB 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.