N218RD

MINR
Serious

DEHAVILLAND DHC-2 MK.IS/N: 50

Accident Details

Date
Saturday, May 22, 2021
NTSB Number
CEN21LA244
Location
Oak Island, MN
Event ID
20210601103181
Coordinates
49.314838, -94.857267
Aircraft Damage
MINR
Highest Injury
Serious
Fatalities
0
Serious Injuries
1
Minor Injuries
0
Uninjured
2
Total Aboard
3

Probable Cause and Findings

The failure of an O-ring in the landing gear system, which resulted in the inadvertent extension of the main wheel in the amphibious float. Contributing to the accident was the pilot’s decision to depart with a known hydraulic leak in the landing gear system.

Aircraft Information

Registration
Make
DEHAVILLAND
Serial Number
50
Engine Type
Reciprocating
Year Built
1949
Model / ICAO
DHC-2 MK.IDH2T
Aircraft Type
Fixed Wing Single Engine
No. of Engines
1
Seats
8
FAA Model
DHC-2 MK.I

Registered Owner (Current)

Name
SUNSET FLYING SERVICE LLC
Address
837 APOLLO RD
City
EAGAN
State / Zip Code
MN 55121-2243
Country
United States

Analysis

On May 22, 2021, about 1830 central daylight time, a de Havilland DHC-2, N218RD, sustained minor damage when it was involved in an accident near Oak Island, Minnesota. The pilot and one passenger were not injured, and one passenger sustained serious injuries. The airplane was operated as a Title 14 Code of Federal Regulations Part 91 personal flight.

According to local authorities who spoke with the pilot/owner after the accident, before the flight, the pilot added hydraulic fluid to the reservoir due to a known leak in the amphibious float landing gear system. At some point during the flight, the left rear wheel extended and protruded from the float. The pilot was unaware of the wheel position and landed on the water near his residence. During the water landing, the extended wheel contacted the water, and the airplane’s nose and propeller assembly immediately went into the water. The pilot and passengers exited the airplane, and the airplane subsequently flipped over. During the accident sequence, one passenger sustained vertebrae fractures.

Due to the remote accident location, the airplane was not examined by the National Transportation Safety Board or the Federal Aviation Administration. The pilot provided photos of the landing gear system problem area and a short video demonstrating the leak in the system. According to the pilot, the leak was the result of a failed o-ring in the lower hydraulic fitting on the jack assembly.

The pilot reported the airplane’s maintenance records were lost in the water following the accident. The most recent maintenance could not be determined.

Data Source

Data provided by the National Transportation Safety Board (NTSB). For more information on this event, visit the NTSB Records Search website. NTSB# CEN21LA244