ATL98LA093

NTSB accident investigation · Lane Progressive Aerodyne Searey · Windermere, FL · July 4, 1998

Accident · Serious injuriesLimited investigationFinal report
Date
July 4, 1998, 18:45 local (22:45 UTC)
Place
Windermere, FL
Injuries
1 serious
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N26RLLane Progressive Aerodyne Searey
Weather
Instrument (IMC) · Day
Status
Completed · report February 15, 2001
Report
Approved by Office Director
FAA report
19980704025079A
Case key
4007

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 inadequate design of the landing gear switch by the builder which allowed an inadvertent activation of the landing gear switch, leading to a gear extension during a water landing.

Sequence of events

NTSB’s coding before 2008: each occurrence and phase of flight, and the causes and factors under it. The codes are defined in NTSB’s coding manual.

Nose overLanding - roll
Terrain condition - water
Gear extension - inadvertent activationCause
Acft/equip,inadequate designOwner/builderCause
Landing gear,gear switch - activatedCause

Analysis

The pilot stated he completed the landing checklist which included checking for a gear up light and visually ensuring the gear was up. According to the pilot, after touchdown, the seaplane violently dove under the water. According to a witness, the seaplane touched down, skipped on the water, and then nose dived under water. The witness also stated that during the landing, the gear was up. During the rescue, he stated the gear was down. The FAA inspector stated he found the right main landing gear was in a position halfway between up and down, and rotated rearward. The left main gear was in a down and locked position. Examination of the landing gear extension/retraction system did not reveal any abnormalities. The pilot stated that the landing gear switch was designed so a closed guard, where the guard points down, indicated down and locked gear. In order to put the gear down, one could simply touch the guard because it is spring loaded to a down position. The pilot believed that the bouncing on landing could have caused the guard to close.

Factual narrative

On July 4, 1998, about 1845 eastern daylight time, a Robert Lane Progressive Aerodyne, Inc. SeaRey, experimental, amateur built seaplane, N26RL, nosed over during a water landing on Lake Down near Windermere, Florida. The seaplane was operated by the registered owner under the provisions of Title 14 CFR Part 91, and visual flight rules. Visual meteorological conditions prevailed. A flight plan was not filed for the personal, local flight. The airline transport pilot sustained serious injuries, and the airplane was substantially damaged. The flight originated from Lake Down at 1815.

The SeaRey is a single engine, high wing seaplane. It has retractable landing gear, in a conventional configuration. The fuselage of the seaplane is designed to act as a boat hull. The wings have two attached sponsons which add stability on the water.

The pilot stated he conducted a preflight inspection of the seaplane, taxied, and made an uneventful takeoff from Lake Down. He then contacted a friend at the destination airport, Gator Field, who stated the weather over Gator Field included thunder and lightning. The pilot stated he then decided to return to Lake Down. The pilot stated he completed the landing checklist which included checking for a gear up light and visually ensuring the gear was up. The touchdown was smooth, and the throttle was retarded. According to the pilot, the seaplane continued normal deceleration, then it suddenly and violently dove under the water, coming to rest inverted. The pilot was unable to free himself from the seaplane, but was eventually rescued by local boaters.

According to a witness, who assisted in rescuing the pilot, he was on the lake on a jet ski. He saw the seaplane was about to land, so he stopped to watch. The seaplane touched down, skipped on the water, touched down again, skipped, touched down a third time, and then nose dived under water. He stated he had seen other seaplanes land before, and everything seemed normal up until the seaplane nose dived. The witness also stated that during the landing, the gear was up. During the rescue, he stated the gear was down because he had leaned on it.

Another witness concurred that the gear was up at the time of the touchdown. He stated the seaplane touched down and skimmed the water like a boat before nose diving.

The FAA inspector stated he found the right main landing gear was in a position halfway between up and down, and rotated rearward. There was hull damage in the vicinity of the right main landing gear. The left main gear was in a down and locked position. The tailwheel was retracted. Examination of the landing gear extension/retraction system did not reveal any abnormalities. There were no air bubbles observed in the hydraulic system, nor was there evidence of a hydraulic fluid leak. Examination of the landing gear switch in the cockpit revealed the switch was guarded. When the gear was up, the guard was open. Slight movement of the guard resulted in the guard snapping shut and moving the toggle switch to a gear down position.

According to the pilot, all SeaRey cockpits are different because they are built to the owner's specifications. The pilot decided to have the landing gear switch guarded. It was designed so a closed guard, where the guard points down, indicated down and locked gear. An open guard indicated gear up and locked. So, in order to put the gear up, the guard must be opened, a switch must be toggled, and a handle must be locked. In order to put the gear down, one could simply touch the guard because it is spring loaded to a down position. When asked, the pilot stated that no part of his body, including his head, could have touched the guard upon landing. But, he believed that the bouncing on landing could have caused the guard to close. The pilot stated he plans to either change the guard to work the other way, guard closed, indicating the gear is up, or put in a detent switch.

Aircraft

Registration
N26RL
Reported as
Lane Progressive Aerodyne Searey
Category
Airplane, amateur-built
Serial number
1MK045
Airframe hours
60
Engine
Rotax 914, 115 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Registered owner
Robert Lane
Airworthiness certificate
Special, Experimental (Special)
Last inspection
Annual · June 16, 1998 · 7 hours before
Departed
NONE
Airport
NONE · Lake Down

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
62
Certificates
Flight engineer, Airline transport
Airplane ratings
Single-engine land, Multi-engine land, Single-engine sea, Multi-engine sea
Instrument ratings
Airplane
Medical
Class 2, Valid Medical--w/ waivers/lim
Seat
Left
Flight hours
25,000 total · 50 in this make and model · 1 in the last 24 hours

Weather

Conditions
Instrument (IMC) · Day
Wind
160° at 7 knots
Visibility
2 statute miles
Lowest ceiling
None
Temperature
88 °F, dew point 75 °F
Altimeter
29.00 inHg
Observed at
ORL, 15 nm away

FAA reports on this event · 1

The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.