Beaver Amphibian Down in Auckland Harbour
Moderator
audible message indicating where the gear is positioned be of help, i.e. the standard phrase "4 blues landing on water, 4 greens landing on land",
No matter what the warning system, or pilot discipline, task saturation can overcome it if the pilot is not vigilant. Landing an amphibian on water is nearly always different than landing at an airport. Nearly always it's uncontrolled, so there is not a controller to assist you (and maybe remind gear, if they know the plane), so you're more attending to other traffic. If it's a busy body of water, "runway" incursions are very likely, and, you're probably customizing your circuit to be non standard to avoid certain features on the ground. If you're landing "away", yes, you probably have the place to yourself, but now for sure, it's not an airport, and you must be aware of everything to do with aerodrome environment - landing area, winds, obstacles, hazards in the water, and where you're going ashore. All of that can demand a lot of pilot attention, and it's easy to forget things. I was training a 7000+ hour airline pilot, and during our umpteenth water landing, he was set up to forget to check. He was surprised when I suddenly called for an overshoot from a perfectly set up landing. I did not explain why the overshoot until we were climbing away - I think he remembered after that!
I teach that the pilot must get everything stabilized at some point before the final approach, and dedicate uninterrupted thinking to configuring the plane correctly for landing. That done, speak it out loud. Speaking it out loud while by yourself is odd, so memorable. Speaking it out loud with passengers, allows them to consider for themselves, and perhaps make their own assessment of the situation.
A simple hinged frangible plastic placard, brown on one side annotated LAND, blue on the other annotated WATER to be mounted by the gear selector such that with the blue WATER side uppermost it obstructs the gear travel to down or if gear is down already it cannot be put in that position.
Add item to top of landing checks; Surface Indicator...............Select Landing Surface.
Cost ten dollars!
Add item to top of landing checks; Surface Indicator...............Select Landing Surface.
Cost ten dollars!
Thread Starter
After recovery the airframe is said to be OK, but the engine and electrics have (not surprisingly) suffered.
Photo below of the aircraft in better times - nice colour scheme!

Photo below of the aircraft in better times - nice colour scheme!

Moderator
Surface Indicator...............Select Landing Surface.