With the increasing use of headphones and in particular Electronic Noise Canceling headphones, it has become more difficult to hear warning horns in the cockpit. Because of this problem, the Intercom Gear Warning Device or IGWD was developed and introduced several years ago. After receiving input from customers, the new IGWD II is now available.
The IGWD II is a small electronic device that can be connected to either the landing gear throttle warning switch or the Flap UP Light or Switch and the Landing Gear Down Light or Switch. The pilots headphones are connected to the audio circuit in the IGWD II and should an unsafe condition occur, a loud pulsing tone is heard in the pilots headphones.
In the single input mode, Throttle gear safety switch, if the throttle is reduced and the gear is Up, the IGWD II will sound.
The two input mode with the flap UP light and the landing gear down light connected to the sensing inputs, provide added safety by ensuring that the landing gear is down before the flaps are lowered. Should the flap UP light go out before the landing gear Down light is on, the warning tone will be enabled.
In addition to the warning tone, a warning light output is available for a panel mounted light as well as a Test Switch input.
The IGWD II not only provides a second warning tone to the gear horn, it will still function should the gear horn fail, providing an added safety feature.
Not rated for certified aircraft
A simple gear warning horn may be misunderstood. A sound chip, saying Check gear! would be more helpful. -- Watch the gear up landing on the French altiport of Megeve. Both, the pilot and the mountain rate teacher have several thousands of flight hours and a huge experience, but it happens, that the gear was forgotten. On the video you can hear the warning signal of the plane, that indicates, that the gear was not pulled out https://www.youtube.com/watch?v=5McECUtM8fw
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We do not show any information that suggests this can be used for stall warning.
It is not FAA Approved but owner's can get 337 to have it installed in a certified aircraft.
According to the manufacturer this can go to your audio panel and intercom input.