Aircraft Component Inc's Unique "Ground Proximity Sensing" 2037 Gear Alert System

• Electronically "senses" the ground approaching when landing, independent of airspeed



• Provides instantly recognizable audio voice warnings piped directly in the pilots headset



• Provides separate specific audio voice messages for stall & gear warnings

ACI's 2037 Gear Alert System is a totally independent* electronic gear warning device that (independent of airspeed) senses the presence of the approaching ground when landing via a radar altimeter-like technology using a belly mounted transducer/antenna. Regardless of airspeed, if the system determines that the aircraft is close to the ground, and the wheels are still retracted, it provides an instantly recognizable audio voice warning directly in the pilots headset AND through its built in speaker alerting of the problem .The unit also connects to the existing aircraft stall warning system and anytime the OEM existing stall horn sounds, the pilot will hear a separate voice stall warning message in his headset as well.

*Note: This Gear Alert System is similar (in effect) to the P2 AAS system in that it is a "stand alone" system totally independent of your ship's pre-existing gear warning horn.

The Gear Alert System consists of 3 components, a ground sensing transducer ( approximately 3 inch by 4 ½ inch by 1inch ) that mounts on the belly of the aircraft, a small electronic unit that mounts anywhere in the aircraft, and a small switch that mounts in the instrument panel. Pushing the switch performs a self test of the system. If the electronics are working, the pilot will hear the voice message "TEST OK" in his headset. The ground sensing transducer is a microwave device much like a radar.

When the aircraft descends to about 150 ft above the ground, the transducer senses the presence of the ground. The electronics then look at the gear down light to determine if the wheels are up or down. If the system determines that the aircraft is close to the ground and the wheels are still retracted, the pilot will hear the voice message "CHECK LANDING GEAR" in his headset. The system can also be hooked to the existing throttle switch system. Anytime the throttle is retracted with the wheels up, the pilot will hear the warning message. Any time the existing stall horn sounds, the voice message "STALL, STALL" will be heard.

• MOA Price: $1,395 and Free Freight to MOA Members)
• Average M20 Install: 7-9+/- hrs

The Audio Gear Warning Econo Champ: ACI's (Companion) Voice Alert Repeater

An Add-on "Repeater" Audio Warning System Who's $595 Price Should Make Even The Most Miserly Retract Pilot Happy

While not a true independent gear/stall warning system, ACI's Voice Alert uses the pre-existing sensors already in place in your aircraft (which currently sound your existing gear horn) to trigger instantly recognizable voice warnings directly into your headset in companion with, and whenever your OEM stock stall or gear horn sounds. While it isn't a "stand alone" system and thus doesn't offer the measure of safety as either the P2 or ACI's 2037 Gear Alert System, we think this is an order of magnitude superior to the simple ineffective monotone horn that were placed in the cockpit where they would sound for everyone in the airplane to hear. Studies show that times have changed as today most pilots wear headsets which block out much of the sound from the cabin, making it more difficult to hear the warning horns mounted in the aircraft. In fact, we find Active Noise Reduction (ANR) headsets are designed specifically to block out the background cabin sounds including the warning horns which must be heard.

At $595, the economical Voice Alert's audio warning is piped directly into your headsets and over the cabin speaker whenever the existing stall horn sounds. So with it installed, the pilot will hear the instantly recognizable voice message "STALL, STALL" from the built in speaker, and directly in his headset and if the gear warning horn sounds, the pilot will hear the voice message "CHECK LANDING GEAR, CHECK LANDING GEAR" alerting of the problem. Thus there will be no more confusion over which horn is sounding as these voice messages are in addition to the original gear/stall warning horn sounds.

The Voice Alert consists of a small electronic unit about 2 1/2 inch by 3 1/2 inch in size that can be mounted almost anywhere in the cockpit. The installed weight of the unit is less than 1 lb. The unit is supplied as a complete kit consisting of the electronic unit, a pre-wired cable assembly, and all the connecters and mounting hardware. The only other item required is a 1 amp fuse or circuit breaker. Installation is easy, and can be preformed by an A&P mechanic of an avionics shop in a day or less.

User Note: Due to the fact the simpler/cheaper Voice Alert DOES depend on your pre-existing aircraft sensors and micro switches and is in essence just an extra or "repeater" audio warning system, it is NOT generally to be considered as foolproof as either of the totally independent stand alone systems such as the P2 or ACI's 2037 Gear Alert System.
However to be blunt, if you don't spring for one of the other units, at $595 there is absolutely no excuse not to have this audio warning technology in your retract aircraft today...

• MOA Price: $595 Plus Freight
• Average M20 Install: 5-7+/- hrs

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