1. How many hours of shop time can I anticipate for doing the installation?
It is difficult to give an exact number of hours, as each aircraft is unique. However, from the responses that we have gotten from Warranty Card registrations, you can plan on around 10 hours of shop time to complete the installation (which includes the pitot-static leak check).

2. What does the system use as a basis for its operation?
The system receives airspeed information from the aircraft pitot system and montiors the landing gear position and signals from the aircraft stall warning switch.

3. Does the system measure distance above the ground like a radio altimeter?
No. Our system monitors airspeed and is not susceptible to terrain irregularities, precipitation, etc.

4. Is this product STC'd?
Yes it is. The AAS is fully FAA/PMA approved and is STC'd in many retractable-gear singles and light twins.

5. Can I install an Audio Advisory System my pressurized aircraft?
Yes. Check out the AML for applicablilty.

6. What if the pilot forgets to turn the system on?
The AAS is not required to be turned "on" or "off" by the pilot as it is wired directly to a main electrical buss. The system is powered anytime normal electrical power is available to the aircraft.

7. I wear a noise-canceling headset. Sometimes it is difficult to hear my existing gear warning and/or stall warning horn. With your system, am I able to hear the audio annunciations?
Yes. In fact, you should hear them loud and clear. The reason being, the audio from the AAS is piped directly into the audio system of the aircraft. That means that the voice messages are heard directly into the headsets and/or over the aircraft speaker.

8. What if my plane is not listed on the AML?
You can request a field approval from your FISDO. We can provide you with an assistance letter.

9. Is the 6600 Audio Advisory System still available?
No. The 6600 has been replaced by the 6601 for some time now.

10. What are the main features of the 6601 Audio Advisory System?
The system has four main functions: (1) LANDING GEAR POSITION monitoring and advisory, (2) Vne OVERSPEED PROTECTION, (3) STALL WARNING REPEATER and (4) an airspeed-activated output for FLIGHT TIME RECORDING.

11. What exactly does the LANDING GEAR POSITION feature do?
The landing gear advisory provides the pilot with an aural and visual annunciation each and every time the aircraft approaches for landing. If all the landing gear are down and locked, the system says, "GEAR IS DOWN FOR LANDING" one time. If not, the voice says, "CHECK GEAR!...CHECK GEAR!...CHECK GEAR!" The audio is heard over the aircraft speaker and/or through headsets. In addition, an amber annunciator is installed near the airspeed indicator light illuminates. With an abnormal gear configuration, the annunciation repeats itself until the pilot cancels it by pressing the illuminated AAS annunciator light.

12. How is the landing gear advisory activation speed threshold determined and set into the system?
The actual value is set at 10-15 kts (or mph) above the final approach speed (Vref) that is published in your Pilots Operating Handbook. It can be adjusted upwards or downward in 5 kt. increments. The landing configuration airspeed threshold is set up during installation by the avionics technician and can be adjusted at a later time as well.

13. Why should I invest in another gear warning device when I already have one in my airplane?
The gear warning horn in your aircraft more than likely relies on a mechanical throttle position to activate. In many cases, such as during a high power approach, this may not give an adequate warning until it is too late. In addition to the audio voice, the AAS has an annunciator light for redundancy. You will still have the original warning horn, thus having the redundancy of two systems.

14. Are gear up landings really that big of a problem?
You better believe they are. These types of incidents can happen to anyone. According to the FAA Advisory Circular AC-20-34D, over 30% of all landing accidents still involve forgetting to lower the landing gear. The NTSB reports that there is an average of one gear up landing per day in the US alone! It only takes a small distraction and then you become a statistic. As the saying goes, "There are those who have, and those who will."

15. What exactly does the OVERSPEED feature do?
The aircraft's airspeed is continuously monitored and alerts the pilot the aircraft reaches overspeed (Vne). This overspeed threshold value is hardwired during installation for the specific make and model of aircraft. As the aircraft reaches the airspeed threshold, the message, "OVERSPEED!...OVERSPEED!...OVERSPEED!" repeats and is accompanied by the flashing amber annunciator. Slowing the aircraft is the only way to stop these advisories.

16. How does the Stall Warning Repeater work?
The AAS looks for a signal from your aircraft's existing stall warning horn. When the horn sounds, the AAS sends an audio tone that can be heard over the aircraft speaker and/or headset.

17. What about the FLIGHT TIME RECORDING feature?
Frequently overlooked, this feature is very beneficial to savvy aircraft owners. The system provides an airspeed-based activation for an optional hour (Hobbs) meter. The hour meter counts "flight time" as long as the speed of the aircraft remains above 45 kts (50 mph). One important benefit of the flight time function is to track "time and service" as defined by FAR Part 1.1: "Time in service, with respect to maintenance time records, means the time from the moment an aircraft leaves the surface of the earth until it touches it at the next point of landing". By not recording time spent taxiing, more hours can be flown between inspections and component overhauls. Savings from this feature alone will allow the system to pay for itself!

18. How many hours can be saved by tracking flight time vs. tach time?
It all depends on the air traffic environment you operate in. At some airports, your taxi out time is minimal, while at others it is significant. The actual savings can be anywhere from 10% and up. Unlike tach time, the AAS (with an optional hour meter) only logs flight time. Because time on the ground is not registered, time between overhauls are increased. Depending on the number of hours flown, the system is capable of paying for itself in a very short time.

19. What aircraft make and models can I install this system in?
Call us or check the current Approved Model List. We are continuously working to add more makes and models to this list. If you don't see your aircraft listed there, let us know your desire to have it added to the AML.

20. I have a warbird in which has only two landing gear that retract. Will the system work in my plane? Yes. Landing gear position is landing gear position, and our system can interpret just about any one of them, including those aircraft with only two retractable landing gear.