NEW!!! Ram-Air STC for Grumman AA-5 Traveler and AA-5A Cheetah Owners!
Approach Aviation received an STC on October 29th, 2004 for an Alternate Air system for all Grumman AA-5 Traveler and AA-5A Cheetahs.
This Alternate Air System is designed to provide an alternate source of induction air into the engine without the restriction of the standard induction air filter.
This system allows the pilot to bypass the induction air filter without the reduction in available engine power
caused by resorting to carburetor heat. A cable control in the cockpit opens/closes a valve into the airbox that supplies unfiltered air from the available air in front of the forward engine baffling.
In addition, the inlet location provides a source of "Ram-Air" which
has been tested to increase manifold pressure by approximately 1/2"+. This equates to approximately 4hp more power (see Lycoming power chart).
Click on the links below for more information!
Click here to see the STC Certificate
Newly installed System (valve cover clamp ont yet installed)
Control Valve Close-up
Cockpit Control
New Induction Air Inlet
New Induction Air Inlet
Optional Inlet Scoop
Inlet Location Testing
Lycoming Engine Power Chart
This new system, complete with all necessary hardware, is available to the first ten customers for the introductory price of $750.
Installation time is approximately 4-6 hours.