Aeronautix has been awarded an FAA STC for its Aural Warning and Annunciation System (AWAS) for Beechcraft King Air 300 and 350 series aircraft.
The system is designed to integrate with the Collins Pro Line 21 avionics suite, improving situation awareness by giving audible voice warnings to pilots, and avoiding potential engine damage caused by over-temp or over-torque conditions.
The pilot workload during critical phases of flight, such as takeoff and missed approach, can distract the crew from serious engine limitation exceedances, resulting in damage costing hundreds of thousands of dollars in repairs.
AWAS will audibly inform pilots and crew that immediate action is required if the engine exceeds temperature or torque limitations in any maneuver. This callout will be coupled with a visual indication on the engine Multi-Function Display (MFD).
If the engine temperature exceeds 820° C, an aural voice will call out “MONITOR TEMPERATURE” to the pilot, repeating “TEMPERATURE” every five seconds until the temperature decreases or the warning is manually silenced by the crew.
If the torque exceeds 102%, an aural warning of “MONITOR TORQUE” will be called out, and “TORQUE” will be repeated every 15 seconds until the torque decreases or is manually silenced. These warnings are supplemented by amber and red visual annunciation on the AWAS control panel.
The non-invasive, on-site installation takes about 12 hours and consists of wire harness connections to the existing 429 data bus on the King Air. The AWAS is mounted in the center console on civilian aircraft and is authorized for other locations in military configurations. It also replaces the Cobham 630A-000 warning amplifier.
With PT6 engine overhauls averaging $300,000 or more, the AWAS will pay for itself with a single voice callout, says Aeronautix.