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as well as instrument-rated applicants who wish to exercise instrument privileges in multi-engine airplanes
For ease of installation
The SPA-4S will operate on an input power of 11 VDC through 32 VDC
David Clark h10-56
GCA-400ST audio-panels as well as instrument-rated applicantsGCA 400ST Stereo Intercom contains a 3 way control switch, PILOT ALL CREW, for enhanced cockpit communications. Separate volume controls for pilot and crew. Can be used with monaural or stereo headsets, or any combination of headsets. On Off volume switch Pilot isolate switch Music In Record Out jacks Adjustable squelch control Fail Safe capability Powered by two 9V batteries Auxiliary power cord adapter Measures 4" x 5" 1. 375" Three Year Warranty
