Section 902 Pilot’s Operating Handbook
PS Engineering PMA8000B(-T) EXTRA 500
902.3 Section 3 – Emergency Procedures
902.3.a Fail Safe Operation
In the
OFF/EMG position of the power switch, the pilot headset
is connected directly to Com 1 as well as all aural warnings
provided by the aircraft or its systems (refer to Section 1). This
allows communication capability regardless of unit condition.
Any time power is removed or turned
off, the audio selector will
revert to fail-safe mode.
902.4 Section 4 – Normal Procedures
Not affected.
902.5 Section 5 – Performance
Not affected.
902.6 Section 6 – Weight and Balance
Not affected.
902.7 Section 7 – Description
In this supplement only the basic functions are outlined. For
detailed description of the PMA8000B(-T) refer to the Pilot’s
Guide and Operation Manual 202-890-0402 and 202-890-0404
respectively.
1 Power Switch
Unit power is turned on and off by pushing the volume knob.
The power switch controls all audio selector panel functions,
intercom and marker beacon receiver. All pushbutton selections
will be remembered and return to the last state when turned on.
2 Communications Transmit (XMT) Selection
There are two pushbuttons associated with the transmitter
selection. The two lower buttons (
Com 1, Com 2) control which
transceiver is selected for transmit. The top row of pushbuttons
(
Com 1, Com 2) allows selection of the receiver audio. Active
selections are indicated by the green switch LEDs.
902-4 26. January 2011
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