AA21-408 Cabin PA System
Installation and Operation Manual Supplement
This supplement contains installation and operation information that is unique to the AA21-408 Cabin PA
System. Installation and operation information common to the AA21-400
base unit can be found in the
Installation section of the
SM34
Installation and Service Manual.
1.
Description
The AA21-408
is identical to the AA21-400
with the following exceptions:
a)
The speaker output is replaced with a CABIN PA MIC output.
b)
An INT/EXT discrete function is added.
c)
The standard white backlighting is changed to NVIS Green 'B' backlighting.
d)
The Power On LED indicator is not installed.
e)
The Volume knob is replaced by a grey edge lighted knob.
f)
The bat cover on the POWER switch is white instead of green.
2.
Installation
For general Installation information and drawings, see Service Manual
SM34
Section 2. Select the
appropriate revision of the drawing for the serial number of the unit. The drawings specific to this
derivative are listed below and can be found at the end of this supplement.
2.1
Installation Drawings
DOCUMENT REV.
DESCRIPTION
TYPE
AA21-408
AA21\408\403-0
1.00
Cabin PA System
Interconnect
AA21\408\405-0
1.00
Cabin PA System
Connector Map
AA21\408\922-0
1.00
Cabin PA System
Mechanical Installation
3.
Operation
For general operation information, see Service Manual
SM34
Section 3.
Supplement ends
SM Supplement Rev: 1.01
Page 1
ENG-FORM: 810-0109.DOT
CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD.
23-31-90
The document reference is online, please check the correspondence between the online documentation and the printed version.