Specifications
PS Engineering 
PMA8000B Audio Selector Panel and Intercom System 
Installation and Operator’s Manual 
200-890-0100  Page 2-1  Rev. 13, Dec. 2009 
  Section II - INSTALLATION 
2.1  GENERAL INFORMATION 
2.1.1  SCOPE 
This  section  provides  detailed  installation  and  interconnection  instructions  for  the  PS  Engineering 
PMA8000B Audio Selector Panel/Intercom/ with internal Marker Beacon.   
Please  read  this  manual  carefully  before  beginning  any  installation  to  prevent  damage  and  post -
installation problems. Installation of this equipment  requires special tools, test equipment (refer to section 
2.12.1) and knowledge as required by 14 CFR 65.81 (b). 
2.1.2  Certification Requirements 
NOTE 
The PMA8000B requires specialized knowledge and tools for an effective installation. An appropriately 
rated Certified Aircraft Repair Station must install this equipment in accordance with applicable regula-
tions. PS Engineering, Incorporated warranty is not valid unless the equipment is installed by an author-
ized PS Engineering, Incorporated dealer.  
Failure to follow any of the installation instructions, or installation by a non -certified individual or agency 
will void the warranty, and may result in an  unairworthy installation. 
2.2  Unpacking and Preliminary Inspection 
Use care when unpacking the equipment. Inspect the units and parts supplied for visible signs of shipping 
damage.  Examine  the  unit  for  loose  or  broken  buttons,  bent  knobs,  etc.    Verify  the correct  quantity  of 
components supplied with the list in Section 1.6 (B). If any claim is to be made, save the shipp ing mate-
rial  and contact the freight carrier. Do NOT return units damaged in shipping to PS Engineering. If the 
unit  or accessories show  any  sign of external shipping damage, contact PS Engineering to arrange for a 
replacement. Under no circumstances attempt to install a damaged unit in an aircraft. Equipment returned 
to PS  Engineering for  any  other  reason should be shipped in the original PS Engineering packaging, or 
other UPS approved packaging. 
2.3  Equipment Installation Procedures 
2.3.1  Cooling Requirements 
Forced air-cooling of the PMA8000B is not required. However, the units should be kept away from heat 
producing sources (i.e.  defrost or  heater ducts, dropping resistors, heat producing avionics) without ade-
quate cooling air provided. 
2.3.2  Mounting Requirements  
The PMA8000B must be rigidly mounted to the instrument panel of the aircraft structure, within view and 
reach  of the  pilot position(s).  Installation  must  comply  with  FAA Advisory Circular AC  43.13-2A. The 
unit may be mounted in any area where adequate clearance for the unit and associated wiring bundle exist. 
To prevent noise, avoid installing the unit close to high current devices or systems with high -voltage pulse 
type  outputs,  such  as  DME  or  transponders.  Avoid  running  the interconnecting  bundles near  any  high 
current wires. 
2.3.3  Audio Panel Mounting Rack Installation 
Remove the unit from the mounting tray by unscrewing the 3/32" hex-head screw that is in the center of 
the unit. Use caution to avoid hitting the photo-detector lens. Carefully slide the unit free of the tray. Set 
the unit aside in a safe location until needed.  Install the tray using six clip nuts (475 -630-0002), and six 










