PS Engineering 116X6 - Manual (Page 10)

PS Engineering, Inc.
IntelliPAX Expansion Unit
200-250-0005 Page A Rev. 14, Jan. 2012
Appendix A Instructions for FAA Form 337 and Airworthiness
5.1 Sample text for FAA Form 337
One method of airworthiness approval is through an FAA Form 337, Major Repair and Alteration (Airframe,
Powerplant, Propeller, or Appliance) In the case of the IntelliPAX part number 116( ), you may use the
following text as a guide.
Installed intercom expansion unit, PS Engineering IntelliPAX, part number 11616 in ( location ) at
station
. Installed per AC43.13-2B, Chapter 2, Installed per PS Engineering Installation
Operators Manual p/n 200-250-xxxx, revision X, dated ( ).
Interface to existing audio system in accordance with installation manual and in compliance with
practices listed in AC43.13-2B, Chapter 2. All wires are Mil-Spec 22759 or 27500. No connection to
the aircraft dimmer bus is required. No additional connection to aircraft power is made.
Aircraft equipment list, weight and balance amended. Compass compensation checked. A copy of the
operation instructions, contained in PS Engineering document 200-250-( ), revision ( ), Dated ( ), is
placed in the aircraft records. All work accomplished listed on Work Order
.
5.2 Instructions for Continued Airworthiness:
Section Item Information
1 Introduction Installation of passenger intercommunications system.
2 Description Installation as described in manufacturer’s installation manual referenced on
FAA Form 337, including interface with other avionics audio as required.
3 Controls See installation and operator’s guide referenced on FAA Form 337.
4 Servicing None Required
5 Maintenance Instructions On Condition, no special instructions
6 Troubleshooting In the event of a unit problem, place the main unit into “OFF,” the fail-safe
mode. This allows normal pilot communications using COM 1. Follow
checkout instructions in the installation manual referenced on the FAA Form
337. For a specific unit fault, contact the manufacturer at (865) 988-9800 for
special instructions.
7 Removal and replacement
information Removal: Remove Volume knob (if equipped (11606, 11616), 2 ea. then #4-
40 black machine screws mounting the unit. Remove unit from behind panel.
Place metal faceplate in a safe area.
Installation: Align the volume knob shaft (if equipped, 11606, 11616) and the
mounting holes with the panel and front plate. Secure using 2 ea. #4-40 black
screws, provided.
8 Diagrams Not applicable
9 Special Inspection Requirements Not Applicable
10 Protective Treatments Not Applicable
11 Structural Data Not Applicable
12 Special Tools None
13 Not Applicable Not Applicable
14 Recommended Overhaul Periods None
15 Airworthiness Limitations Not Applicable
16 Revision To be determined by installer