Appendix D- Instructions For Faa Form 337 And Continuing Airworthiness; Instructions For Faa Form 337, Audio Panels; Instructions For Continuing Airworthiness, Audio System - Honeywell KMA 28B System Installation And Operation Manual

Appendix D- Instructions for FAA Form 337 and continuing air-
worthiness
7.1

Instructions for FAA Form 337, Audio Panels

One method of airworthiness approval is through an FAA Form 337, Major Repair and Alteration (Airframe, Power-
plant, Propeller, or Appliance) In the case of the KMA 28B, you may use the following text as a guide.
Installed audio selector and 6-place intercom, Honeywell KMA 28B, part number (X) in ( location ) at sta-
tion . Installed per AC43.13-2B, Chapter 2. Installed per Honeywell Installation Operators Manual p/n
200-780-(XXXX), revision (), dated ( ).
These units are FAA-Approved under TSO C50c for audio amplifiers, and/or TSO C35d for Marker Beacon
Receivers, and meets appropriate environmental qualifications outlined in RTCA DO-160D as appropriate or
this aircraft.
Interface to existing aircraft radios 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. Connection to aircraft dimmer bus
is ____________________. Power is supplied to the unit through a 3A circuit breaker (type and part number),
and total electrical load does not exceed
Aircraft equipment list, weights and balance amended. Compass compensation checked. A copy of the opera-
tion instructions, contained in Honeywell document 200-780-( ), revision ( ), dated ( ), is placed in the aircraft
records. All work accomplished listed on Work Order
7.2

Instructions for Continuing Airworthiness, Audio System

Sample ICA Checklist for Honeywell Audio System:
Section Item
1 Introduction
2 Description
3 Controls
4 Servicing
5 Maintenance Instructions
6 Troubleshooting
7 Removal and replacement informa-
tion
8 Diagrams
9 Special Inspection Requirements
10 Protective Treatments
11 Structural Data
12 Special Tools
13 Not Applicable
14 Recommended Overhaul Periods
15 Airworthiness Limitations
16 Revision
D201106000060
Bendix/King
KMA 28B Audio Selector Panel and Intercom System
Installation and Operator's Manual
% of the electrical system capacity with the KMA 28B added.
Installation of audio control panel with integrated marker beacon receiver and
intercommunications system.
Installation as described in manufacturer's installation manual referenced on
FAA Form 337, including interface with other avionics audio as required.
See installation and operator's guide referenced on FAA Form 337.
None Required
On Condition, no special instructions
In the event of a unit problem, place the unit into "off," "fail-safe" and/or
"emergency" mode. This allows 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.
Removal: Using a 3/32" Allen-head wrench, carefully unscrew the locking
screw located in the center of the unit. While turning the wrench CCW, gently
pull on the EDGES of the bezel until the unit is free from the mounting tray.
Installation: Engage the locking screw at the back. Turn the locking screw CW,
while applying slight pressure to the edges of the bezel. Do not over tighten!
Not applicable
Not Applicable
Not Applicable
Not Applicable
None
Not Applicable
None
Not Applicable
To be determined by installer
Appendix D
.
Information
June 2011