User Guide
Table Of Contents
- Our commitment to you
- About your Bose A20 Aviation Headset
- What’s included
- What’s in the carton
- The microphone assembly
- The battery compartment
- Connecting the headset to the aircraft
- Wearing and adjusting the headset
- Using the control module
- Primary and Secondary audio sources
- Instructions for continued airworthiness
- Cleaning the headset
- Replacing parts
- Troubleshooting
- Mounting the aircraft panel connector
- Locating the headset serial number
- Limited warranty service
- Contact information
Technical Information
English - 39
FAA Technical Standards Order
The Bose
®
A20
®
Aviation Headset that are approved to TSO and ETSO C139 are
appropriately marked. The product interface, cables, and microphones have been
designed to function in or withstand exposure to the following environmental
conditions:
Condition Category
Altitude and temperature A1
Salt fog S
AF conducted susceptibility B
Humidity B
Magnetic effect Z
Power input B
RF susceptibility T
Temperature and altitude A1
Vibration S, R, and U
Voltage spike A
Shock drop 12 times, 1 m onto concrete
Explosive atmosphere Passed
Environmental categories cited refer to RTCA/DO-160F and RTCA/DO-214
(March 2, 1993).
The conditions and tests required for TSO approval of this are minimum performance stan-
dards. It is the responsibility of those installing this article either on or within a specific type or
class of aircraft to determine that the aircraft installation conditions are within the TSO stan-
dards. TSO articles must have separate approval for installation in aircraft. The article may be
installed only if performed under 14 CFR part 43 or the applicable airworthiness requirements.
This device complies with FCC and Industry Canada RF radiation exposure limits for general
population. It must not be collocated or operating in conjunction with any other antenna or
transmitter.