Telex Airman 8, Maintenance & Overhaul Manual

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CHAPTER 3
Maintenance
IMPORTANT: The Airman 8 headset was designed, tested, and approved to FAA TSO C139a. The TSO
requires the headset meet the minimum performance specifications as defined in RTCA DO-
214a. This document and specifications listed here reference the test procedures and
equipment used as defined in these standards. Refer to the standard for details on how to
perform individual tests.
3.1 Troubleshoot and Maintenance
The Airman 8 headset is designed so that ANR performance and boom microphone sensitivity can be adjusted as
required to meet specification requirements. These are only adjustments that can be made to the headset in order to
alter performance. All other maintenance requires replacement of parts, fixing open wires, or removing shorted wires.
See specific instructions later in this section for ANR or boom microphone adjustment.
3.1.1 Recommended Maintenance Schedule
NOTE: Ear cushions, headband pads, and microphone wind screens are considered wear items. For
proper headset performance, these items need to be inspected and replaced at regular intervals.
See the maintenance schedule below for more information. Headset performance diminishes if
items are not replaced when deterioration or damage is apparent.
Check Boom Mic Placement X
Check Ear Cup Placement X
Check Headband Fit X
Inspect & Clean Connectors X
Clean Ear Cushions X
Clean Headband Pad X
Check Connection Cable X
Inspect & Replace Windscreen X
Inspect & Replace Ear Cushions X
Inspect & Replace Headband Pad X
Task
Per
Use
Monthly
6
Months