Connect voice, audio routing and radio-frequency evidence

ATA 23 • King Air Fusion

TM-026B | King Air Fusion Communications & Audio Troubleshooting

Distributed architecture

Crew audio controls, amplifiers, radios and aircraft RF paths

Reception & transmission

Separate tuned-radio, audio, microphone and RF evidence

Diagnostic evidence

Compare command, communication and physical response
Factory-Fusion B300/B300C installations described in the supplied chapter, with ASPU versus RIU effectivity distinguished. Optional HF, satellite and data services are identification boundaries, not full maintenance qualifications. Includes a 26-page handbook, six prediction exercises, eight diagnostic cases and a 40-question final.

What's included?

  • 8 focused lessons
  • Completion certificate
  • 40-question final
  • 8 guided fault cases
  • 26-page handbook

Understand the connected system

Trace crew audio-control panels, audio amplifiers, microphone and keying paths, radio-frequency transmission and reception, ground interphone, warnings and recorder functions. Distinguish ASPU and RIU effectivity, and explain why local sidetone or a changed frequency does not prove two-way radio performance.

Practise defensible fault isolation

Practise six prediction-and-Apply exercises, eight two-stage cases, installed forward-power and matching comparisons, path-specific static-discharge evidence and twelve independent decisions. Complete all lab requirements and pass the 40-question final at 80%. Study source: Textron 434-590169-0009, supplied B300/B300C Fusion Chapter 23, pages dated 1 May 2018. Current aircraft-effective instructions govern physical work. Online completion is separate from observed practical qualification.