Understand how air, heat and control paths work together

TM-024 | Caravan Environmental Systems & Air Conditioning

Airflow paths

Fresh air, cabin return, defrost and distribution

Heating & cooling

Bleed-air mixing and R134a heat transfer

Diagnostic evidence

Control permissions and branch-specific temperature checks
Understand Caravan 208/208B ventilation, bleed-air heating, defrost and optional R134a cooling. Includes a 25-page handbook, interactive workbench, six prediction exercises, eight two-stage fault cases and a 40-question final.

What's included?

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

Understand the connected system

Trace engine-bleed heating, fresh-air and return-air ducts, firewall isolation, compressor permissions and the refrigerant circuit. Separate heat transfer from airflow, distinguish common faults from local delivery problems, and select the correct PT6A-114/-114A or PT6A-140 installation task.

Practise defensible fault isolation

Use six prediction-and-Apply exercises, a three-evaporator temperature bench, eight two-stage diagnostic cases and a twelve-decision independent review. Complete all lab requirements and pass the 40-question final at 80%. Study source: supplied Cessna D2078 Revision 42, 1 June 2024. Current aircraft-effective instructions govern physical work. Online completion is separate from observed practical qualification.