TRACE ENGINE INDICATIONS AND SENSOR FAULTS
WWAOG Technical Academy
ATA 77 • Caravan 208/208B & Grand Caravan EX

TM-044 | Caravan Engine Indications & Sensor Fault Isolation

Connected sensor-to-display paths

Pressure and reference paths, speed and temperature sensing, conversion and display

Required diagnostic records

Compare identified inputs, readings and equipment-specific criteria

Evidence before replacement

Distinguish engine conditions, sensing faults and downstream indication faults
Understand how Caravan torque, propeller speed, gas-generator speed and ITT reach the cockpit. This Rev A course connects a 38-page handbook with eight lesson checks, six prediction-and-Apply exercises and eight two-stage cases. Identify the installed engine and indication branch before interpreting a fault.

What's included?

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

Understand the connected system

Trace the physical source, signal delivery and indication separately across PT6A-114/-114A, PT6A-140, older electrical-torque and named GEA 71/71B arrangements. Interpret source-specific pressure, leak, speed, temperature and insulation evidence without treating an injected response or plausible display as complete engine or sensor proof. The six explorer views use stated qualitative assumptions. Supplied D2078 Revision 42 and individual task effectivity bound the study; current aircraft, engine and supplier instructions control physical work.

Practice defensible fault isolation

Complete six required fixed records with eighteen classifications and three calculations, then pass the 12-question independent review at 80% with all eight critical decisions correct in the same attempt. All eight lesson checks, six Apply exercises, eight two-stage cases and the fixed records are required before that review; the core lab records 24 requirements and retains distinct first, latest and passing records. Pass the separate 40-question final at 80%, at least 32 correct. The certificate requires the handbook, completed lab and passing final; it does not replace observed practical qualification or maintenance authorization.