TRACE THE SOURCE. EXPLAIN THE FAULT. VERIFY THE COMPLETE RESULT.
WWAOG Technical Academy
ATA 73 • Caravan PT6A-114 / PT6A-114A • Engine fuel systems

TM-048 | Caravan PT6A-114/-114A Engine Fuel Delivery, Flow Indication & Drain Diagnostics

Connect fuel-system functions

Follow the heater, pump, separate filters, fuel control, divider and simplex nozzle groups. Distinguish fuel delivery from electrical flow indication.

Interpret the actual inspection stage

Use the named pump-drive, flow/totalizer, transmitter-connection and drain evidence. Keep a screening observation separate from the subsequent inspection result.

Verify the affected system

Preserve the actual torque, inspection timing, physical leak finding and post-work operational proof. Trace the identified drain line to its collection branch.
Understand how the Caravan PT6A-114/-114A engine fuel-delivery functions, flow indication, totalizer and drain collection paths work together. Follow the heater, pump, filters, fuel control and divider roles; distinguish a delivery complaint from an indication fault; and use specific pump-drive, transmitter-connection and drain evidence to choose a defensible next step. Aircraft-side PT6A-114/-114A fuel-delivery, installed flow/totalizer, pump-drive, specified transmitter-connection and drain diagnostic study, based on supplied Cessna D2078 Revision 42, June 2024. Current aircraft-effective maintenance data govern actual work. Original fictional records support reasoning practice; online completion is separate from supervised practical competence and maintenance authorization.

What's included?

  • 8 focused lessons
  • Completion certificate
  • 32-question final
  • 8 two-stage diagnostic cases
  • 41-page illustrated handbook

Understand how the systems work together

Understand fuel-delivery, scheduling, distribution and indication as related functions. Follow the installed flow-indicator and totalizer troubleshooting branches, explain rate versus accumulated consumption, and distinguish fuel-manifold collection from the separate FCU lube-oil drain route.

Practice evidence-based fault isolation

Complete eight lessons, six prediction-and-Apply exercises, eight two-stage cases and six fixed records with 21 conditions and two entered fuel calculations. The 12-decision independent review requires at least 80% and all eight critical decisions correct in one attempt. Pass the separate 32-question final with at least 26 correct answers. Complete the handbook, mastered lab and final to claim the certificate. Supplier FCU bench calibration, practical qualification and aircraft release remain separate.