What you will study
Installed package and cowling air paths
Separate the free turbine and accessory gearbox, then locate four cowling assemblies, inlet/vane/hot-lip connections, cooling outlets and actual tagged QEC interfaces.
Mount joints, alignment and latch hardware
Keep each torque band with its named engine-pad, isolator-center or firewall joint. Compare measured gaps, listed shim sums, thread projection, cowl fit and line clearance. Distinguish indexed cams from threaded clevises.
Two different fuel-drain installations
Trace early liquid fuel from the collector through an electric pump/filter toward the nacelle tank. Compare the later compressor-P3 charging and shutdown air-purge paths, then interpret distinct valve, drying and flow-divider tests.
Complete measured maintenance records
Use actual starting conditions, named observations, repeated results and required restoration. A running pump, in-band torque or clean-looking cowl does not establish every other affected function.
Learning outcomes
- Identify the actual engine, QEC inventory and airframe interfaces.
- Trace cowling inlet, cooling and separator connections by their named component.
- Compare each fastener, gap, shim and clearance with the actual task measurement.
- Distinguish early collector delivery from later P3 stored-air purge.
- Interpret operating state, repeat observations and complete affected restoration.
Aircraft and course applicability
Airframe powerplant installation and maintenance-record study for PT6A-41 Model 200 and PT6A-42 B200 using supplied Maintenance Manual 101-590010-19 Chapter 71, effective-page list November 1, 2024, with mixed task dates. Chapter 72 identifies the separate detailed engine-maintenance authority. Actual serial, mount/cowl/accessory configuration and early collector or later P3 purge branch select the task. Detailed engine-internal repair, full engine-control rigging, exhaust damage limits and unseen wiring pinouts are outside this course. Physical work uses complete current applicable instructions, required equipment and qualified personnel.
WWAOG provides independent training. Online completion records knowledge and simulation achievement; it does not replace observed practical qualification, employer authorization or applicable licensing. Use current aircraft-effective maintenance instructions for physical work.
