Beechcraft King Air 300/350 Pilot Training Manual – Vol. 2: Aircraft Systems

This FlightSafety International King Air 300/350 Pilot Training Manual, Volume 2: Aircraft Systems (copyright 2001), explains the Beechcraft turboprops' system architecture, controls, indications, and operational checks. It is for familiarization and training, not a replacement for the aircraft's approved flight or maintenance documentation.

Searchable Text, Bookmarks, and Diagram Detail

Text search and diagram navigation: Body text supports searching, while some diagram labels are image-based. Chapter bookmarks are available; the Aircraft General illustration bookmark returns to the cover. Small schematic labels require zooming, and some landing-gear circuit labels remain soft at higher magnification.

One printable English PDF contains 547 pages: four opening pages, 505 chapter pages, a 26-page pictorial walkaround, and a 12-page terminology appendix. All of these sections are included in the total.

Aircraft Systems, Cockpit Indications, and Functional Checks

The following selected topics show the main areas covered, rather than the complete contents. Additional material includes cabin-door operation and comparisons of FAR certification requirements.

• Electrical power: Generation, bus isolation, load shedding, load-management tables, and step-by-step instructions for the Ni-Cad Battery Condition Check.

• Fuel and engines: Motive-flow fuel transfer, crossfeed, PT6A-60A lubrication and fuel-control operation, engine limitations, and condition trend monitoring.

• Propellers: Hartzell governing, ground-fine and reverse operation, feathering, synchrophaser operation, and step-by-step procedures for the Autofeather System Test.

• Environmental and ice protection: Bleed-air flow control, heating, air conditioning, pressurization troubleshooting, and pneumatic surface and optional brake deice systems.

• Landing gear and flight controls: Hydraulic gear sequencing, alternate extension, brake-fluid servicing, brake-wear inspection, steering, flap operation, and split-flap protection.

• Avionics: Collins Pro Line II equipment, EFIS-85B displays, receiver diagnostic codes, and step-by-step instructions for the VIR-32 Navigation Receiver Self Test.

• Warnings and oxygen: Master warning annunciators, lamp checks, engine fire detection and extinguishing, oxygen-mask deployment, and oxygen-duration calculations.

This volume suits pilots studying King Air systems, with explanations linking cockpit indications to the equipment and circuits behind them.

Electrical Distribution and Annunciator Logic

The Power Distribution Schematics show changing power paths during starting, external-power use, generator loss, and bus faults. Separate load-management tables for the 300 and 350 help readers connect a lost supply with the equipment affected.

The text distinguishes the 300's hot battery bus from the 350's battery and dual-fed buses. Annunciator tables explain warning causes, and the same section includes lamp checks and replacement.

The BUS SENSE discussion also identifies a component-damage risk: holding the switch in TEST can damage or destroy the current-sensor modules.

Fuel Transfer, Engine Monitoring, and Propeller Control

The Fuel System Schematic Diagram traces transfer and feed paths through the auxiliary tanks, jet pumps, and motive-flow valves. Engine coverage explains free-turbine construction and fuel-control principles, with an in-flight data log for recording engine trends.

Overtemperature and overtorque charts describe inspection consequences; they do not provide engine teardown or overhaul procedures. Autofeather uses torque-pressure switches, while the APC-65J discussion concerns rudder boost and its torque-transmitter inputs.

Cabin Pressure and Ice Protection

The Air-to-Air Heat Exchanger Diagram and Surface Deice System Diagram connect airflow routing with temperature control and deice operation. Pressurization troubleshooting distinguishes inflow, outflow, and cabin-leakage problems, helping readers understand why similar cabin indications can have different causes.

The propeller-deice section warns that operation with stationary propellers can burn or pit the slip rings. Before working on electrical, rotating, or pressurized systems, follow the aircraft's current approved procedures and safety precautions.

Gear Hydraulics and Avionics Test Limits

The Brake System Schematic supports the description of normal braking and the parking-brake circuit. Gear drawings follow hydraulic flow through extension and retraction; the separate hydraulics chapter directs readers to the landing-gear chapter.

Avionics coverage extends to EFIS reversion, APS-65 flight-director modes, and UNS-1K/L interfaces. Self-test descriptions show expected indications and selected fault codes; weather-radar stabilization alignment refers to the separate installation manual.

Selected Battery-Monitor and Bus-Protection Thresholds

For the King Air 300 battery-charge monitor, charging current above 7 amperes for six seconds or more triggers the BATTERY CHARGE annunciator. The Hall-effect bus-tie sensors have a separate activation threshold of 275 ±5 amperes in the monitored direction.

These examples describe indication and protection logic: the battery monitor reports charging current, while the bus-tie sensors interrupt the associated relay control circuit and latch the tie open.