review day 4 end of day

Ice and Rain Control

  • Prop Heat:
    • Responsible for de-icing propeller blades.
    • In colder conditions, engaging prop heat speeds up the heat application process to blades.
    • Faster cycles lead to better de-icing performance.
  • Time Cycles:
    • Slow cycle for heating prop fast: 4 minutes (240 seconds).
    • Fast cycle for heating prop faster than the slow cycle at below 10°F.
  • Switch Functions:
    • Engage prop heat: Activates fast cycle for blades.
    • Deactivate prop heat: Initiates slow cycle or can lead to shutdown.
  • Operational Notes:
    • Understand the purpose of each switch; the timing and conditions under which to select them are crucial.
    • Emphasize understanding over memorization; practical application is key.

Airframe Bleed

  • Isolation Valve:
    • Located in the overhead area, it turns off bleed air in specific conditions.
  • Troubleshooting:
    • After turning isolation valve off, wait for about 6 seconds to check for engine fault indications.
  • Ice Protection Levels:
    • Level 3: Full airframe protection.
    • Level 2: Partial protection components.
    • Level 1: Minimal protection equipment.

Enunciator Test Switch

  • Functionality:
    • Does not test three local alerts: IGT, fuel low, fuel flow.
  • Warning Lights:
    • Unlock light indicates disagreement between switch position and actual state.

Airframe and Prop Break

  • Prop Break Activation Requirements:
    • Green ready light must be on (indicates readiness for prop engagement).
    • Ground condition, gust lock engaged, condition lever in feather or fuel shutoff state, hydraulic blue pressure in desired zone.
    • Importance of green ready light: signifies safe operations leading to engagement of prop functions.

Engine and ITT

  • Maximum ITT:
    • In hotel mode: 950°C
    • General starting: 785°C

Air Conditioning and Bleed Air

  • Pitot Tubes and AC Components:
    • Most are AC powered except for the standby pitot tube (which is DC).
  • Cockpit Isolation Valve:
    • Normally conditions the cockpit using pack 1, with pack 2 for cabin compression.
    • If smoke is detected, isolation valve affects airflow and conditions in the cockpit.
  • Ground Cooling Fans:
    • Function: cools bleed air and runs air through heat exchangers on the ground.
    • Shuts off above 105 knots in flight.

Pack Operations and Malfunctions

  • Pack Operating Principles:
    • Packs rely on bleed air going through a series of compressors and heat exchangers to provide conditioned air.
    • Excessive heat or malfunction can lead to pack shutoff and prioritization of cooling.
  • Pack Valve Faults:
    • Indicative of overheating at the compressor discharge leading to pack shutdown.
  • Bleed Leak Detection:
    • Monitored via temperature loops and pressure indicators to prevent failures.

Descent and Dump Switch Modes

  • Descent Rate Control:
    • Used to maintain safe and effective descent rates to prevent exceeding differential pressure.
  • Dump Switch Purpose:
    • Opens outflow valves for rapid decompression in emergencies.
  • Ditching Procedures:
    • Engages both closure and opening motors, ensuring both safety during ditching.

Miscellaneous Notes

  • Gust Unlock & Power Lever Effects:
    • Engaged gust lock limits power lever movement, preventing accidental propeller engagement.
  • General Safety Practices:
    • Keep systems running to prevent failures like freezing; regular checks are crucial in maintaining aircraft safety.
  • Contextual Stories/Examples:
    • Anecdote about a flight experience demonstrating the humorous side of decompression during poor passenger experiences.
    • Importance of maintaining a professional atmosphere while managing technical operations.

Wrap-Up

  • Review knowledge of systems, emphasizing understanding of function over rote memorization.
  • Revisit failure modes and troubleshooting processes to reinforce safe operation principles.