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Minnesota Wing Aircrew Training: Tasks P-2016, P-2017, P-2018. Aircraft Familiarization Aircraft Controls Aircraft Instruments Weight and Balance. Aircraft Structure and Controls. Aircraft Familiarization. Why do I need to know this stuff anyway? Terminology Structure Control surfaces
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Minnesota Wing Aircrew Training: Tasks P-2016, P-2017, P-2018 • Aircraft Familiarization • Aircraft Controls • Aircraft Instruments • Weight and Balance
Aircraft Familiarization • Why do I need to know this stuff anyway? • Terminology • Structure • Control surfaces • Instrumentation • Limitations
The Airplane • CAP typically uses C172 and C182.
Center of Gravity Center of Gravity Elevators provide pitch control
Flight Instruments • Magnetic Compass • Primarily a backup • Doesn’t require any power • Installation problems • Bank angles and speed changes can cause a compass to show the wrong heading
Flight Instruments • Heading Indicator (Directional Gyro) • Gyro-driven heading indicator • Quick response to turns • Stable indications • Electrical or vacuum-driven • Will drift, requires periodic re-alignment
Flight Instruments • Altimeter • Usually set to show pressure altitude above Mean Sea Level (MSL) • Accurate altitude is dependent on the altimeter setting.
Flight Instruments • Turn Coordinator • Really two instruments • Miniature aircraft shows turn rate only - does not show bank angle • Inclinometer shows quality of turn - Coordinated, slip, skid
Flight Instruments • Attitude Indicator • Provides a horizon reference • Hash marks indicate bank angle
Flight Instruments • Airspeed • Knots or MPH • Colored markings • Shows aircraft performance
Flight Instruments • Vertical Speed • Climb or descent rate • Has a lag due to design • Use with altimeter
Engine Instruments • Tachometer • Markings — green arc • Indicates power
Other Engine Instruments • Gauges • Fuel (accurate at empty) • Oil Temperature and Pressure • Vacuum and Generator • Exhaust Gas Temperature • Instruments vary from aircraft to aircraft
Comm, VOR and DME radios DME • Navigation/Communication Radio • Primary and Standby Frequencies Comm1 Nav 1 Communications Navigation Comm2 Nav2
Comm Antennas • Normally mounted on top • One for each radio
Nav Antennas • “Cat whisker” style • One for each nav
Navigation Instruments VOR ADF • VHF Omnidirectional Range (VOR-DME, VORTAC) • Indicates direction to/from ground transmitter relative to magnetic North • Automatic Direction Finder (NDB) • Direction toward ground transmitter relative to airplane nose
Other Antennas Loop (directional) ADF • Marker • Beacon
UHF Antenna Blade type (may be spike) Transponder & DME [If mounted up front, may interfere with DF]
Global Positioning System • Satellite based navigation • Apollo GX55 • Can provide search pattern course guidance and lat and long of target
GPS Antenna • Line of sight, so mounted at the very top • Comm antennas can interfere with the weak signals, so they are tested for interference GPS
Direction Finding Receiver • Used for electronic ELT searches
Static “wicks” • Mitigate buildup of static electricity (interferes with comm) • Wings, elevators, vertical stabilizer • Take care when walking around
Weight and Balance • The wings generate a limited amount of lift • Maximum weight for an aircraft is set by the manufacturer • Pitch stability is affected by the location of the center of gravity • The pilot computes weight and balance and controls it by loading the aircraft correctly • -If incorrectly loaded: • the pilot may not be able to raise the nose during take off or • the aircraft may be unstable and difficult or impossible to control in the air
Weight and Balance • Excessive weight adversely impacts performance: • Longer take off and landing distance • Reduced climb performance • Reduced ability to withstand turbulence and wind shear forces • Out of Forward C.G. limits can cause: • Reduced up-elevator authority (ability to raise the nose) • Can eliminate the ability to flare for landing • Out of Rear C.G. limits can cause: • Reduced down-elevator authority (ability to lower the nose) • Can make stall recovery difficult or impossible
Mission Aircraft Operations • A CAPF84 or CAPF104 must be completed • Altimeter settings will be from a source within 50 NM or the closest source available and updated hourly. • Airspeed will be no lower than 1.3 times aircraft stall at zero flaps and 30 degrees of bank.
Mission Aircraft Operations • Search altitudes are limited to no lower than 500 feet above the surface (except for counter drug vessel identification). • Search aircraft on missions over water must plan to be over a suitable airfield with at least 90 minutes of fuel on board at normal cruise speed.