Aviation Cross-Country and Night Flight Operations

Comprehensive vocabulary flashcards covering flight planning, navigation, airspace classifications, visual flight rules, weather systems, and night flight operations.

Night (Regulatory Definition)

The time between the end of evening civil twilight and the beginning of morning civil twilight, which is shorter than the period between sunset and sunrise.

Dark Adaptation

The physiological adjustment to low-light conditions achieved by avoiding bright white light before flying and allowing $30\,\text{minutes}$ for full adaptation.

Aircraft Position Lights

Navigation lights required from sunset to sunrise, consisting of a red light on the left wingtip, a green light on the right wingtip, and a white light on the tail.

Civilian Airport Beacon

An airport light beacon that alternates white and green flashes to indicate a civilian land airport.

Pilot-Controlled Lighting

A runway lighting system activated by clicking the microphone on the proper frequency $7\,\text{times in }5\,\text{seconds}$ for highest intensity, or $5\,\text{times}$ to reduce intensity, remaining illuminated for $15\,\text{minutes}$.

VASI (Visual Approach Slope Indicator)

A two-bar glide slope lighting system providing a $3^\circ$ approach path, showing red over white when on glide path, all red when below, and all white when above.

PAPI (Precision Approach Path Indicator)

A visual approach indicator with two or four lights where more white lights indicate above glide path, more red indicate below, and all red indicates too low.

VFR Sectional Chart

An aeronautical chart designed for visual navigation named after a major city, most frequently used in private pilot training and knowledge tests.

VFR Terminal Area Chart (TAC)

A detailed chart providing close-up coverage for congested terminal airspace around busy airports, displaying VFR waypoints and checkpoints.

VFR Flyway Planning Chart

A chart printed on the back of select terminal area charts depicting flight paths designed to bypass major controlled traffic flows.

Chart Supplement

A civil aviation publication issued in nine volumes and updated every $56\,\text{days}$ containing comprehensive data for all public airports, seaplane bases, and heliports.

Domestic NOTAM (NOTAM-D)

A time-sensitive notice reporting operational changes such as NAVAID status, runway conditions, airspace restrictions, and personnel or equipment near runways.

Flight Data Center (FDC) NOTAM

A regulatory notice covering amendments to published aeronautical charts and instrument approach procedures, as well as temporary flight restrictions.

Maximum Elevation Figure (MEF)

A chart figure shown in quadrangles bounded by lines of latitude and longitude, indicating the elevation in thousands and hundreds of feet MSL calculated slightly above the highest known feature.

Coordinated Universal Time (UTC)

The standard primary time scale used in aviation navigation and communications, formerly known as Greenwich Mean Time (GMT) and called Zulu time by pilots.

Sterile Cockpit Rule

A safety practice prohibiting non-essential, non-flight-related conversation among crew members during critical phases of flight.

Dead Reckoning

A navigation technique of computing headings, time en route, and fuel required by plotting courses on a chart and applying estimated wind vectors.

Pilotage

A method of navigation that relies on identifying visual reference points and prominent landmarks on the ground, such as roads, lakes, towns, and rivers.

True Course

The flight direction measured clockwise in degrees from true north using meridians of longitude on an aeronautical chart.

Drift Angle

The angular difference between the heading of an aircraft and its actual track over the ground caused by wind.

Magnetic Variation

The angular difference between true north and magnetic north at any given location, depicted on aeronautical charts by isogonic lines.

Agonic Line

A line along which there is zero magnetic variation between true north and magnetic north.

Compass Deviation

The magnetic deflection of an onboard compass caused by electromagnetic disturbances and metallic components within the airplane.

VOR Radial

A magnetic course line radiating outward directly FROM a Very High Frequency Omni-directional Range station.

Distance Measuring Equipment (DME)

A navigation unit that measures the round-trip signal transmission time between the aircraft and a ground station to compute real-time slant distance.

WAAS (Wide Area Augmentation System)

A satellite-based augmentation system that corrects GPS signal variations, increasing horizontal positioning accuracy to less than $3\,\text{meters}$.

Trend Vector

A predictive indicator on primary flight displays showing the projected heading, airspeed, or altitude of the aircraft $6\,\text{seconds}$ into the future.

Fixed Base Operator (FBO)

An airport-based commercial service provider offering fueling, parking, maintenance, and passenger amenities to general aviation flights.

Air Mass

A large body of air having relatively uniform properties of temperature and moisture throughout, acquired over a uniform source region.

Front

A boundary transition zone between two contrasting air masses characterized by rapid variations in temperature, humidity, pressure, and wind.

Occluded Front

A composite front that develops when a fast-moving cold front overtakes a warm front, representing the late or dying stage of a storm system.

PIREP (Pilot Weather Report)

A real-time inflight observation of weather phenomena, clouds, turbulence, or icing transmitted directly from an aircraft flight deck.

Urgent PIREP (UUA)

A high-priority pilot weather report issued specifically for severe or extreme hazards like tornadoes, severe icing, low-level wind shear, or volcanic ash.

Flight Following

A voluntary radar service provided by air traffic control to VFR aircraft on a workload-permitting basis to supply traffic advisories and assistance.

Class A Airspace

Controlled airspace extending from $18,000\,\text{feet MSL}$ up to and including Flight Level $600$ ($60,000\,\text{feet}$), requiring IFR flight operations and an altimeter setting of $29.92\,\text{inHg}$.

Class B Airspace

Controlled airspace shaped like an upside-down wedding cake surrounding the nation's busiest commercial airports, requiring explicit ATC clearance to enter.

Class C Airspace

Controlled airspace surrounding moderate-traffic airports with an operating control tower, requiring two-way radio communication prior to entry and an altitude-reporting transponder with ADS-B Out.

Special VFR Clearance

An ATC clearance granted in Class E surface airspace allowing visual flight with visibility down to $1\,\text{statute mile}$ and clear of clouds, requiring an instrument rating at night.

Military Operation Area (MOA)

Special use airspace established to separate non-hazardous military training activities involving high-speed flight and abrupt maneuvers from IFR traffic.

Code 9900 (Winds Aloft)

A code used in text winds aloft forecast tables indicating winds that are light and variable at less than $5\,\text{knots}$.