Private Pilot Ground School Midterm Review: ATC, Airspace, and Aviation History

Comprehensive vocabulary flashcards covering Air Traffic Control facilities, aviation history milestones, airspace rules, clearance requirements, acronyms, and squawk codes.

ARTCC (Air Route Traffic Control Center)

An air traffic control facility that monitors and controls the en route airways between cities; commonly referred to as "Center" (managing air traffic, not air freight).

TRACON (Terminal Radar Approach Control)

An air traffic control facility providing radar services to managing aircraft arrivals and departures within the airspace surrounding busy terminal airports.

Air Traffic Control Tower (ATCT)

The airport control facility responsible for active runway operations and immediate airport airspace, serving as the first and last ATC voice contact of every flight.

Flight Progress Strip

A physical paper strip used by air traffic controllers for every IFR flight containing the aircraft's call sign, type, route, altitude, times, printed clearance, and any assigned departure clearance times.

Kitty Hawk Flight (December 17, 1903)

The first controlled, powered, heavier-than-air flight conducted by Orville and Wilbur Wright at Kitty Hawk, North Carolina; the initial flight covered $120\text{ ft}$ in about $12$ seconds, with the fourth flight that day reaching $852\text{ ft}$.

Air Mail Act of 1925 (Kelly Act)

Federal legislation enacted on February $2$, $1925$, that transferred airmail transport from government operation to private commercial airline contracts by competitive bidding.

Aeronautics Branch

The original civil aviation regulatory body established by the Air Commerce Act in $1926$, which later became the Bureau of Air Commerce ($1934$), the CAA ($1938$), and ultimately the FAA ($1958$).

Federal Aviation Agency (1958)

Federal regulatory agency created by the Federal Aviation Act of $1958$ following the $1956$ Grand Canyon midair collision; later integrated into the Department of Transportation (DOT) in $1967$.

Archie League

The first American air traffic controller, who began directing aircraft in St. Louis in $1929$ using a chair, wheelbarrow, and colored flags (red flag for hold, checkered flag for go).

Heinrich Hertz

Physicist who demonstrated in $1886$ that electromagnetic radio waves reflect off metallic objects, discovering the foundational physical principle underpinning radar technology.

Telemobiloskop

The first operational radio-echo anti-collision and ship-detection device, invented by Christian Hülsmeyer in $1904$.

ATIS (Automatic Terminal Information Service)

A continuous recorded broadcast loop providing non-control airport information—including weather, active runways, and NOTAMs—updated with an identifying phonetic alphabet code letter.

ATM (Air Traffic Management)

The comprehensive coordination and management framework responsible for running the entire aviation traffic system from departure gate to arrival gate.

ILS (Instrument Landing System)

A ground-based precision instrument approach system that provides lateral and vertical radio guidance down to a runway.

DP (Departure Procedure)

A published, preplanned IFR procedure designed to provide obstacle clearance and transition aircraft smoothly away from the airport terminal area to the en route airway system.

Flight Level (FL)

A standardized flight altitude expressed in hundreds of feet based on an altimeter setting of $29.92\text{ inHg}$, utilized in Class A airspace at and above $18{,}000\text{ ft MSL}$ (e.g., FL$180$ = $18{,}000\text{ ft}$ on standard pressure).

Class D Cloud Clearance Requirements

VFR weather minimums requiring $3\text{ statute miles}$ flight visibility, alongside cloud distances of $1{,}000\text{ ft}$ above, $500\text{ ft}$ below, and $2{,}000\text{ ft}$ horizontal (mnemonic: "$3$, $152$").

Class B Airspace

Controlled airspace configured as an upside-down wedding cake around major airports (e.g., O'Hare), requiring an explicit ATC clearance to enter, a Mode C transponder with ADS-B Out within a $30\text{ NM}$ veil, and providing ATC separation between all aircraft.

MOA (Military Operations Area)

Special use airspace designed to segregate non-hazardous military training activities from IFR traffic; VFR flight is legally permitted to enter without clearance, requiring pilots to remain vigilant.

Alert Area

A designated block of airspace depicted on aeronautical charts informing non-participating pilots of a high volume of pilot flight training or unusual aerial activity.

Restricted Area

Special use airspace established where hazardous activities like artillery fire exist; entry by civil aircraft is prohibited without permission from the controlling agency when the area is active ("hot").

Prohibited Area

Airspace established for national security or welfare reasons wherein no civil aircraft flight is allowed under any condition (e.g., P-$56$ over the White House).

TRSA (Terminal Radar Service Area)

Airspace surrounding select airports where radar service is available to provide vectoring and sequencing; not an ICAO lettered airspace class, and VFR pilot participation is voluntary.

ADIZ (Air Defense Identification Zone)

Airspace over land or water within which the identification, location, and control of civil aircraft are mandatory for national defense, where unannounced entry risks military interception.

See and Avoid (14 CFR 91.113)

The federal regulation mandating that all pilots in visual conditions maintain an outside visual scan to observe and avoid other aircraft, regardless of flight rules or air traffic control involvement.

Ground Delay Program

An air traffic flow initiative that holds departures at their gate rather than having them enter holding patterns in the air when destination demand exceeds airport capacity.

EDCT (Expect Departure Clearance Time)

The designated runway release time issued to an aircraft caught in a ground delay program indicating its allocated takeoff clearance slot.

Flight Following

A voluntary radar service provided by ATC to VFR flights on a workload-permitting basis that provides traffic advisories, terrain alerts, and flight assistance.

LAHSO (Land and Hold Short Operations)

An operational procedure allowing an aircraft to land and come to a complete stop prior to an intersecting runway or taxiway point to enhance airport traffic capacity; pilots may always reply "unable."

Squawk 7500

The standard aircraft transponder emergency squawk code indicating an ongoing hijack or unlawful aircraft seizure ("$75$, taken alive").

Squawk 7600

The transponder code selected to communicate a loss of two-way radio communications with air traffic control ("$76$, radio needs a fix").

Squawk 7700

The universal emergency transponder code signaling an urgent general emergency or in-flight distress condition ("$77$, going to heaven").