Training Tip: When ATC goes to zero (2024)

Sponsored by Aircraft Spruce

March 23, 2020By Dan Namowitz

A shudder went through the air traffic system on March 20 when the New York Air Route Traffic Control Center shut down briefly after a staff member tested positive for the coronavirus.

Photo by Chris Rose.

In ATC parlance, the facility had gone to “ATC zero” status—an unplanned closing that the existing contingency planning can’t prevent.

The interruption at New York Center was one of several instances in which positive coronavirus tests impacted air traffic control in March as the virus spread. The control tower at McCarran International Airport in Las Vegas also went to ATC zero status, with Class B airspace service unavailable and the terminal radar facility taking over from the tower. Four days into the closure, hundreds of flights had been delayed or canceled, with Southwest Airlines alone dropping about 500 flights from its schedule, according to a news report.

Before the coronavirus pandemic and an earthquake in Salt Lake City joined the list this month, equipment failures and natural phenomena like severe weather or flooding were known triggers for ATC facilities going ATC zero. In September 2014 an arson fire shut down the Chicago ARTCC when a reportedly suicidal contract worker lit gasoline-soaked rags near computer equipment in the facility basem*nt. He pleaded guilty to charges in the incident and was sentenced to a 12-year prison term.

By the book

Notams are a key reference for use by a private pilot applicant when demonstrating understanding of cross-country flight route planning for the practical test.

ATC-zero events are infrequent (434 systemwide in 2019, according to the FAA). If a portion of a facility is affected by a shutdown, the facility is said to be on “ATC limited” status, as was Indianapolis Center on March 19 in another event triggered by a coronavirus test. Far more common than ATC-zero or ATC-limited events are “ATC Alert” events, which numbered 1,765 in 2019.

The sudden and widespread impact of an ATC-zero scenario underlines the need for general aviation pilots to make regular and repeated checks of notams for airport closures, routing restrictions, and airspace service-level changes. Pilots can check for air traffic delays via the FAA’s ATCSCC website and selecting various products like current advisories.

ATC zero is not a time for taking advantage of the situation and adding to congestion—for example by making touch-and-goes at a busy airport like Midway International Airport in Chicago, a complication the FAA quickly addressed by imposing a temporary flight restriction, noted Rune Duke, AOPA senior director of airspace, air traffic, and aviation security.

As with the coronavirus itself, taking the necessary precautions in flight planning protects not just yourself, but all your fellow users of the airspace system as well.

Dan Namowitz

Dan Namowitz has been writing for AOPA in a variety of capacities since 1991. He has been a flight instructor since 1990 and is a 35-year AOPA member.

Go to Dan Namowitz's Profile

Topics:ATC

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Training Tip: When ATC goes to zero (2024)

FAQs

What if there is no ATC? ›

Without civilian ATC, pilots would not be allowed to file and fly IFR flight plans, which would preclude flight through clouds, limited visibility, and operations above 18,000 feet. Though airline operations rely on controllers for every flight, there are times when airline pilots operate without direct ATC oversight.

Can ATC be zero? ›

ATC Zero is declared in response to an event when it is determined the controlling facility, or significant portion thereof, is unable to safely provide the published air traffic services, or provide traffic flow management in the case of the ATCSCC.

What is an ATC zero event? ›

ATC-Zero is an operational contingency level that's declared when a facility is unable to safely provide ATC services. This does not necessarily mean the building will be evacuated, unless it's a safety hazard for the controllers. Past that, within ATC-Zero, there are four general response levels.

What should you do if you Cannot understand ATC instructions? ›

An Air Traffic Controller is always prepared to repeat, provide clarification or alternative instructions when requested. The final decision to act on A-T-C's instruction rests with you. If you cannot safely comply with an A-T-C instruction, inform them by stating “UNABLE.”

How many people fail ATC training? ›

The report notes that just above 30 percent typically fail the academy.

What happens if you fail ATC training? ›

If successful in all stages of field qualification training, the developmental controllers become certified professional controllers (CPCs). Most often, developmental controllers who fail field qualification training are terminated from employment.

What is the top 1% in ATC? ›

The "top 1%" refers to a ranking based on income, specifically those not in the lower 99%. The controller is basically telling them to follow the rich people in their fancy private jet. JustSid found another video where the controller explains it as "someone richer than both you and me."

Can pilots ignore ATC? ›

(b) Except in an emergency, no person may operate an aircraft contrary to an ATC instruction in an area in which air traffic control is exercised.

What is the shutdown rule in ATC? ›

In perfect competition, the shutdown point refers to the situation when a firm's average total cost (ATC) exceeds the market price of its product. D. The shutdown point is when a firm chooses to halt operations because the market price is greater than the marginal cost (MC).

When must ATC retire? ›

Air traffic controllers must remain focused and react quickly to conditions that change frequently. Being responsible for the safety of aircraft and their passengers may be stressful and exhausting. To prevent burnout, the FAA requires controllers to retire at age 56.

Do ATC get free flights? ›

Although air traffic controllers may not get free flights like flight attendants do, they still have attractive employee benefits. For example, their employers often give them permanent discounts which they can use to buy tickets and other products that the airport or a specific airline carries.

What does zero zero mean in aviation? ›

A zero/zero landing would literally mean landing the airplane while the ceiling was absolutely zero and the visibility was absolutely zero, too—a condition we hardly ever encounter. In reality, zero/zero means “hardly any” ceiling or visibility to work with.

How can I improve my ATC listening? ›

Listen to how pilots respond to ATC transmissions. Imitating others is often how we learn to use the phraseology correctly—and incorrectly. Looking up new words and phrases in the AIM makes understanding what you hear easier, and it tells you what communications are "correct" and "incorrect."

Why is ATC so hard to hear? ›

Why are ATC-Pilot communications so hard to hear, while we can clearly talk with people from around the world via apps and mobile phones? ATC uses amplitude modulation on UHF frequencies. This is why the available frequency range for the sound of voice is rather limited.

Can planes land without ATC? ›

Operations. At non-towered airports, instead of receiving instructions from an air traffic controller, aircraft pilots follow recommended operations and communications procedures for operating at an airport without a control tower.

Why is ATC necessary? ›

The primary purpose of the ATC system is to prevent a collision involving aircraft operating in the system.

Why is ATC so important? ›

To prevent collisions, ATC enforces traffic separation rules, which ensure each aircraft maintains a minimum amount of 'empty space' around it at all times. It is also common for ATC to provide services to all private, military, and commercial aircraft operating within its airspace; not just civilian aircraft.

What happens if you ignore ATC? ›

Consequences. Taking off without ATC clearance may lead to: Runway Incursion - The aircraft may have been cleared only to the runway holding point. Also, at relatively complex aerodromes, taking off may mean crossing other runways.

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