Why do they say contact when starting a plane?

Why do pilots or engineers say "contact' when starting a prop driven plane? In normal circumstances, bringing an aircraft all the way down to the runway is not overly difficult - line up with the runway, reduce power, reduce airspeed, and the plane gently touches down.

Similarly, it is asked, what does a plane say just before landing?

Aeroplanes tell you to decide - out loud - just seconds before landing. An approach to a runway typically features what's called a 'decision altitude' or a 'decision height'. On many aeroplanes, such as the Boeing 747, the voice says just one word, loudly and clearly: 'Decide!

Furthermore, how does an airplane engine start? The electric motor spins the main shaft until there is enough air blowing through the compressor and the combustion chamber to light the engine. Fuel starts flowing and an igniter similar to a spark plug ignites the fuel.

Similarly, it is asked, what is a cross bleed start?

A cross bleed start is used when the A.P.U. (auxilary power unit) is not working. One engine will be started from a Air Start Cart at the gate and then the A/C will be towed out to an open area where they can power up the running engine to about 80% power.

Why do pilots say heavy?

The word "heavy" means a larger aircraft type, with a Maximum Takeoff Weight of 160 tonnes or more. These aircraft create wake turbulence from their wings and require extra separation between following aircraft, and the use of "heavy" reminds other pilots of that fact.

Related Question Answers

Why do planes speed up before landing?

As the plane descends into ground effect, it may actually accelerate if the engines are producing enough thrust, since in ground effect the plane requires much less power to keep "flying". Power from the engines will translate into speed, if not height.

Why do planes turn before landing?

Successive airplanes should all come from the same direction to land. This removes any danger of collision when a plane fails a landing and goes around into what would otherwise be oncoming air traffic.

What do pilots say before taking off?

“Line up and wait” (taxi onto the runway and wait for a takeoff clearance) “Cleared to cross runway two seven” (taxi across runway 27) “Fly heading two three zero, Runway two seven Left, Cleared for takeoff” (After takeoff, fly a magnetic heading of 230º. Cleared to takeoff on Runway 27 Left)

What speed do planes land at?

Big commercial airplanes generally fly in the 550-580 MPH range, but their landing and taking-off speeds are naturally going to be different. Most commercial planes take off at roughly 160 to 180 MPH, while landings take place at approximately 150 to 165 MPH.

What do pilots say when crashing?

THE phrase "Easy Victor" is one that you never want to hear your pilot say on a flight - because it means the plane is going to crash. It's often used by pilots to warn crew to evacuate the plane without alarming passengers according to a flight attendant.

Are pilots allowed to have tattoos?

Members of the cabin crew aren't the only ones required to conceal their tattoos. According to the ATP (Airline Transport License) Flight School, the largest private flight academy in the country, virtually none of the major commercial airlines allow their pilots to have any tattoos visible while in uniform.

How do pilots know where to land their plane?

When clouds surround an airport, pilots have been able to find the path to the runway for decades by using an Instrument Landing System, or ILS. Ground-based transmitters project one radio beam straight down the middle of the runway, and another angled up from the runway threshold at a gentle three degrees.

What does minimum mean when landing a plane?

"Minimums" means you've arrived at that altitude. Pilots use those phrases to alert the pilot flying when he us getting close to the ground. Approaching minimums is the decision making altitude or minimum altitude ( Generally 100 feet above the minimum altitude ).

Do planes turn their engines off?

Pilots have come out and said that while we're in the air eating our boxed dinner or packaged snack, they turn the engines off. It also means that if there is an emergency situation and the engines do fail, flight crews have time to solve the issue.

Why do pilots start the right engine first?

Conclusion. And there you have it: we start the right engine first because passengers board on the left because boats docked on the left because the steering oar was on the right because most people are right handed.

What is a cross bleed?

i. An air ducting system used in multiengine turbojet aircraft in which compressor-bled air from one engine can be directed to the other engine and can be used to operate an air starter.

How does an APU start?

Before the engines are turned, the APU is started by a battery or hydraulic accumulator. Once the APU is running, it serves its purpose in providing power (electric, pneumatic, or hydraulic, depending on the design) to start the aircraft's main engines.

Can an APU provide thrust?

The APU is a turbine engine that sits in the tail of the aircraft. It provides no thrust. Like any jet engine, it takes in air, compresses it, adds a fuel mixture and ignites it. Once started, the APU powers both an electrical generator and an air compressor, Plumb explained.

How does a turboprop engine start?

Turboprop engines are usually fixed turbine or free turbine. The propeller is connected to the engine directly in a fixed turbine, resulting in the propeller being turned as the engine starts. This provides extra drag that must be overcome during starting.

Do planes have keys?

Keys are necessary in small planes. They lock multiple compartments like the main access door, the baggage compartments, the fuel caps, etc. They are also used to start the plane. Private jets also have keys for the same reasons but they are mainly to lock the door and external compartments.

What is engine bleed air used for?

Bleed air can be used to heat the engine inlets to prevent ice from forming, detaching and being ingested into the engine. Similarly, this warm air can be used to prevent ice build-up on the leading edges of the wings. Bleed air is also sometimes used for starting one of the aircraft's engines.

How do a jet engine work?

All jet engines, which are also called gas turbines, work on the same principle. The engine sucks air in at the front with a fan. The burning gases expand and blast out through the nozzle, at the back of the engine. As the jets of gas shoot backward, the engine and the aircraft are thrust forward.

How long do airplane engines last?

Airline engines (for example the Rolls Royce Trent series) usually have TBOs of over 15000 hours. The record for maximum time for an engine on wing (i.e. use in aircraft before removal for overhaul) is well over 40,000 hours. The life of an engine is given by the manufacturer and are different for different engines.

Do jet engines need to warm up?

They require warming up the engines in stages which involves several increases in power corresponding to increases in temperatures until such time as take-off power can be accepted by the engine without turbine or shaft failure. The procedure usually takes 10 to 15 minutes an a cold day.

Do planes have a horn?

Yes, aircraft have horns! However, it is not used to frighten away birds or alert other aircraft during flight. A high-frequency pitch that sounds like a handbell, it is used by the crew only on ground, to get the attention from the mechanical staff. It is an instrument of communication, not alert as in a car.

How does an engine start?

Your starter motor has two gears on it. When the electrical current reaches the motor, they mesh together as the motor spins the engine. As fuel and spark are introduced into the cylinders this is ignited, thus, the engine starts.

What RPM do jet engines run at?

In order for tip speed to remain constant, if the diameter of a rotor is reduced by half, the rotational speed must double. For example, large jet engines operate around 10,000-25,000 rpm, while micro turbines spin as fast as 500,000 rpm.

Why do airplanes use gas turbines?

To move an airplane through the air, we have to use some kind of propulsion system to generate thrust. The most widely used form of propulsion system for modern aircraft is the gas turbine engine. The compressor, burner, and turbine are called the core of the engine, since all gas turbines have these components.

How many engines does a plane have?

A twin-engine aircraft can fly perfectly well on one engine. In fact, it can even continue the take-off and then safely land with just one engine. Losing an engine in flight is not usually a particularly serious problem and the pilots are given extensive training to deal with such a situation.

How do chevrons reduce noise?

To combat the sound of jet-blast from the rear of the engine, Boeing, General Electric, and NASA developed serrated edges called chevrons for the back of the nacelle and the engine exhaust nozzle. The chevrons reduce jet blast noise by controlling the way the air mixes after passing through and around the engine.

Why do pilots say Niner?

Aviators often speak “pilot English” to avoid miscommunications over radio transmission. “Tree” for instance, means three, “fife” is the number five and “niner” means nine, says Tom Zecha, a manager at AOPA. The variations stemmed from a desire to avoid confusion between similar-sounding numbers, he says.

How do pilots eject from Jets?

In most designs, the seat is propelled out of the aircraft by an explosive charge or rocket motor, carrying the pilot with it. Once clear of the aircraft, the ejection seat deploys a parachute. Ejection seats are common on certain types of military aircraft.

Why do pilots say rotate on takeoff?

Pilots say rotate because it is a verbal queue that an airplane has reached its predetermined rotation speed (frequently abbreviated to Vr). This is the speed at which control inputs can be applied to lift the nose off the runway and make the airplane fly away.

How much do airline pilots make on average?

The 2019 Bureau of Labor Statistics reported the median U.S. pilot salary at $174,870. (This means that half of all pilots earned less than this amount, and half earned more.) There are pilots working for major airlines making more than $300,000 per year.

How do pilots know when to descend?

Question: How do pilots know when to descend to land on the assigned runway at the correct speed? Answer: Pilots plan the descent based on the wind and air traffic flow. Working in partnership with air traffic control, the descent is executed allowing adequate distance to descend and line up with the proper runway.

Do all pilots speak English?

Answer: The international language of aviation is English. In most places, the pilots and air traffic controllers have demonstrated the ability to speak and understand English up to a level specified by the International Civil Aviation Organization (ICAO). Some of the accents can be very challenging.

Which seat does the pilot sit in?

Traditionally, the first officer sits on the right-hand side of a fixed-wing aircraft ("right seat") and the left-hand side of a helicopter (the reason for this difference is related to the fact that in many cases the pilot flying is unable to release the right hand from the cyclic control to operate the instruments,

Can a pilot fly any plane?

Every time an airline brings in a new airplane type in the fleet, more pilot training is required, including several multi-million dollar full-motion flight simulators. By earning the mark of a common type, pilots can fly each aircraft without much or any additional training.