What is clearance limit in aviation?
Formally, a clearance limit is the fix, point, or location to which an aircraft is cleared when issued an air traffic clearance. The clearance issued prior to departure normally authorizes flight to the airport of intended landing. A clearance limit is always preceded by the words, “Cleared to…” as above.
What is descend via provide clearance for?
Only a “Descend Via” clearance gives you the vertical authorization. The other two examples are a “lateral” clearance. Note: Compliance with published speed restrictions are required, unless canceled or modified by ATC.
What’s the minimum separation you must have with another aircraft below 10000 FT MSL?
3 miles
In IFR it’s 1000 ft vertically and 3 miles below 10,000 ft and 5 miles above 10,000 ft. This applies to non-commercial flights as well, such as part 91 flights, this has nothing to do with the flight being “commercial”. And, a commercial flight can also be in VFR, not every commercial flight is IFR.
When can you descend below mea?
Between them, the Minimum En Route Altitude (MEA) is 4,000 feet and the Minimum Obstruction Clearance Altitude (MOCA) is 2,100 feet. You cannot descend to these altitudes on a descend via clearance.
When can I request ATC clearance?
An ATC clearance must be obtained prior to operating within a Class B, Class C, Class D, or Class E surface area when the weather is less than that required for VFR flight.
What report should the pilot make at a clearance limit?
Pilots should report to ATC the time and altitude/flight level at which the aircraft reaches the clearance limit and report leaving the clearance limit.
What does climb via clearance mean?
Only a “Climb Via” clearance gives you the vertical authorization to climb and comply with the published altitude restrictions.
Does ATC tell you when to descend?
According to the FAA, when ATC issues a clearance to descend at pilot’s discretion (PD), pilots may begin the descent whenever they choose, and at any rate of their choosing. Pilots are also authorized to level off, temporarily, at any intermediate altitude during the descent.
What is the minimum ceiling for VFR?
IFR means a ceiling less than 1,000 feet AGL and/or visibility less than three miles. Low IFR (LIFR) is a sub-category of IFR. VFR means a ceiling greater than 3,000 feet AGL and visibility greater than five miles.
Can you fly IFR below mea?
IFR GPS aircraft can be cleared below the MEA down to the MOCA if there is one. Absent a MOCA, ATC can assign altitudes at or above the MVA or MIA along the route of flight and must issue lost communication instructions.
Can you descend below MDA?
Here’s hoping that the weather is on your side. If the reported visibility at the airport is below published minimums, you may not be able to descend below the decision altitude (DA), decision height (DH), or minimum descent altitude (MDA) for the approach you’re attempting.
How do you call for clearance?
there’s the National Clearance delivery through AFSS – 888-766-8267. This number should be programmed in every instrument pilot’s cell phone.
How do I request a clearance delivery?
Clearance Delivery For VFR departures, the request is similar to that for taxi clearance. You tell the controller who you are (your aircraft’s N-number, where you are on the airport, and where you want to go, i.e. “west departure” or your destination airport.
How do I get a VFR-on-top clearance?
You can request it on the ground, usually from clearance or ground control at a towered airport. Simply ask for an IFR climb to VFR-on-top. The controller will need to know your type aircraft and direction of flight. The clearance will usually have a clearance limit of a nearby VOR or other navaid.
Do you need a clearance for VFR-on-top?
In short, a VFR on-top clearance is an IFR clearance that allows pilots to fly at VFR altitudes (i.e. to select a level in lieu of the assigned one). This can be helpful if flying slightly above, or in between layers, and it is preferable to stay out of the clouds.
What does climb unrestricted mean?
Typically referred to as an “unrestricted climb”, pilots will take off and accelerate to a high speed near the ground and then pull the aircraft vertically or nearly vertical to quickly climb to the aircraft’s cruising altitude.
How do pilots know when to start their descent?
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.
When should a pilot start descent?
From 10,000 feet, pilots will then begin truly descending towards the airport. They’ll try to keep it fairly slow and steady, dropping at a rate of around 300-500 fpm.
What is the minimum separation?
The minimum separation distance to prevent a sympathetic detonation is based on the assumption that a spalling rock with a certain impact velocity can cause the explosives or cased charges to initiate a detonation.