When the prescribed minimum altitude for IFR operations is at or above 18,000 feet MSL and the atmospheric pressure is less than 29.92”, add the appropriate adjustment factor from TBL 4-5-3 to the flight level equivalent of the minimum altitude in feet to determine the adjusted minimum flight level.
What is minimum IFR altitude?
In a DMA, the minimum altitudes for IFR flight (explicitly defined in 14 CFR §91.177) must be 2,000 feet above the highest obstacle within a horizontal distance of 4 nautical miles from the course to be flown.
What are minimum levels for IFR flight?
Except when necessary for take-off or landing, or except when authorized by the CAA, an IFR flight shall be flown at a level that is at least 1000FT above the highest obstacle located within 8KM of the estimated position of the aircraft.
How do I choose an IFR altitude?
For IFR flight, the regulations simply state that you need to fly at the altitude assigned by the air traffic controller, but if you’re flying IFR in uncontrolled airspace, you need to stay at even thousands for westerly headings and odd thousands when flying in easterly directions.
What is minimum instrument altitude?
minimum IFR altitude (MIA) The lowest IFR (instrument flight rules) altitude established for use in a specific airspace. … The minimum IFR altitude provides obstacle clearance but may or may not be within controlled airspace. Minimum altitudes are published on aeronautical charts.
What is the lowest altitude a plane can fly?
The Federal Aviation Regulation (FAR) Part 91.119 indicates that, except when necessary for departure or landing, the minimum altitude over urban areas is 1,000 feet above ground level (AGL) and 500 feet AGL over rural areas.
Can you fly below mea?
You still might be cleared below that MEA if ATC has lower minimum IFR altitudes or minimum vectoring altitudes available in that area, but those altitudes are not typically published on charts that pilots use. * You would just ask for a lower altitude, and the controller could clear you to the appropriate MVA or MIA.
Why is there no RVSM above FL410?
Historically, standard vertical separation was 1,000 feet from the surface to FL290, 2,000 feet from FL290 to FL410 and 4,000 feet above this. This was because the accuracy of the pressure altimeter used in aircraft to determine level decreases with height.
What are the IFR cruising altitudes?
Each person operating an aircraft under IFR in level cruising flight in controlled airspace shall maintain the altitude or flight level assigned that aircraft by ATC. … (ii) On a magnetic course of 180 degrees through 359 degrees, any even thousand foot MSL altitude (such as 2,000, 4,000, or 6,000).
What altitudes are RVSM?
Reduced vertical separation minima (RVSM) is the reduction, from 2,000 feet to 1,000 feet, of the standard vertical separation required between aircraft flying between flight level 290 (29,000 ft) and flight level 410 (41,000 ft).
How much horsepower does a Cessna 172 have?
The Cessna 172S was introduced in 1998 and is powered by a Lycoming IO-360-L2A, producing 180 horsepower (134 kW).
What is a good cruising altitude for a Cessna 172?
I’m comfortable cruising as high as 10,500 in a 172 if density altitude allows it. Typically for very long cross countries I cruise around 7,500 or 6,500 (assuming no mountains in the way), shorter cross countries are usually 3,500, 4,500 or 5,500 depending on how far I’m flying.
What height do Cessnas fly at?
According to USA Today, the common cruising altitude for most commercial airplanes is between 33,000 and 42,000 feet, or between about six and nearly eight miles above sea level.
What is the minimum flight altitude for an IFR flight over mountainous area?
No person may operate an aircraft under IFR including over-the-top or at night under VFR at an altitude less than 1,000 feet above the highest obstacle within a horizontal distance of five miles from the center of the intended course, or, in designated mountainous areas, less than 2,000 feet above the highest obstacle …
What is minimum safe altitude MSA for IFR conditions?
The Minimum Sector Altitude (MSA) is the lowest altitude which may be used which will provide a minimum clearance of 300 m (1 000 ft) above all objects located in the area contained within a sector of a circle of 46km (25 NM) radius centered on a radio navigation aid.