What is a flight level in aviation?
Flight level means a level of constant atmospheric pressure related to a reference datum of 29.92 inches of mercury. Each is stated in three digits that represent hundreds of feet. For example, flight level 250 represents a barometric altimeter indication of 25,000 feet; flight level 255, an indication of 25,500 feet.
What are the different flight levels?
Metric flight levels
- 600 m (2,000 ft)
- 1,200 m (3,900 ft)
- 1,800 m (5,900 ft)
- 2,400 m (7,900 ft)
- 3,000 m (9,800 ft)
- 3,600 m (11,800 ft)
- 4,200 m (13,800 ft)
- 4,800 m (15,700 ft)
What is the lowest flight level?
The minimum safe altitude of a route is 19,000 feet MSL and the altimeter setting is reported between 29.92 and 29.43 “Hg, the lowest usable flight level will be 195, which is the flight level equivalent of 19,500 feet MSL (minimum altitude (TBL ENR 1.7-1) plus 500 feet).
What are the 10 phases of flight?
Phases of Flight
- Pre-departure. This is the preparation time for flight.
- Clearance to Taxi.
- Take-off.
- Initial climb.
- Climb to cruise altitude.
- Cruise altitude.
- Descent.
- Approach.
How are flight levels determined?
In the flight levels, the altitude is set by reference to a standard barometric pressure of 29.92 so as to create a standard reference for all aircraft and avoid any variation. The plane’s altitude is largely determined by traffic en route and the only thing in aviation that’s free—the wind.
How do you read flight levels?
Flight levels are usually designated in writing as FLxxx, where xxx is a two- or three-digit number indicating the pressure altitude in units of 100 feet (30 m). In radio communications, FL290 would be pronounced as “flight level two nine(r) zero.”
What are the critical stages of flight?
‘Critical phases of flight’ in the case of helicopters means taxiing, hovering, take-off, final approach, missed approach, the landing and any other phases of flight as determined by the pilot-in-command or commander.”
What are the six classes of controlled airspace?
Controlled Airspace: Class A, B, C, D and E There are five different classes of controlled airspace: A, B, C, D, and E airspace. A pilot requires clearance from ATC prior to entering Class A and B airspace, and two-way ATC communications are required before flying into Class C or D airspace.
