FLIGHT LEVEL SEPARATION AND MAGNETIC TRACK

Here are two very useful videos about the semi-circular rule. The first one is in English, the second one in French:

Pour la seconde vidéo, on peut ajouter que si les niveaux de vol 55, 75 et 85 (pour les routes magnétiques vers l’est) sont valables en VFR (régime de vol à vue), on devra emrunter en vol IFR (vol aux instruments) les niveaux de vol 50, 70, 80 et 90 par exemple. C’est à dire qu’en IFR on n’utilise pas les niveaux de vol se terminant par 5 mais par 0 et cela est valable pour les routes magnétiques allant vers l’ouest (FL 80, FL 90, etc). La règle semi-circulaire est utile aussi pour le module NRS (Navigation, Réglementation et Sécurité des vols) au BIA-CAEA. D’autres informations très intéressantes sont disponibles sur ces chaines Youtube:

ERA FLUG

CHEZ GLIGLI

ICAO Air Traffic Radiotelephony – Transmitting Numbers

Here is an audio/video file with transcript about how the numbers must be pronounced according to the ICAO (International Civilian Aviation Organization) standard. This is how aircrew members, and air traffic controllers should transmit the numbers.

CAUTION – There is not any exception for FL 100, and FL 200 according to the ICAO DOC 9432 Radiotelephony Manual, page 19, chapter 2.4.2, as it is pronounced « FLIGHT LEVEL ONE-ZERO-ZERO », and « FLIGHT LEVEL TWO-ZERO-ZERO ».
However, « Flight level one hundred » follows the French DGAC and the British CAA patterns.

Click on this video:

Argentine, Uruguayan Flights, and more Cancelled due to Volcanic Ash

An ash blanket has covered Buenos Aires today June 9, 2011.

The Puyehue – a Chilean volcano – has been erupting since June 4, and as a result, all the aircraft have been grounded, as well as all the flights have been cancelled at the main Buenos Aires airports – Ezeiza International Airport (also Ministro Pistarini International Airport); Jorge Newbery Airport; and Ástor Piazzolla International Airport. Flights have been cancelled in Uruguay at Carrasco International Airport.

Traffic troubles had begun in Argentina on Tuesday, then the flight resumed on Wednesday. A huge ash cloud is still hovering over the Argentine capital at FL 290 (9,000 m). The cleaning operation are going on.

Watch the video hereafter:

U-2 – Strategic reconnaissance a/c

The Dragon Lady is said to be difficult to fly, but remaining for more than 12 hours in its cockpit must have been an actual ordeal…