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Standpunkt: Die Politik in Salzburg muss jetzt Farbe bekennen

Standpunkt: Die Politik muss jetzt Farbe bekennen

Aviation Lingo: A Glossary

Ask the Captain: What determines a plane's altitude?

John Cox Special to USA TODAY What determines an airplane s altitude? is it relative to sea level or the land over which it is flying? For instance, when I am flying over Denver, Colorado, does the official altitude at which I am flying decrease by 5,280 feet? – Mark, Colorado Most airplanes fly above Mean Sea Level altitudes (MSL), the altimeter would read 5,280 feet in Denver. They are corrected for barometric pressure. When flying above 18,000 feet in the U.S., airplanes express altitude in terms of Flight Levels, which have a standard altimeter setting of 29.92 inches of Mercury. Pilots then describe the altitude by the first three digits. For example, 18,000 feet is FL180, 29,000 feet is FL290, 41,000 feet is FL410 and so on.

Transcripts for CNN New Day 20151102 12:08:00

Many of those alerts that you re talking about, alisyn, they are flight restrictions below a certain level. so if you take, for example, the notams relating to the sinai peninsula issued by the u.s., the uk, germany and others, they all related to flight levels below 25,000 or 26,000 feet. because that was where it was believed you could they didn t have sophisticated enough weaponry. the problem is, if those activities, those military activities such as eastern ukraine, they get surface-to-air missiles that can get to the upper altitudes. that relies on intelligence. it is a mess. they ve tried to deal with this but it is a mess. there s no unified system that s is satisfactory for alerting airlines. trouble be note to end on. richard quest, jim hall, thanks for all of your expertise. over to michaela.