And what's the rationale for allowing those who are fortunate enough to fly on private and executive jets to avoid T.S.A. checkpoints altogether?
In consultation with the NBAA, the FAA created the Block Aircraft Registration Request (BARR) program, which since 2000 has enabled private jets to avoid having their movements tracked - in real-time or after the fact - on commercial websites like FlightAware.com.com
The pilot of a US Airways jet managed to avoid disaster and save the lives of all 155 people on board his stricken plane when he ditched into the icy waters of the Hudson river moments after taking off from New York's LaGuardia airport.
The Zambezi runs on jet propulsion to avoid damaging the riverbed.
When some doves jet away to avoid a predator, for instance, their bodies start to whistle, says Kimberly Bostwick, an ornithologist at Cornell University, who was not involved in this study.
Essentially, the Jets have to avoid confusion on defense.
That is exactly what the Jets want to avoid.
In a time of economic difficulty, it was a not-so-subtle dig at Ms. Pelosi, who has access to a military jet large enough to avoid refueling for her flights home to San Francisco.
The next year, Cristina Fernández de Kirchner, a left-wing populist who was then President of Argentina, conducted official business aboard a commercial jet in order to avoid the embarrassment of having her own plane impounded.
Experimental data from these diverse sources are analysed, and the bounds of these regimes are expressed in terms of the critical minimum jet pipe diameter to avoid blow-off, normalised by the laminar flame thickness for the maximum burning velocity mixture, and the flow number.
