This is a bird strike event, very occasionally Reporter contacted yesterday evening southern base of the China International Aviation and relevant person in charge, according to its understanding that, yesterday morning 10:11, CA4307 Chengdu - Shuangliu Airport in Chengdu, Guangzhou Flights normal take-off in about 20 minutes after takeoff, flight onboard radome was suddenly a bird strike, 'After the accident occurred, the flight captain calmly, in order to consider the life and property safety of passengers in contact with the Chengdu airport, follow the prescribed procedures the plane back to Chengdu.' In 10:59 yesterday morning, the flight successfully returned to the Shuangliu Airport, the passengers unharmed.
Yet birds do fly at higher altitudes. Bird flight at 20,000 feet, where less than half the oxygen is present than at sea level, is impressive if only because the work is achieved by living muscle tissue. A Himalayan mountain climber at 16,000 feet was rather amazed when a flock of geese flew northward about two miles over his head honking as they went. At 20,000 feet a man has a hard time talking while running, but those geese were probably flying at 27,000 feet and even calling while they traveled at this tremendous height. Numerous other observations have come from the Himalayas. Observers at 14,000 feet recorded storks and cranes flying so high that they could be seen only through field glasses. In the same area large vultures were seen soaring at 25,000 feet and an eagle carcass was found at 26,000 feet.
Other accurate records on altitude of migratory flights are scanty, although altimeter observations from airplanes and radar are becoming more frequent in the literature. For example, a Mallard was struck by a commercial airliner at 21,000 feet over the Nevada desert.
Originally posted by elevenaugust
....A bird? At 26.000 ft?
Under conditions of progressive hypoxia, oxygen transport was compared in bar-headed geese (Anser indicus), a species which breeds on the Tibetan Plateau and migrates at altitudes up to 9200 m, and Pekin ducks (Anas platyrhynchos, forma domestica), a similarly sized, sea-level waterfowl that does not fly. Pekin ducks showed no altitude-induced behavioral effects (e.g., restlessness) up to 7620 m, while bar-headed geese tolerated 10,668 m with no observable changes.
Originally posted by freelance_zenarchist
reply to post by smurfy
Got a map to "elsewhere"?
Originally posted by whywhynot
reply to post by jude11
Google "Boeing 757 climb rate" and you will see that it could very easily make that altitude in 20 minutes.
Info on bird flight altitude
edit on 6-6-2013 by whywhynot because: (no reason given)