by expat » Fri Mar 30, 2007 11:55 am
Does a bird really affect the engine so much that it creats a plane crash? an aviation expert and teacher that i know saids that a medum sized bird will not do anything but creat a bit of a glitch in the flight.

Bearing in mind that bird ingestion happens hourly around the world somewhere and the news and papers are not full of plane crashes, the simple answer is no. However, simple is not always the correct answer. In extreme cases, yes it can and has brought down aircraft. At the airport I work at, in the next couple of months, bird strikes will almost be a daily occurance but no biggy. Last year a 737-800 ingested a mouse buzzard on thrust reverse. The only reason the crew knew about it was a passenger reported seeing a feather fountain around the engine to one of the cabin crew. The cockpit crew on debrief said there was no engine parameter fluctuation to indicate the strike. We washed it out and carried out the following......Generally this involves cleaning a red grease spot of the aircraft. Engine ingestion happens, but the response to that ingestion takes two different paths with the 737. Firstly if the bird has been ingested, nine times out of ten centrifugal force throws the bird remains to the outside of the fan and out of the bypass. If this is the case, a visual inspection front and rear with a torch is all that is requires. If the bird has entered the core engine (bearing in mind that the air intake ring for the core is only about four inch circumference behind the first stage fan this also helps the nine out of ten factor) then the engine has to be boroscope inspected. No damage, up she goes again.
Matt
"A bit of a pickle" - British translation: A catastrophically bad situation with potentially fatal consequences.
PETA

People Eating Tasty Animals.
B1 (Cat C) licenced engineer, Boeing 737NG 600/700/800/900 Airbus A318/19/20/21 and Dash8 Q-400
1. Captain, if the problem is not entered into the technical logbook.........then the aircraft does not have a problem.
2. And, if you have time to write the fault on a napkin and attach to it to the yoke.........you have time to write it in the tech log....see point 1.