21. Bird strike is not confined to any one particular area of airspace, it can happen on the ground as well as in the skies, and anywhere in between. Studies have shown that the majority of bird strikes occur when the aeroplane is doing what?
From Quiz I'm Glad Moose Don't Fly
Answer:
Approaching for landing
Once again using figures from the U.S. Federal Aviation Administration, a fourteen year study between 1990 and 2003 found that out of a total of 39,459 known instances of bird strike to civilian aircraft, 15,065 (38%) occurred during the aeroplane's landing approach. This was almost double the second most common time of during the take-off run at 7,810 (20%). The entire landing phase of the aircraft (the descent, approach and landing roll) accounted for 22,989 (58%) of all bird strikes. The overall view of the statistics showed that aeroplanes could indeed be subjected to bird strike anywhere and at anytime, but the greatest risk was at an altitude of less than one kilometre, and either at, or within very close proximity to the airport.