If Felix 121 commences on time from marshal at 19:28 from Angels 14, at what altitude should Felix 121 be at 19:30:15?

To determine the altitude at which Felix 121 should be flying at 19:30:15, we first need to understand the rate of descent from the initial altitude of Angels 14. The question indicates Felix 121 is taking off from Angels 14 at 19:28 and we want to find the altitude at a specific time, which is 2 minutes and 15 seconds later.

Angels 14 corresponds to an altitude of 14,000 feet. In air traffic control, a standard rate of descent for aircraft typically varies, but a common rate for transitioning to a final approach could be assumed to be around 1,000 to 1,500 feet per minute.

If we consider that Felix 121 begins a descent shortly after takeoff, we can estimate how much altitude it would lose in that time frame. In 2 minutes and 15 seconds (which is 135 seconds), an aircraft descending at a rate of 1,000 feet per minute would drop approximately 2,250 feet (1,000 feet per minute multiplied by 2.25 minutes). That translates into roughly descending beyond Angels 14 to around Angels 11 or even lower.

However, if we assume a more conservative approach and a slightly more