Mr. Midnight

04-21-2010, 02:44 PM

hello folks im trying to take a open book test and the answer to the question i gave was c .

they said the answer was wrong.

im not for sure how to get the answer.

ATC has issued you clearance to "Descend at pilots discretion to cross KAYLA at One-One Thousand (11,000 FT MSL)". You are flying at FL290 (29,000 FT MSL), your aircraft has an approximate groundspeed of 300 nautical miles per hour and your aircraft has a standard descent rate of 2,000 FT per minute.

Approximately how many nautical miles away from KAYLA would be the minimum distance that you should start your "Top of Descent" to cross KAYLA at 11,000 FT MSL and how many minutes will this take?

also i have to be at 250 kts when i arrive at kayla

A: 30 Nautical Miles and 6 Minutes.

B: 45 Nautical Miles and 9 Minutes.

C: 60 Nautical Miles and 12 Minutes.

D: 75 Nautical Miles and 15 Minutes.

how would i calculate the right answer.

Thanks.....Robert

they said the answer was wrong.

im not for sure how to get the answer.

ATC has issued you clearance to "Descend at pilots discretion to cross KAYLA at One-One Thousand (11,000 FT MSL)". You are flying at FL290 (29,000 FT MSL), your aircraft has an approximate groundspeed of 300 nautical miles per hour and your aircraft has a standard descent rate of 2,000 FT per minute.

Approximately how many nautical miles away from KAYLA would be the minimum distance that you should start your "Top of Descent" to cross KAYLA at 11,000 FT MSL and how many minutes will this take?

also i have to be at 250 kts when i arrive at kayla

A: 30 Nautical Miles and 6 Minutes.

B: 45 Nautical Miles and 9 Minutes.

C: 60 Nautical Miles and 12 Minutes.

D: 75 Nautical Miles and 15 Minutes.

how would i calculate the right answer.

Thanks.....Robert