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Old 26th Aug 2018, 23:53
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Okihara
 
Join Date: Mar 2018
Location: Currently: A landlocked country with high terrain, otherwise Melbourne, Australia + Washington D.C.
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Last light question
This question came up in a practice exam:

Given: Planned flight time from Archerfield to Mackay is 140 min.
What is the latest departure time you can plan to depart from Archerfield to Mackay on May 27th?
  1. 270533 UTC
  2. 270513 UTC
  3. 270503 UTC
  4. 270523 UTC
The correct answer is given to be 3, 270503 UTC but that doesn't right to me.
EOD on May 27th is 0753 UTC (checked on NAIPS).
In my view, planning for an arrival 10 min before last light means landing at Mackay at 0743 UTC at the latest.
With 140 min or 2h20 min of flight time, this translates into leaving by 0523 UTC, not 0503 UTC.

Can anyone confirm or rectify my reasoning?
Last edited by Okihara; 27th Aug 2018 at 13:12.
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