Flight release rules
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School
Utah Valley University *
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Course
3300
Subject
Industrial Engineering
Date
Jan 9, 2024
Type
Pages
2
Uploaded by mfrarer
Calculate the minimum flag fuel requirements (per the regulations) given the aircraft
specifications and flight profile listed above. Assume you do not have an alternate airport,
and there are no wind considerations.
The Minimum flag fuel requirements for a would-be found under part 121.645. Since we
do not have any wind. We can find our minimum fuel by adding fuel required for taxing and our
trip, divided by the range. With this specific trip, our minimum fuel would be 15,600.624.
30 minutes before your flight is scheduled to depart, the ground operations representative
for your company informs you that 10,000 pounds of cargo is being loaded on your
aircraft. You have been assured (and you know) that A) there is room onboard your
aircraft for the cargo, and B) the extra weight will be within center of gravity limits and
takeoff limits for your aircraft. What is your new flag fuel requirements, given the new
weight of the aircraft flying? Again, assume you do not have an alternate airport, and
there are no wind considerations.
To calculate this, we need to find the aircraft's new weight. The empty weight is 62,000
lbs, the fuel weight is the maximum usable fuel (32,000 lbs), and the cargo weight is 10,000 lbs.
The aircraft's maximum takeoff weight is 110,000. The new flag fuel requirement would be
286,015.
To compound things, you get a call from dispatch that says that a newly updated weather
report indicates that a thunderstorm will move through the AUS area 45 minutes before
you land, reducing the ceiling to a foretasted 1,000 feet, and visibility to 2 statute miles.
While the thunderstorm is only supposed to last approximately 30 minutes, returning
conditions to a sunny, partly cloudy VFR day at the time of landing (That’s Texas weather
for you), what do you now need to ask the dispatcher about? What are your new flag fuel
calculations, both with the cargo and without?
When planning an alternate we have to have to have enough fuel to get us to the alternate
plus 45 minutes after. We would need an extra 260 pounds of fuel without the cargo and an extra
70.6 pounds with the extra cargo weight.
During your preflight flight release review, the Captain informs you that they are a
“High-Mins” Captain. What does that mean for your flight?
A "High-Mins" Captain refers to a pilot who is authorized or qualified to operate under
higher minimums (minimum weather conditions) than standard for a specific approach or airport.
This designation is often associated with captains who have received additional training and
certification to conduct approaches and landings in weather conditions that would otherwise
require diversion or alternate actions. For this flight, it means we might be able to get into our
original planned airport, but we should still plan for an alternate just in case.
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