Stack Exchange Network

Stack Exchange network consists of 174 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.

Visit Stack Exchange

Questions tagged [time]

Use this tag for questions regarding UTC, zulu time, daylight savings time, or flight time.

25
votes
4answers
8k views

What time zone is used for operating an airplane?

This might be a silly question but my thinking was the following: There has to be a definition of time in an airplane for the logging of data and so on, but what definition would that be assuming a ...
-6
votes
1answer
113 views

What is the flight time from Beirut to Paris using different aircraft?

If the distance between Beirut and Paris is 1985 miles / 3194.55 km / 1724.92 nautical miles, and a flight using Airbus 320-200 take 4 hours and 40 minutes, how much would it take using the following ...
2
votes
2answers
198 views

(How) do pilots round the time?

I'm wondering what's the time for pilots. Given the case the watch says 10:00:20 - is it basically 10:00? And when does 10:01 start? Is it past ...
-3
votes
2answers
256 views

Does a 40 years clean crashes sheet of airliner makes people fear to fly with them because there is bigger pressure on the company? [closed]

I am planning for my 2nd flight. The first flight was in November 2017 from Beirut to Istanbul which took 1h45min. I asked this question on this site, explaining my Phobia to professionals on the ...
1
vote
1answer
879 views

What is the maximum legal flight time for single pilots under Part 91/135 operations?

I'm referring to FAA Part 91 and 135 operations (or similar, EASA) and the maximum duration of one single flight (not the maximum duty time per day / week / month). If any, what are the legal flight ...
5
votes
1answer
205 views

What are the missions of high-endurance aircraft?

What have been the missions of some notable high-endurance aircraft -- ones that can stay airborne for several days. Obviously, high-endurance missions have refueling, food, and human factors concerns ...
2
votes
0answers
202 views

Are there any apps for easy Part 135 Flight Time and Duty Period calculations? [closed]

I need a solution to quickly and easily assist me in calculating Part 135 duty time. I am a charter broker and presently use estimations for my own consideration, but rely on advice from operators ...
1
vote
3answers
2k views

What is the exact definition of Taxi Time?

I found some definitions on the web, but they weren't same. Some resources mentioned it is sum of the times the aircraft is moving on the ground with its own engines. Some defined it as the time ...
2
votes
1answer
370 views

Under EASA regulations, what constitutes loggable flight time?

It wasn't too hard to find questions and answers here discussing flight time as defined by the US FAA. However, I'm curious about EASA regulations, and if applicable specifically as implemented in ...
6
votes
2answers
977 views

Can I log any PIC time if my medical certificate is out of date and I haven't flown in 20 years?

I haven't flown in 20 years. My medical certificate is not up to date. Can I log a fam flight with a local instructor?
3
votes
2answers
4k views

Does Daylight Saving Time affect the flight time?

Say an example flight FRA-LHR, was scheduled say 9am every day. Now will that flight be then moved to 10am once the change to DST happens or will it remain at 9am? I would expect the flight times ...
4
votes
1answer
218 views

How to calculate flight time from time at full throttle?

I'm building an electrically powered paraglider, and I'm trying to reach one hour of flight time. I've resolved to using 2 18-kilowatt motors. I could use one 35-kilowatt motor, but I'd wrather not ...
9
votes
3answers
2k views

Why is a sweeping second hand required for IFR?

The reasons why a clock is necessary for IFR have been explained elsewhere, but I haven't seen the reason that the clock has to have a sweeping second hand. It seems like when timing things it would ...
2
votes
1answer
3k views

How to calculate estimated flight time?

I am trying to calculate estimated flight time accurately. I calculate the distance with the great-circle distance method. I have some specifications of the aircraft such as max speed, cruise speed, ...
2
votes
2answers
185 views

What causes the average speed difference between the JFK to DEN flights and the JFK to LAX flights?

I just realized shortest JFK - DEN flights are ~4h40m (280 min) and shortest JFK - LAX flights are ~6h (360 min). I'm talking about currently available commercial flights. NY - DEN (straight line) ...
9
votes
1answer
649 views

How much earlier/later is sunrise/sunset at 40,000 feet?

If I'm over New York City, and sunrise is 6am, I will see the sunrise earlier when I'm at 40,000 feet on the plane. I think that latitude plays a role here, but using NYC as an example, how much ...
8
votes
6answers
4k views

Is there an official FAA source for time zone of an airport?

Looking at this answer, from TypeIA, to the question How to get timezone from airport code (IATA/FAA) . This person is recommending the NASR database, which is good because it's official FAA stuff, ...
4
votes
1answer
334 views

Why are fighter jets rated differently than passenger jets?

Recently I watched a video on the economics of running an airline. They mentioned that passenger planes have a life span rated in cycles. That got me thinking because as far as I know, fighter jets ...
5
votes
3answers
607 views

How do pilots fight jet lag?

Jet lag, medically referred to as desynchronosis and rarely as circadian dysrhythmia, is a physiological condition which results from alterations to the body's circadian rhythms resulting from ...
8
votes
2answers
718 views

Which one is considered the departure time of a commercial flight?

I was wondering, the publicly announced departure time of a commercial flight, is it the ETOT (estimated takeoff time) or is it the EOBT (estimated off-block time)? Or maybe some other time?
1
vote
1answer
3k views

How can LMT be converted to UTC time?

I am trying to solve some problems on converting from LMT (local mean time) to UTC (coordinated universal time) for flight planning purposes and I have some doubts. The problem is the following: If ...
1
vote
1answer
658 views

Is there a standard time zone for flight schedules? [duplicate]

I was reading a question on Travel.SE. The asker was asking whether the time on his ticket was in Daylight Savings Time or in standard time. I would imagine flight schedules are supposed to be time-...
11
votes
1answer
10k views

How much time does an landing/take-off add to an otherwise direct flight?

I'm interested to know how much time a descent and ascent to crusing altitude takes as part of a longer journey. A standard jet-aircraft (for example a A340 or 777) flys for eight hours from City A ...
-2
votes
1answer
4k views

Hobbs vs Tach time? [duplicate]

Other posts didn't answer my question. In A&P school months ago they told us the difference and can't find where I wrote this down. One of them was used to find engine time and the other was used ...
5
votes
1answer
119 views

Time Tracking: Does Turboshaft count towards Turbine time?

another edit To clarify - I'm programming an application for logbook tracking and want to automate turbine time calculations to help people fill in insurance firms easily. edit: I guess a more ...
14
votes
5answers
21k views

Why does aviation use Zulu time instead of the local time?

When reading aviation literature, it's common to find references to Zulu Time. What is Zulu Time? Why does aviation use Zulu Time instead of the local time?
7
votes
1answer
289 views

What factors besides tail/headwinds cause the time taken to fly some routes to be different from the time it takes to return?

I've observed this on many flight trackers; the time taken to fly from A to B is not necessarily the same as the time taken to fly back from B to A. Why is this so and what external factors besides ...
20
votes
7answers
3k views

Does Daylight Saving Time affect local airspace?

Only some countries use Daylight Saving Time. In Canada, some provinces use and don't use DST (such as Saskatchewan). However, in remote and local regions where this is not observed, what would happen?...
15
votes
3answers
3k views

Is there any reason to use only UTC standard time in aircraft and not GMT?

Why are we not using the GMT time standard in an aircraft? Why is only UTC the standard on-board?
19
votes
4answers
3k views

Why is a clock necessary for IFR?

According to FAR 91.205 (d)(6), one instrument required for IFR is: A clock displaying hours, minutes, and seconds with a sweep-second pointer or digital presentation. Why is it necessary to ...