anshabhi
Topic Author
Posts: 1532
Joined: Thu Oct 20, 2016 10:40 am

Air India flight 173 is now the world's longest flight?

Thu Oct 20, 2016 11:07 am

Just saw a https://youtube.com/watch?v=6WNcmPP7rk0 video. (Apparently I am among the first few people to watch it)! In which the publisher claims that AI 173 is now the world's longest flight, with some solid evidence. It now covers over 15,000 kilometers from Delhi to San Francisco in less than 15 hours.
Some supporting evidence ln the video:
1. https://uk.flightaware.com/live/flight/AIC173Flightaware
2. https://www.flightradar24.com/blog/air-india-taking-advantage-of-tailwinds/ Flightradar24

Is AI 173 indeed the world's longest flight now? Currently the longest flight DXB-AKL falls over 400 miles short of this.
I got some real work to do now. Bye!
 
sadiqutp
Posts: 234
Joined: Thu Sep 08, 2016 5:05 pm

Re: Air India flight 173 is now the world's longest flight

Thu Oct 20, 2016 12:51 pm

I don't think so. I believe the longest flight is ranked based on the great circle measurement.
It's technically correct that the flight was the longest, but it was done that way to take advantage of the jet stream, hence saving time and and fuel. It is like avoiding the short way through the city and taking a highway around it because it's faster although longer.

Now, is the jet stream that made this flight the longest constant throughout the year? I am not an expert to answer
 
User avatar
tjwgrr
Posts: 2292
Joined: Fri Mar 24, 2000 4:09 am

Re: Air India flight 173 is now the world's longest flight

Thu Oct 20, 2016 1:01 pm

GCM shows the following:

DEL-SFO 12402 KM / 7706 MI
DXB-AKL 14200 KM / 8824 MI

Not even close.
Direct KNOBS, maintain 2700' until established on the localizer, cleared ILS runway 26 left approach.
 
anshabhi
Topic Author
Posts: 1532
Joined: Thu Oct 20, 2016 10:40 am

Re: Air India flight 173 is now the world's longest flight

Thu Oct 20, 2016 1:08 pm

sadiqutp wrote:
I don't think so. I believe the longest flight is ranked based on the great circle measurement.
It's technically correct that the flight was the longest, but it was done that way to take advantage of the jet stream, hence saving time and and fuel. It is like avoiding the short way through the city and taking a highway around it because it's faster although longer.

Now, is the jet stream that made this flight the longest constant throughout the year? I am not an expert to answer


I think the total distance flown matters. In this case, the flight is flying opposite to the great circle route. Talking about Great circle route would thus be meaningless.
I am also not an expert, but I did some research and figured out that Jetstreams stay there for the entire year, and they only slow down a bit in summers.

A good article: http://climate.ncsu.edu/edu/k12/.JetStreams

Air India started this route very late probably because DGCA granted it permission only in October to fly over Pacific.
I got some real work to do now. Bye!
 
Joelatbsl
Posts: 622
Joined: Fri Jan 21, 2005 8:51 pm

Re: Air India flight 173 is now the world's longest flight

Thu Oct 20, 2016 1:20 pm

Suppose the confusing bit about this is that they managed to be 2 hours quicker than before, even though in terms of distance, the flight is now much longer than before they were granted permission to fly this.

Anyway, records should be tumbling here there and everywhere once airlines start to max out the range on their A350s and B787-9s ...
 
rebr
Posts: 180
Joined: Sat Aug 31, 2013 6:26 pm

Re: Air India flight 173 is now the world's longest flight

Thu Oct 20, 2016 1:24 pm

I think the term 'longest flights' should refer to the flight duration not the distance flown. If I would take a 15+ hour flight and the airline can shave off 2 hours by flying almost 1000mi more, I'd be more then happy to have them fly the extra distance. As a passenger I would care about the flight duration, not the distance

If we're talking about distance I kind of agree the distance flown matters, not the great circle route...
Comparing AI173 to EK448 on 18th of October:
https://flightaware.com/live/flight/AIC ... /VIDP/KSFO
https://flightaware.com/live/flight/UAE ... /OMDB/NZAA
The distance flown by AI173 is significantly longer then EK448, so I would say yes the AI flight is currently the longest flight by distance.

Side note: The wikipedia top list of longest flights also puts AI above EK; https://en.wikipedia.org/wiki/Non-stop_ ... st_flights
 
dmstorm22
Posts: 355
Joined: Wed Jun 15, 2016 1:49 pm

Re: Air India flight 173 is now the world's longest flight

Thu Oct 20, 2016 2:02 pm

rebr wrote:
I think the term 'longest flights' should refer to the flight duration not the distance flown. If I would take a 15+ hour flight and the airline can shave off 2 hours by flying almost 1000mi more, I'd be more then happy to have them fly the extra distance. As a passenger I would care about the flight duration, not the distance

If we're talking about distance I kind of agree the distance flown matters, not the great circle route...
Comparing AI173 to EK448 on 18th of October:
https://flightaware.com/live/flight/AIC ... /VIDP/KSFO
https://flightaware.com/live/flight/UAE ... /OMDB/NZAA
The distance flown by AI173 is significantly longer then EK448, so I would say yes the AI flight is currently the longest flight by distance.

Side note: The wikipedia top list of longest flights also puts AI above EK; https://en.wikipedia.org/wiki/Non-stop_ ... st_flights


I feel like the Wiki entry was recently updated and this is probably the only flight listed in the Top-30 that is not calculated by GC distance.

I agree that in the spirit of 'longest flight' this is probably the longest and this seems to be a more or less permanent way of flying (over pacific), but there needs to be a consistent baseline we are calculating this off of.

BTW, will AI start advertising this as the Worlds Longest Flight?

Also want to point out that even if we say this is the World's Longest Flight... it is still not longer than what SIN-NYC will be by GC distance. Unless we get SYD-NYC or SYD-LAX in future, nothing will really beat SIN-NYC.
 
flyinTLow
Posts: 470
Joined: Tue Oct 12, 2004 10:40 pm

Re: Air India flight 173 is now the world's longest flight

Thu Oct 20, 2016 2:32 pm

Jetstreams shift all over the place, and all of this also depends on which runway was used for departure and arrival, how much traffic there was on departure and arrival. There really is no other fair way of comparison unless you refer to GC distance.
- When dreams take flight, follow them -
 
timz
Posts: 6474
Joined: Fri Sep 17, 1999 7:43 am

Re: longest flight

Thu Oct 20, 2016 5:11 pm

rebr wrote:
I think the term 'longest flights' should refer to the flight duration not the distance flown.

So in your book the longest flight in history was the Catalina from Perth to Ceylon circa 1943-- 3500 miles or some such. Want to take a vote on whether that was the longest flight ever?
 
rebr
Posts: 180
Joined: Sat Aug 31, 2013 6:26 pm

Re: longest flight

Thu Oct 20, 2016 8:44 pm

timz wrote:
rebr wrote:
I think the term 'longest flights' should refer to the flight duration not the distance flown.

So in your book the longest flight in history was the Catalina from Perth to Ceylon circa 1943-- 3500 miles or some such. Want to take a vote on whether that was the longest flight ever?

Yes sure lets take a bet. Kidding of course, I am talking about todays situation, commercial scheduled flights that "normal" people can take. Otherwise there's is also the Solar Impulse 2 that flew from Japan to Hawaii in just under 118 hours.
 
NichCage
Posts: 916
Joined: Wed Jun 22, 2016 6:43 pm

Re: Air India flight 173 is now the world's longest flight

Thu Oct 20, 2016 9:38 pm

If DEL-SFO will be within the 14-15 hour range, then it is not the longest flight in the world when it comes to hours. For example, SFO-SIN is just a little bit more than 17 hours.
 
anshabhi
Topic Author
Posts: 1532
Joined: Thu Oct 20, 2016 10:40 am

Re: Air India flight 173 is now the world's longest flight

Fri Oct 21, 2016 4:49 pm

Woah!!!
Air India 173 today flew over 10,000 miles (16,100 km)
https://flightaware.com/live/flight/AIC173
I got some real work to do now. Bye!
 
anshabhi
Topic Author
Posts: 1532
Joined: Thu Oct 20, 2016 10:40 am

Re: Air India flight 173 is now the world's longest flight

Fri Oct 21, 2016 5:47 pm

Is anyone else also wondering, why is the mainstream media not talking about AI 173? They had an article when a BA flight went over 1200 km/h, and often have articles over small things like a tire bust or a medical emergency.. Why not this then?

I could find only one article over it, from Ben arguably the world's number 1 miles and points blogger. http://onemileatatime.boardingarea.com/ ... st-flight/
I got some real work to do now. Bye!
 
User avatar
777Jet
Posts: 6772
Joined: Sat Mar 08, 2014 7:29 am

Re: Air India flight 173 is now the world's longest flight

Sun Oct 23, 2016 12:11 am

anshabhi wrote:
Woah!!!
Air India 173 today flew over 10,000 miles (16,100 km)
https://flightaware.com/live/flight/AIC173


The 777-200LR doing what it was made for!
DC10-10/30,MD82/88/90,717,727,732/3/4/5/7/8/9ER,742/4,752/3,763/ER,772/E/L/3/W,788/9,306,320,321,332/3,346,359,388
 
Viscount724
Posts: 19316
Joined: Thu Oct 12, 2006 7:32 pm

Re: Air India flight 173 is now the world's longest flight

Sun Oct 23, 2016 1:37 am

anshabhi wrote:
Woah!!!
Air India 173 today flew over 10,000 miles (16,100 km)
https://flightaware.com/live/flight/AIC173


Where are you seeing that? The Flightaware link itself shows the routing flown as 9072 statute miles (7883 nm or 14,600

I agree with other comments that you can't use the actual routing flown for comparison purposes since the routes flown vary widely by direction of travel, time of year, weather, jetstream location etc etc. You have to use a consistent measurement unit of which great circle distance is the best, except for ad hoc isolated comparisons involving specific flights.

You just have to look at routings flown by the many west coast-Europe nonstops. Sometimes they will almost overfly east coast points like JFK or YUL while the next day they may go over the arctic regions of Canada and across Greenland due to the shifting location of the jetstream.
 
anshabhi
Topic Author
Posts: 1532
Joined: Thu Oct 20, 2016 10:40 am

Re: Air India flight 173 is now the world's longest flight

Sun Oct 23, 2016 4:21 am

Viscount724 wrote:
anshabhi wrote:
Woah!!!
Air India 173 today flew over 10,000 miles (16,100 km)
https://flightaware.com/live/flight/AIC173


Where are you seeing that? The Flightaware link itself shows the routing flown as 9072 statute miles (7883 nm or 14,600

I agree with other comments that you can't use the actual routing flown for comparison purposes since the routes flown vary widely by direction of travel, time of year, weather, jetstream location etc etc. You have to use a consistent measurement unit of which great circle distance is the best, except for ad hoc isolated comparisons involving specific flights.

You just have to look at routings flown by the many west coast-Europe nonstops. Sometimes they will almost overfly east coast points like JFK or YUL while the next day they may go over the arctic regions of Canada and across Greenland due to the shifting location of the jetstream.


See the distance travelled for 21st October.
I got some real work to do now. Bye!
 
User avatar
AirIndia
Posts: 1213
Joined: Sun Jan 14, 2001 2:43 am

Re: Air India flight 173 is now the world's longest flight

Sun Oct 23, 2016 6:46 am

anshabhi wrote:
Is anyone else also wondering, why is the mainstream media not talking about AI 173? They had an article when a BA flight went over 1200 km/h, and often have articles over small things like a tire bust or a medical emergency.. Why not this then?

I could find only one article over it, from Ben arguably the world's number 1 miles and points blogger. http://onemileatatime.boardingarea.com/ ... st-flight/


Its got picked up today in Indian media, mainly TOI. http://timesofindia.indiatimes.com/indi ... 005821.cms
 
User avatar
777Jet
Posts: 6772
Joined: Sat Mar 08, 2014 7:29 am

Re: Air India flight 173 is now the world's longest flight

Sun Oct 23, 2016 11:21 pm

Viscount724 wrote:
anshabhi wrote:
Woah!!!
Air India 173 today flew over 10,000 miles (16,100 km)
https://flightaware.com/live/flight/AIC173


Where are you seeing that? The Flightaware link itself shows the routing flown as 9072 statute miles (7883 nm or 14,600


Some interesting numbers:

On the 14th:

Duration: 16 hours 42 minutes, Flown: 13,299 km

On the 21st:

Duration: 15 hours 8 minutes, Flown: 16,422 km
DC10-10/30,MD82/88/90,717,727,732/3/4/5/7/8/9ER,742/4,752/3,763/ER,772/E/L/3/W,788/9,306,320,321,332/3,346,359,388
 
rrlopes
Posts: 48
Joined: Mon Jun 01, 2009 7:37 pm

Re: Air India flight 173 is now the world's longest flight?

Mon Oct 24, 2016 3:56 pm

Well, if you're taking into account the distance flown, then you must also consider any holding circuits you do on arrival, which is silly if you're talking about route distance. Therefore, I believe route distance comparison for aircraft should mostly be GC in order to be meaningful.
 
audian
Posts: 165
Joined: Thu Apr 09, 2015 2:05 pm

Re: Air India flight 173 is now the world's longest flight?

Mon Oct 24, 2016 5:09 pm

GC distance is just the shortest distance between two given points. Since the GC path is just a reference for flight path, IMO its should not be considered as gold standard to measure the flight times. I think AI deserve to claim the Worlds first longest commercial flight. It flew over 15,300 kms from point A to point B carrying real people. And no other commercial airliner has done that. So lets give some credit instead of arguing like lawyers.

Popular Searches On Airliners.net

Top Photos of Last:   24 Hours  •  48 Hours  •  7 Days  •  30 Days  •  180 Days  •  365 Days  •  All Time

Military Aircraft Every type from fighters to helicopters from air forces around the globe

Classic Airliners Props and jets from the good old days

Flight Decks Views from inside the cockpit

Aircraft Cabins Passenger cabin shots showing seat arrangements as well as cargo aircraft interior

Cargo Aircraft Pictures of great freighter aircraft

Government Aircraft Aircraft flying government officials

Helicopters Our large helicopter section. Both military and civil versions

Blimps / Airships Everything from the Goodyear blimp to the Zeppelin

Night Photos Beautiful shots taken while the sun is below the horizon

Accidents Accident, incident and crash related photos

Air to Air Photos taken by airborne photographers of airborne aircraft

Special Paint Schemes Aircraft painted in beautiful and original liveries

Airport Overviews Airport overviews from the air or ground

Tails and Winglets Tail and Winglet closeups with beautiful airline logos