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sonicruiser
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Posts: 921
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Delays on DL BOM-JFK

Mon Dec 30, 2019 7:22 pm

Just looked at FR24 to see how DL's India flight is doing, I was surprised to see it was delayed by 1-2hrs every day since launch. I could understand that on one or two days but it's been a week and it doesn't look like they've ironed out the issues that are causing it. Delta doesn't usually have back to back timing issues like this on a specific flight, strangely JFK-BOM has been on time and there doesn't seem to be any problems there, the delays seem to roll in once the plane has to turn around in BOM. Is this problem with BOM not being able to handle it or something?
Last edited by sonicruiser on Mon Dec 30, 2019 7:28 pm, edited 1 time in total.
شما می توانید مردم را تحریم کنید ، اما نمی توانید سبک تحریم را اعمال کنید

You can sanction people, but you can't sanction style
 
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747d10
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Re: Major delays on DL BOM-JFK

Mon Dec 30, 2019 7:27 pm

It has, however arrived on time (even early) for the past five days, per info on FR24.
E145 E190 F100 L10/15 DC8 D8S D10 M11 D91/S/5 M80 M90 717 727/S 732/3/4/5/G/8/9 741/42/43/44 752 762/3/4 77E/L 788 A300 310 319 320 321 333 Concorde
AA AC AF AL AQ AS BN CI CO CX DL EA FL HA HU HY KL MC MU MX NA NC NW OZ PA PI QH RC SQ TI TW UA US WA 9K
 
MIflyer12
Posts: 8240
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Re: Major delays on DL BOM-JFK

Mon Dec 30, 2019 7:30 pm

DL 25 BOM-JFK has arrived within 60 minutes of scheduled time five out of the last six days as reported by Flightaware. I don't see that as 1-2hrs every day since launch You're looking for drama where there is none.
 
sonicruiser
Topic Author
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Re: Major delays on DL BOM-JFK

Mon Dec 30, 2019 7:33 pm

MIflyer12 wrote:
DL 25 BOM-JFK has arrived within 60 minutes of scheduled time five out of the last six days as reported by Flightaware. I don't see that as 1-2hrs every day since launch You're looking for drama where there is none.


Image
شما می توانید مردم را تحریم کنید ، اما نمی توانید سبک تحریم را اعمال کنید

You can sanction people, but you can't sanction style
 
usflyguy
Posts: 1757
Joined: Thu Jan 12, 2012 7:29 am

Re: Major delays on DL BOM-JFK

Mon Dec 30, 2019 7:36 pm

sonicruiser wrote:
MIflyer12 wrote:
DL 25 BOM-JFK has arrived within 60 minutes of scheduled time five out of the last six days as reported by Flightaware. I don't see that as 1-2hrs every day since launch You're looking for drama where there is none.


Image


Oops.
My post is my ideas and my opinions only, I do not represent the ideas or opinions of anyone else or company.
 
estabulla
Posts: 10
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Re: Major delays on DL BOM-JFK

Mon Dec 30, 2019 7:42 pm

My guess is ops at BOM...knowing how busy that airport is at night, availability of gates and all, I would not be surprised if it has to do with turning the equipment around in time. Looking at the data above, it would appear the delays could also be because of congestion (single runway ops). I am taking this flight in Jan, and my wife is taking this flight in Feb. I'll surely report back on what we see. I am sure Delta is evaluating the situation and will adjust the schedule accordingly. I think the arrival time into JFK has been set early enough to allow adequate connection times even when the flight is delayed by 1-2 hours.
estabulla
 
estabulla
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Joined: Tue Feb 13, 2007 12:41 pm

Re: Major delays on DL BOM-JFK

Mon Dec 30, 2019 7:51 pm

Check arrivals...that gives the airline (and its handlers) around an hour to service the plane, cater it and get it ready for departure (assuming 30 minutes for clearing the plane, and 45 min for boarding). Is that too tight in a place like BOM?

https://www.flightradar24.com/data/flights/dl24
estabulla
 
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Spiderguy252
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Re: Major delays on DL BOM-JFK

Mon Dec 30, 2019 8:13 pm

Looks like it enters and departs BOM at the peak-est of the international banks.

Even in the best of times if you miss your slot at BOM you are set back at least 45 minutes.
Vahroone
 
Cointrin330
Posts: 2058
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Re: Major delays on DL BOM-JFK

Mon Dec 30, 2019 8:38 pm

Oh my, Delta having a slight teething problem on a (re) launched route....wow.....and AA can't seem to make JFK-GEO operate reliably either. What is this world coming to???
 
jbs2886
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Re: Major delays on DL BOM-JFK

Mon Dec 30, 2019 8:55 pm

sonicruiser wrote:
MIflyer12 wrote:
DL 25 BOM-JFK has arrived within 60 minutes of scheduled time five out of the last six days as reported by Flightaware. I don't see that as 1-2hrs every day since launch You're looking for drama where there is none.


Image


A number of those are actually under 1 hour, but fair enough to round to 1 hour. You should, however, compare it to BOM-EWR on AI and UA. In both cases, there were similar significant delays for the 28-31. DL did have delays for the first few days unlike the other two.

TL;DR DL isn't *that* unusual from the other airlines (as another poster noted based on the timings).
 
OB1504
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Re: Major delays on DL BOM-JFK

Mon Dec 30, 2019 9:05 pm

estabulla wrote:
Check arrivals...that gives the airline (and its handlers) around an hour to service the plane, cater it and get it ready for departure (assuming 30 minutes for clearing the plane, and 45 min for boarding). Is that too tight in a place like BOM?

https://www.flightradar24.com/data/flights/dl24


An hour isn’t nearly enough time for an international widebody turn. You need at least 85 or 90 minutes.
 
United1
Posts: 4184
Joined: Wed Oct 08, 2003 9:21 am

Re: Major delays on DL BOM-JFK

Mon Dec 30, 2019 9:11 pm

jbs2886 wrote:
sonicruiser wrote:
MIflyer12 wrote:
DL 25 BOM-JFK has arrived within 60 minutes of scheduled time five out of the last six days as reported by Flightaware. I don't see that as 1-2hrs every day since launch You're looking for drama where there is none.


Image


A number of those are actually under 1 hour, but fair enough to round to 1 hour. You should, however, compare it to BOM-EWR on AI and UA. In both cases, there were similar significant delays for the 28-31. DL did have delays for the first few days unlike the other two.

TL;DR DL isn't *that* unusual from the other airlines (as another poster noted based on the timings).


With the exception being today I'm not seeing these delays on UA that you speak of (times from UA.com)

UA49
28th departed 1 minute late and arrived EWR 16 minutes early
29th departed 1 minute early and arrived EWR 11 minutes early
30th departed 3 minutes early and arrived EWR 5 minutes late
31st departed 35 minutes late and inflight estimated to arrive 1 hour 8 minutes late (ATC delay)

I'm sure DL is just getting caught up with ATC issues...you will probably see a retime of the flights in a bit once DL gets a bit more comfortable with operating the route.
I know the voices in my head aren't real but sometimes their ideas are just awesome!!!
 
jbs2886
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Re: Major delays on DL BOM-JFK

Mon Dec 30, 2019 9:25 pm

United1 wrote:
jbs2886 wrote:
sonicruiser wrote:

Image


A number of those are actually under 1 hour, but fair enough to round to 1 hour. You should, however, compare it to BOM-EWR on AI and UA. In both cases, there were similar significant delays for the 28-31. DL did have delays for the first few days unlike the other two.

TL;DR DL isn't *that* unusual from the other airlines (as another poster noted based on the timings).


With the exception being today I'm not seeing these delays on UA that you speak of (times from UA.com)

UA49
28th departed 1 minute late and arrived EWR 16 minutes early
29th departed 1 minute early and arrived EWR 11 minutes early
30th departed 3 minutes early and arrived EWR 5 minutes late
31st departed 35 minutes late and inflight estimated to arrive 1 hour 8 minutes late (ATC delay)

I'm sure DL is just getting caught up with ATC issues...you will probably see a retime of the flights in a bit once DL gets a bit more comfortable with operating the route.


I used the same source - FlightRadar24. I suspect the airline's website shows different data (gate vs. takeoff).
 
United1
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Re: Major delays on DL BOM-JFK

Mon Dec 30, 2019 9:39 pm

jbs2886 wrote:
United1 wrote:
jbs2886 wrote:

A number of those are actually under 1 hour, but fair enough to round to 1 hour. You should, however, compare it to BOM-EWR on AI and UA. In both cases, there were similar significant delays for the 28-31. DL did have delays for the first few days unlike the other two.

TL;DR DL isn't *that* unusual from the other airlines (as another poster noted based on the timings).


With the exception being today I'm not seeing these delays on UA that you speak of (times from UA.com)

UA49
28th departed 1 minute late and arrived EWR 16 minutes early
29th departed 1 minute early and arrived EWR 11 minutes early
30th departed 3 minutes early and arrived EWR 5 minutes late
31st departed 35 minutes late and inflight estimated to arrive 1 hour 8 minutes late (ATC delay)

I'm sure DL is just getting caught up with ATC issues...you will probably see a retime of the flights in a bit once DL gets a bit more comfortable with operating the route.


I used the same source - FlightRadar24. I suspect the airline's website shows different data (gate vs. takeoff).


Hmmmm checking FlightRadar24 a couple of the flights that UA and flightradar show as ontime when you look at the actual arrival time are coded red on flightradar...indicating they are running late...even though they were not.

I haven't checked DL.com but I would advise the OP to use the info that DL, UA or AA provides vs the info from flightradar/flightstats ect. The airlines do have reporting requirements and while there are some games they all play for the most part they are fairly accurate. Flightradar and all other sites don't have to report their data and there is no requirement for it to be accurate.
I know the voices in my head aren't real but sometimes their ideas are just awesome!!!
 
eamondzhang
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Re: Major delays on DL BOM-JFK

Mon Dec 30, 2019 9:57 pm

DL25's scheduled arrival time into JFK is 06:25am. All the other STAs given by FR24 is BS.

I've also noticed FR24 changing arrival time for other flights into the States as well - e.g. NH8, QF11, etc. Which is plain annoying.

Michael
 
IPFreely
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Re: Major delays on DL BOM-JFK

Mon Dec 30, 2019 10:05 pm

Looking at schedules, DL has flight duration of 15:00 for JFK-BOM and 16:00 for BOM-JFK.

In comparison, EWR-BOM is 14:45 on AI and 15:05 on UA and BOM-EWR is 16:00 on UA and 16:15 on AI.

DL needs to increase the scheduled time for this route, at least on the BOM-JFK leg, to build on-time performance.
 
panamair
Posts: 4343
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Re: Delays on DL BOM-JFK

Mon Dec 30, 2019 11:29 pm

As mentioned, FR24 and flightaware have some wrong scheduled arrival times. DL25 has a scheduled arrival time of 0625, not 0445 or 0452 as shown in the extract the OP used. So based on that, these have been the actual JFK gate arrivals according to delta.com:

12/24 1 hr 6 mins late 0731
12/25 55 mins late at 0720
12/26 18 mins late at 0643
12/27 No Ops
12/28 45 mins late at 0710
12/29 2 mins late at 0627
12/30 18 mins late at 0643

The only things FR24 gets right are the wheels up and touchdown times. Some days the westbound flight time has been longer than usual while the eastbound has been quite short. For example on 12/26 it was 15:40 with a block time of 16:00.

Arrivals into BOM are also affected quite a bit by ATC: DL24 from JFK has been taking an extra 1-15 minutes longer due to holds and turns near BOM.
 
EFHK
Posts: 425
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Re: Delays on DL BOM-JFK

Tue Dec 31, 2019 1:29 am

Like already mentioned, FR24 intl flight scheduled arrival times into the US are often erroneous once the plane is in the air. Don't know the reason for that, but I always use the future flights to determine which one is the actual scheduled arrival time.

In this case it seems to be 6:25, and it looks like most of the flights have been pretty much on time. Ignore the red and yellow.
 
DTWLAX
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Re: Delays on DL BOM-JFK

Tue Dec 31, 2019 2:26 am

I am not sure if this is the reason for take-off delays at BOM, but for nonstop flights to USA from India, each and every passenger has to go through a secondary bag check at the gate. Not sure if they have adequate staff to do that since there is the AI and UA flights also departing around the same time.
That secondary check takes a lot of time as well and there are limited gates at BOM that are capable of doing bag checks at gates prior to the final scan of the boarding pass before entering the jetbridge.
 
kavok
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Re: Delays on DL BOM-JFK

Tue Dec 31, 2019 2:43 am

Looking at the flight route, do all JFK/EWR-BOM flights actually travel over Afghanistan air space? I never realized that.
 
panamair
Posts: 4343
Joined: Fri Oct 12, 2001 2:24 am

Re: Delays on DL BOM-JFK

Tue Dec 31, 2019 3:22 am

kavok wrote:
Looking at the flight route, do all JFK/EWR-BOM flights actually travel over Afghanistan air space? I never realized that.


Most of the time yes, but there have been some
Southerly routings as well. For example DL24 JFK-BOM on 12/26 flew over France, then Egypt, Saudi Arabia and the UAE to get to BOM.

And FR24 is a mess with arrival times..for example tonight’s DL24 which is In the air already, according to FR24 is estimated to arrive BOM 20 mins late at 2255 but according to delta.com, flight is expected to arrive BOM at the gate 15 mins early at 2220.
 
airboss787
Posts: 274
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Re: Major delays on DL BOM-JFK

Tue Dec 31, 2019 3:34 am

eamondzhang wrote:
DL25's scheduled arrival time into JFK is 06:25am. All the other STAs given by FR24 is BS.

I've also noticed FR24 changing arrival time for other flights into the States as well - e.g. NH8, QF11, etc. Which is plain annoying.

Michael


I have noticed that as well. It is a big hassle when looking at flights. UA49, AI191 also have these weird arrival times that are not accurate and hence they get late when in fact, they are not.
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