Depart JFK Runway 4L-- Then Turn Left? — Civil Aviation Forum

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Depart JFK Runway 4L-- Then Turn Left?

Timz From United States of America, joined Sep 1999, 6465 posts, RR: 8
Posted (3 years 5 months 2 weeks 5 days 18 hours ago) and read 2396 times:

Looking at these two pics, seems clear they have just departed 4L and turned left- -which I wouldn't have thought they would ever do. Do they?

http://img6.imageshack.us/img6/9148/dscn4569q.jpg

http://img197.imageshack.us/img197/9491/dscn4571v.jpg

6 replies: All unread, jump to last

San747 From United States of America, joined Dec 2004, 4934 posts, RR: 13
Reply 1, posted (3 years 5 months 2 weeks 5 days 18 hours ago) and read 2307 times:

The pics are at a weird angle... you don't have the reference of 4L itself, so it can easily look like the aircraft had performed a quick left turn. IMO, having departed off 4L many times, I can tell you that the aircraft in those pics is definitely still flying runway heading.

Scotty doesn't know...

Evomutant From Canada, joined May 2006, 365 posts, RR: 0
Reply 2, posted (3 years 5 months 2 weeks 5 days 18 hours ago) and read 2294 times:

It looks straight on to me.

In any case, it would be non-standard. All of the SIDs from 4L require a right turn from memory.

Mir From United States of America, joined Jan 2004, 19687 posts, RR: 56
Reply 3, posted (3 years 5 months 2 weeks 5 days 18 hours ago) and read 2272 times:

Looks normal from what I can see.

Quoting Evomutant (Reply 2):
All of the SIDs from 4L require a right turn from memory.

Yeah, it's a right turn to a heading of 100 at the JFK 1.0 DME (though the controllers almost always amend this to 1.5 DME, I think to protect missed approaches on 4R).

Not to say that there couldn't have been a left turn, but it would definitely be non-standard.

-Mir

7 billion, one nation, imagination...it's a beautiful day

RJpieces From , joined Dec 1969, posts, RR:
Reply 4, posted (3 years 5 months 2 weeks 5 days 17 hours ago) and read 2239 times:

I was at JFK about two years ago when aircraft were taking off 4L and turning left. I was watching it from the parking garage near T4/T5. I remember discussing it with somebody on here who gave the reason for it, but I can not recall what it was.

Having said that, those pics look like runway heading to me...

MadDogJT8D From United States of America, joined Oct 2009, 350 posts, RR: 1
Reply 5, posted (3 years 5 months 2 weeks 5 days 17 hours ago) and read 2193 times:

Mir is definitely correct as to the SID and almost all 4L departures follow this procedure, runway heading to between 1 and 1.5 DME and then turning right to 100. The delay in turning to 100 is definitely to leave wiggle room for missed approaches on 4R, however, a lot of times they will wait to give takeoff clearance until the 4R arrival is over the numbers.

However, back in 2000 I flew a DL MD-88 JFK-ATL around Thanksgiving on a very foggy morning and we flew runway heading for about 1 DME then turned left to what I am pretty sure was direct RBV VOR. I remember this very distinctly as I was expecting a right turn instead and could see the smoke trail of an ATA 727 that departed before us off in the distance to the right as we turned left once we broke through the clouds. So it does happen every so often, probably when LGA has a gap in departures or arrivals and there is no traffic conflict in that airspace. Pretty rare though.

RJpieces From , joined Dec 1969, posts, RR:
Reply 6, posted (3 years 5 months 2 weeks 5 days 6 hours ago) and read 1941 times:

Quoting MadDogJT8D (Reply 5):
on a very foggy morning

For what it's worth, the day I saw it was also foggy. I remember seeing a Thai A-345 take off, turn towards the left, and then disappear into the clouds.

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