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Rwy 33L Vs 27 At BOS  
User currently offlineBizJet From United States of America, joined Nov 1999, 275 posts, RR: 0
Posted (4 years 3 months 3 weeks 5 days 13 hours ago) and read 1912 times:

I was listening to BOS Ground ATC this morning and was surprised to hear AWE1969 (an A319 BOS-SJU) decline the departure runway 27 and request 33L instead. All of the other traffic has been using Rwy 27.

Any idea why this flight had to use 33L instead of 27? I realize 33L is longer, but it would seem like 27 would certainly be sufficient for this A319. And no other aircraft that I heard had an issue with 27.

6 replies: All unread, jump to last
 
User currently offlineReggaebird From Jamaica, joined Nov 1999, 1174 posts, RR: 0
Reply 1, posted (4 years 3 months 3 weeks 5 days 13 hours ago) and read 1903 times:

This is interesting as I didn't think that planes took off on 27 anymore. Are you sure they weren't landing? That would make sense.

User currently offlineReggaebird From Jamaica, joined Nov 1999, 1174 posts, RR: 0
Reply 2, posted (4 years 3 months 3 weeks 5 days 13 hours ago) and read 1894 times:

I just checked the ATC site and you are correct. They are indeed departing on 27. I haven't seen this in years!!!!

User currently offlineDvincent From United States of America, joined Jan 2007, 1736 posts, RR: 11
Reply 3, posted (4 years 3 months 3 weeks 5 days 12 hours ago) and read 1863 times:
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Quoting Reggaebird (Reply 2):
I just checked the ATC site and you are correct. They are indeed departing on 27. I haven't seen this in years!!!!

Rwy 27 departures aren't that uncommon. There's situations where you have both 33L and 27 in use and depending upon noise abatement/winds/other reasons 27 will do departures while 33L will do arrivals, and vice-versa.



From the Mind of Minolta
User currently offlineBrilondon From Canada, joined Aug 2005, 4058 posts, RR: 1
Reply 4, posted (4 years 3 months 3 weeks 5 days 12 hours ago) and read 1848 times:



Quoting Dvincent (Reply 3):
Rwy 27 departures aren't that uncommon. There's situations where you have both 33L and 27 in use and depending upon noise abatement/winds/other reasons 27 will do departures while 33L will do arrivals, and vice-versa.

Does it have anything to do with the weather that BOS was experiencing and the need to check the runway for debris or just a routine hourly check?



Rush for ever; Yankees all the way!!
User currently offlineDeltAirlines From United States of America, joined May 1999, 8868 posts, RR: 12
Reply 5, posted (4 years 3 months 3 weeks 5 days 11 hours ago) and read 1766 times:



Quoting Brilondon (Reply 4):

Does it have anything to do with the weather that BOS was experiencing and the need to check the runway for debris or just a routine hourly check?

Weather here in BOS has been clear all morning - no precipatation overnight, light winds out of the northwest.

It's a possibility that the A319 wanted a little more runway due to the storm systems over the entire middle of the country - they might have loaded up with a bit more fuel and felt more comfortable having a little more runway than the 7000' ft 27.


User currently offlineApodino From United States of America, joined Apr 2005, 4124 posts, RR: 6
Reply 6, posted (4 years 3 months 3 weeks 5 days 10 hours ago) and read 1720 times:

About the 33L 27 deal. In a northwest wind, the configuration is determined by the airport demand, because from a noise abatement standpoint, the airport prefers to land 33L and depart 27. However, if there is enough demand to warrant the use of Runway 32, the airport will switch to a depart 33L land 27 configuration due to the approach paths of 33L and 32 crossing. So during the mornings when there is less demand, you will see depart 27 land 33L, but in the afternoon and evening when the arrival demand picks up, they will switch to a land 27 and 32 depart 33L configuration.

As for the USAirways flight, 27 is sufficient for many flights for an A319, that being said however, a flight like SJU would require more fuel than most of the A319 flights, and its possible that amount of fuel would make the A319 too heavy to safely depart from 27, in which case a longer runway would be needed. This happens all the time in BOS, especially with flights to Europe and the West Coast, because usually in BOS, the primary departure runway is shorter than other runways. In an East Config, the primary departure runway is 9, but its only 7000 feet, so you will often see planes use 4R for departure as its longer, but it takes a little longer to get out as the primary arrival runway. And in a Southwest Config, planes will often take 22L instead of 22R for the same reason. I have planned flights on a hot day, where even the CRJ has to use runway 22L, because 22R has an obstacle that is used for planning purposes, which limits the weight even more than it already is as a 7800 foot runway.


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