Sponsor Message:
Aviation Technical / Operations Forum
My Starred Topics | Profile | New Topic | Forum Index | Help | Search 
Engine Start Up At Gate  
User currently offlineAT From United States of America, joined Jul 2000, 1050 posts, RR: 0
Posted (4 years 10 months 1 day ago) and read 4134 times:

I've been on a couple of international fights recently (777 and A330) where engine start up has been initiated while we are still at the gate before pushback. Is this something new? I always use to recall being pushed back by the tug and then gradually the engines would be started (the occasional DC9 reverse thrust push back excepted).

I noticed this most recently at both JFK and DXB. Does the distance of the aircraft from the actual terminal have anything to do in determining this?

9 replies: All unread, jump to last
 
User currently offlineMPDPilot From United States of America, joined Jul 2006, 998 posts, RR: 0
Reply 1, posted (4 years 10 months 1 day ago) and read 4113 times:



Quoting AT (Thread starter):
I noticed this most recently at both JFK and DXB. Does the distance of the aircraft from the actual terminal have anything to do in determining this?

A lot of this can have to do with the operations of the airport. At LAX for example they have start up points for aircraft parked a Tom Bradley.

Sometimes I can imagine if they are trying to get the aircraft out of the gate and then out of an alley they might start up sooner to minimize the time the aircraft is not moving.

Perhaps someone can speak to JFK and DXB.



One mile of highway gets you one mile, one mile of runway gets you anywhere.
User currently offlineMir From United States of America, joined Jan 2004, 21801 posts, RR: 55
Reply 2, posted (4 years 10 months 1 day ago) and read 4100 times:

The most common reason to do that is an inoperative APU requiring an air cart to start, but ETOPS on a twin requires an operative APU, so if you were doing any oceanic flying I would doubt that that's why they did it. I can't think of anything else that would mandate starting at the gate, but there's nothing wrong with doing it like that if you don't mind burning the extra fuel.

-Mir



7 billion, one nation, imagination...it's a beautiful day
User currently offlineRscaife1682 From United States of America, joined Feb 2008, 332 posts, RR: 0
Reply 3, posted (4 years 10 months 1 day ago) and read 4086 times:

They might have been an air start as the a/c had no GPU???????


RYAN
FLTOPS


User currently offline777fan From United States of America, joined Jan 2006, 2520 posts, RR: 2
Reply 4, posted (4 years 10 months 1 day ago) and read 4038 times:

I have some childhood memories of Midway Airlines' DC-9s starting up at the gate, initiating reversers, and pushing themselves back for taxi (pre-MDW renovation, naturally).


777fan



DC-8 61/63/71 DC-9-30/50 MD-80/82/83 DC-10-10/30 MD-11 717 721/2 732/3/4/5/G/8/9 741/2/4 752 762/3 777 A306/319/20/33 AT
User currently offlineHAL From United States of America, joined Jan 2002, 2568 posts, RR: 53
Reply 5, posted (4 years 10 months 23 hours ago) and read 3871 times:

You can still go ETOPS with the pneumatic portion of the APU inop, as long as the electrical functions are OK. Usually it's a valve problem that prevents the APU from being used for air. The APU is still there as a backup generator though, which is the primary reason to have the APU for ETOPS. I have flown several trips over the years where we had to use the ground cart for start, but were good to go for a trans-Pacific flight.

HAL



One smooth landing is skill. Two in a row is luck. Three in a row and someone is lying.
User currently offlineADXMatt From United States of America, joined Jul 2006, 954 posts, RR: 1
Reply 6, posted (4 years 10 months 22 hours ago) and read 3758 times:



Quoting Mir (Reply 2):
The most common reason to do that is an inoperative APU requiring an air cart to start, but ETOPS on a twin requires an operative APU,

The APU is not required for ETOPS on all A/C types.

B757 reduces ETOPS to 120 with APU inop
B777 no Polar ops with APU inop.

Most likely needed an airstart.


User currently offlineHAWK21M From India, joined Jan 2001, 31702 posts, RR: 56
Reply 7, posted (4 years 10 months 17 hours ago) and read 3472 times:

If there is adequate clearence around the gate/bay & in case APU INOP.The start can be initiated on the gate/bay itself.
regds
MEL.



Think of the brighter side!
User currently offlineDrfix2fly From United States of America, joined Oct 2009, 28 posts, RR: 0
Reply 8, posted (4 years 10 months 15 hours ago) and read 3445 times:



Quoting Mir (Reply 2):
The most common reason to do that is an inoperative APU requiring an air cart to start, but ETOPS on a twin requires an operative APU, so if you were doing any oceanic flying I would doubt that that's why they did it. I can't think of anything else that would mandate starting at the gate, but there's nothing wrong with doing it like that if you don't mind burning the extra fuel.

-Mir

Depends on the Aircraft but most ETOPS aircraft I have worked the APU can be inop but the aircraft is limited to under 120 ETOPS


User currently offlineA333TS From Canada, joined May 2008, 160 posts, RR: 0
Reply 9, posted (4 years 9 months 4 weeks 1 day 10 hours ago) and read 3142 times:

Would it be possible that the due to busy time at JFK, tower did not want to create traffic on the tarmac and thus requested the pilot to start the engines at the gate? That way the plane can be on the way as soon as the tag is clear?
Just a thought, would be nice to hear from the pilot or tower operators if that is possible or has been done before?


A333TS


Top Of Page
Forum Index

Reply To This Topic Engine Start Up At Gate
Username:
No username? Sign up now!
Password: 


Forgot Password? Be reminded.
Remember me on this computer (uses cookies)
  • Tech/Ops related posts only!
  • Not Tech/Ops related? Use the other forums
  • No adverts of any kind. This includes web pages.
  • No hostile language or criticizing of others.
  • Do not post copyright protected material.
  • Use relevant and describing topics.
  • Check if your post already been discussed.
  • Check your spelling!
  • DETAILED RULES
Add Images Add SmiliesPosting Help

Please check your spelling (press "Check Spelling" above)


Similar topics:More similar topics...
WHOOP-WHOOP Sound On Engine Start UP posted Tue Nov 22 2005 14:53:56 by THVGJP
Engine Start Up Noise posted Sun May 1 2005 16:04:28 by Sul
Why Different Engine Start-up Sequences? posted Thu Jun 17 2004 18:00:44 by Thrust
747 Correct Engine Start-Up Order posted Sat Mar 13 2004 00:43:00 by Cmckeithen
AE EMB 135/140/145 Engine Start Up posted Tue Dec 30 2003 16:46:50 by Flyingbronco05
Wind And A Jet Engine Start Up? posted Wed Apr 2 2003 15:37:06 by Atcboy73
Engine Start-up? posted Sun Apr 22 2001 03:07:32 by Bryan Becker
Engine Start-up posted Thu Nov 16 2000 04:09:40 by Turboprop
747-400 Engine Start Up posted Sat May 27 2000 12:44:48 by Future_747_f/o
Exhaust Gas Speed At Start-up posted Sat Aug 19 2006 00:25:26 by Hugh3306

Sponsor Message:
Printer friendly format