LongHauler From Canada, joined Mar 2004, 4992 posts, RR: 42 Posted (7 years 3 months 3 weeks 3 days 14 hours ago) and read 3577 times:
I was recently involved in a discussion at a Union meeting, and the subject of ACARS "out" times arose, and no one could come up with a definite answer.
At my airline, the "out" time of the aircraft is sent to Operations via the ACARS, and it is determined by having both the parking brake released, and all doors closed. I assumed this was the case at all airlines, but the possibility was raised that the parameters the ACARS uses can be set by the airline.
Is this true?
Namely are there any other airlines around that use different parameters for establishing the "out" time? I seem to recall someone mentioning here that at his airline, the beacon being ON, set the out time.
I am curious to hear what other airlines use.
Never gonna grow up, never gonna slow down .... Barefoot Blue Jean Night
HPAEAA From United States of America, joined May 2006, 1024 posts, RR: 1
Reply 1, posted (7 years 3 months 3 weeks 3 days 14 hours ago) and read 3558 times:
I think US East requires a rotation of the fwd nose gear for the acars system to register the out time..... I know at AA, MQ and US West, it was simply the pax doors closed and the parking brake released.
N710PS From United States of America, joined Oct 2006, 1166 posts, RR: 3
Reply 4, posted (7 years 3 months 3 weeks 3 days 13 hours ago) and read 3483 times:
Out is door closed wheel movement equal to ten feet kicks ACARS in on PSA birds and as far as I know the same for mainliners I think. that give you your out times. We routinely get the ontime by rolling ten than set brakes and wait.
There is plenty of room for Gods animals, right next to the mashed potatoes!
Zvezda From Lithuania, joined Aug 2004, 10511 posts, RR: 64
Reply 7, posted (7 years 3 months 3 weeks 3 days ago) and read 3244 times:
Quoting N710PS (Reply 4): Out is door closed wheel movement equal to ten feet kicks ACARS in on PSA birds and as far as I know the same for mainliners I think. that give you your out times. We routinely get the ontime by rolling ten than set brakes and wait.
JayDub From , joined Dec 1969, posts, RR:
Reply 11, posted (7 years 3 months 3 weeks 2 days 21 hours ago) and read 3123 times:
Quoting Zvezda (Reply 9): No, consumers rely on the on-time departure statistics. Cheating them is defrauding your passengers.
Dude, we're talking minutes here. This happens in one form or another everyday on every ACARS-equipped aircraft...yet you, the BD Gold, LH Senator, SQ QPP4, UA MillionMiler frequent flyer that you are...never noticed until we said something about it here on A.net. Perhaps, then, it's not really that huge of an issue to the average passenger?
As ThePinnacleKid stated above, USDoT On-Time stats are based on A14. The airlines judge station performance by D0 (departure within zero minutes of scheduled time). When you're going to come up short on turn time, doing a short push for ACARS activation, then completing paperwork saves the station alot of grief from corporate on the ops conference call the following day...
A short roll is no different than airlines who have configured their ACARS "out" times as "doors closed/brakes released", and sitting in the gate for 5 minutes waiting for pushback with the parking brakes released and an "out" time registered.
Asuflyer05 From United States of America, joined Feb 2004, 2372 posts, RR: 3
Reply 14, posted (7 years 3 months 3 weeks 2 days 20 hours ago) and read 3052 times:
ACARS? What's that? You don't call in your times?
Quoting LongHauler (Thread starter): Namely are there any other airlines around that use different parameters for establishing the "out" time? I seem to recall someone mentioning here that at his airline, the beacon being ON, set the out time.
I want to say I heard a US West crew explain it had something to do with engine oil pressure in the #1 engine.
727Stretch From United States of America, joined Aug 2004, 65 posts, RR: 0
Reply 16, posted (7 years 3 months 3 weeks 2 days 18 hours ago) and read 2981 times:
When I worked at UA the pilots always said it was when the parking brake was released. Occasionally you'd have a pilot who'd want to start their time clock early and release the brakes while the jetbridge was still attached and rampers were still loading bags. It's quite a shock to be in the pit loading bags and feel the airplane roll a bit like that. Occasionally we'd have flights closed up so early with all pax and bags on, we'd push 'em back :15E or so, but ACARS would not register due to it being so early..LOL.
Apparently with DL, the OUT time is registered when the pilot flicks the rotating beacon on....This is what a buddy of mine who worked for DL says (and seems highly unlikely but appears to be true by verifying DL's OUT times with their Deltamatic system)...interesting. For anyone who works at airports, you can check this out - if you see a DL airplane sitting at the gate with jetbridge still up and bags still being loaded, but the rotating beacon on - go to delta.com and check the flight # if you know it. 9 times out of 10 it will show an out time.
Far from fraud, I make McDonalds money as it is. If ATC can't get their act together or the million other reasons I am getting my moolah. It is common pratice to push ten with the door closed to get the out time. You would be amazed at what some of the regionals that fly types without an ACARS can get away with when they call for times. It is in no way fraud because we have passengers on board and the bins are closed. When your waiting for the OF11E and you have one minute to go it is pretty normal pratice.
There is plenty of room for Gods animals, right next to the mashed potatoes!
SWA does have ACARs. At SWA the out time is when all doors are closed (to include the cargo doors) and the parking brake has been released. The in time is when the parking brake has been set and at least door has been opened.
AA787823 From , joined Dec 1969, posts, RR:
Reply 21, posted (7 years 3 months 3 weeks 2 days 11 hours ago) and read 2832 times:
Dont forget the Captain can always override ACARS and give you a different out time. If I new I had a delay I would always send a young attractive female with a short skirt to dispatch the airplane.....10 mins late...oops on time...
EIPremier From United States of America, joined Sep 2000, 1549 posts, RR: 1
Reply 22, posted (7 years 3 months 3 weeks 2 days 6 hours ago) and read 2767 times:
Anyone know how AS does its "out" times? I've noticed at SEA, even on days with good weather they will sometimes record 25 or 30 minute "taxi out" times. Yet any time I've flown out of SEA it seems like taxi out was less than 15 min.
LHRBlueSkies From United Kingdom, joined Jan 2007, 493 posts, RR: 2
Reply 23, posted (7 years 3 months 3 weeks 2 days 6 hours ago) and read 2758 times:
Obviously everyone uses ACARS differently, and for different reasons. Some for punctuality figures for movement messages, some for internal auditing, some for contacting crews - it's a great tool, easily manipulated.
As far as punctuality tables go, here many airlines work on departure times for 'wow-ing' the punters as well as arrival statistics - they are all bogus anyway, as the ACARS times are fiddled, times altered, and so on. Everyone lies!
flying is the safest form of transport - until humans get involved!
STJ From United States of America, joined Feb 2006, 195 posts, RR: 0
Reply 24, posted (7 years 3 months 3 weeks 2 days 1 hour ago) and read 2684 times:
At NW (and it's regionals) it is out/off (out = door/brake and off = rotation) and on/in (on = touchdown and in = brake/door) but as stated above it is the A14 (in time) that the DOT uses for on-time and that off course cannot be fudged if the plane is not even on the ground yet it is late. So if it is fudged (and yes we probably have all done or seen it done) on the out time, if the crew cannot make up the time in flight and the flight is late arriving then it is late.
: No such thing as a "taxi out" time. There is an out time and off time an on time and an in time. Normally there is padding alloted to block for taxi
: To be more correct, for those airlines that look at wheel rotation, it is main wheel rotation not nose wheel. Only the mains have antiskid transducers
: I meant the difference between the "departure time" and the wheels up time, which would be the out time and the off time. Obviously the plane is not
: How about CO's IAH operation. At least on the narrowbodies pushing from C, the will close up and push on time. Then hold at the end of ramp and finish
: Well you probably already know this, but the last minute bag while waiting to start a motor once in a while makes a happy customer rather than drive
: Thanks for all of your answers. True to form, this is the best place to hear it from the "Horse's Mouth".
: IAHFLYR..... just a random comment... but you guys are awesome! it's always a good feeling at the end of a four day on the last leg to finally get bac
: Bin door openings are also something that is measured and discussed on daily operational conference calls...it gets a great deal of attention.