KELPkid From United States of America, joined Nov 2005, 6428 posts, RR: 3 Posted (9 years 2 weeks 6 days 11 hours ago) and read 2910 times:
Just wondering how WN comes up with tail numbers for new birds.
For some series (e.g. factory-new 737-3H4's), the scheme is obvious: N3**SW (provided, of course N3**SW was available...I do know, from my days as a GA lineboy, that any N-number ending in 'SW' is quite popular for a custom tail number! Don't know why...). Same goes for the 500 series 737's: N5**SW. 700 series: N7**SW. Then you get into the newest of the new birds and second-hand acquisitions-it starts getting strange...
N750SA? I'm taking it that SW was probably taken...maybe N750WN was taken as well.
Probably the strangest of them all (to me, anyways...) N674AA. Wonder why AA didn't raise an objection on that one (and yes, I do know that the FAA registry is first-come, first serve, except for all-numeric N-numbers less than 4 digits, reserved for FAA birds)
Be curious if anyone knows the answer...
Celebrating the birth of KELPkidJR on August 5, 2009 :-)
AA737-823 From United States of America, joined Mar 2000, 5913 posts, RR: 11
Reply 1, posted (9 years 2 weeks 6 days 11 hours ago) and read 2888 times:
Because AA sold them the aircraft.
Airlines are not obligated to reregister an airplane when it changed ownership, unless the new owner is based in a different country.
Further, the numbers Southwest uses DO make sense, if you this about it for a little while. The -700s were N7XXab. Then, they ran out of 700 number, so they went for N400ab. 7x2=14, that's my best guess as to where the 4 came from. Ah, but now they've run out of 400 numbers too, so they've gone to N2XXab. Good luck figuring that one out.
In the past, they have kept this sort of doubling nomenclature. The first 100 -300s had N3XXab, and then they doubled the 3 to get N6XXab.
OPNLguy From , joined Dec 1969, posts, RR:
Reply 2, posted (9 years 2 weeks 6 days 10 hours ago) and read 2866 times:
In the beginning, the standard registration suffix SWA desired was "SW", but lo, there came a day when the "SW" suffix was not available for a particular number. The back-up plan was "WN", using Southwest's two-letter airline code. Though rare, sometimes both "SW" and "WN" were not available for a particular number, and "SA" (Southwest Airlines) was used.
There are some exceptions to the above general rule(s):
"AA" These -300s were formerly operated by AA (AA inherited them from the AirCal merger), and the aircraft lessor didn't want the registration numbers on our several "AA" aircraft changed. Some lessors will, some, won't. As another example, we picked-up 3 737-200s from Midway Airlines (v1.0), and they were N702ML, N721ML, and N722ML. The lessor for N702ML said "nyet" to the change, while the a different lessor for N721ML and N722ML said OK, and those two aircraft became N721WN and N722WN.
We have several single-use suffixes that are named after company officiers, such as "HK" for Herb, "CB" for Colleen, "JW" for Jim Wimberly, "GB" for Gary Barron, and "RR" for Ron Ricks. For maintenance, we also have "QC" for quality control, and "WR" and "JC" to honor a couple of PHX mechanics who died in a light airplane crash.
0-130, 702, 721, 722: Used to be used by the -200s, all retired. The 702, 721, and 722 numbers won't be re-used for the -700s.
The -300s started with (naturally) N300SW, and when we ran out of those, we used 600-series numbers.
The -500s run from 500-528, although there are only 25 in the fleet, i.e. a couple of numbers were skipped.
The -700s started (and filled-up) the 700-series, as did the 400-series, and we're up to N224WN (the just-delivered "Slam Dunk One) in the 200-series.
We also have numbers reserved in the 800-series and 900-series. After that, my guess is that we'd go to the 100-series, and then the 300-series and 500-series once those aircraft started retiring. N300SW is 21 years old now, so my guess is we'll start seeing those retire in 2006 or 2007.
Visityyj From Canada, joined Jun 2000, 519 posts, RR: 0
Reply 3, posted (9 years 2 weeks 6 days 10 hours ago) and read 2782 times:
Quoting OPNLguy (Reply 2): We have several single-use suffixes that are named after company officiers, such as "HK" for Herb, "CB" for Colleen, "JW" for Jim Wimberly, "GB" for Gary Barron, and "RR" for Ron Ricks. For maintenance, we also have "QC" for quality control, and "WR" and "JC" to honor a couple of PHX mechanics who died in a light airplane crash.
SCXmechanic From United States of America, joined Dec 1999, 534 posts, RR: 1
Reply 6, posted (9 years 2 weeks 6 days 6 hours ago) and read 2645 times:
Have you heard anything about the -300's being re-skined and operated for several more years? Some guys came back from DAL and said thats what was coming from Jim Sokel who stopped by one of the classes.
Also, any word on Autothrottle and Autobrake being activated?
I heard a while back that we were gonna start using Autobrake in other modes besides the RTO function.