Really doesn't tell us much. Both flights used the FRIHO4 arrival, they just flew different airways to get there...
The dispatcher, of course, could have optimized the routes for each flights based on the winds aloft at the differing cruise altitudes (which is what I suspect transpired here...). ATC, between busy terminals, has what's called "preferred" routings. I don't think that DEN-ABQ is busy enough to justify a preferred routing, but the other way (ABQ-DEN) might be...
Celebrating the birth of KELPkidJR on August 5, 2009 :-)
Falcon flyer From United States of America, joined Jul 2000, 1348 posts, RR: 0
Reply 7, posted (8 years 3 weeks 4 days 5 hours ago) and read 2589 times:
It may have just been coincidental. It's not necessarily to differentiate between jets and turboprops unless it involved a sequencing conflict due to speed on arrival into ABQ and even then it's unlikely that ATC would have sent the Dash all the way to Fort Union as opposed to some vectoring for seqeunce. In addition to being fixes on the arrival, ESPAN, FLYBY and FRIHO are all fixes on J13 between Alamosa and ABQ so it could be filed any number of ways There's nothing on the PIKES departure from DEN differentiating the ALS and PUB transition between props and jets either, both transtions are applicable to both aircraft as is the friho arrival. Ops may have filed the flight plan over PUB and FTI for any number of reasons such as weather or PIREPS for turbulence at the lower altitude for the Dash 8.
My definition of cool ? Not trying so hard to be cool.
Jkudall From United States of America, joined Mar 2004, 615 posts, RR: 1
Reply 8, posted (8 years 3 weeks 4 days 5 hours ago) and read 2582 times:
There could be a number of reasons for the different routes. The minimum altitudes to fly on the more direct route (the route the southwest flights usually take) are higher than the other routing Lynx takes, but the Lynx flights still cruise well above any terrain (they filed for 25,000). It could just be their preffered way of getting there. Maybe they generally get less turbulence or more favorable winds taking that route at the altitude they fly. It really could be a number of reasons.
TheGreatChecko From United States of America, joined Mar 2004, 1139 posts, RR: 3
Reply 10, posted (8 years 2 weeks 6 days 20 hours ago) and read 2342 times:
The dogleg has to do with terrain clearance in the event of a cabin depressurization. The Q400 has a max altitude of 25,000 feet and has to demonstrate that it can reach 14,000 feet within 4 minutes (due to no O2 masks for the pax).
Apparently there is a peak south of Pueblo that requires the routing.
"A pilot's plane she is. She will love you if you deserve it, and try to kill you if you don't...She is the Mighty Q400"