View Full Version : FMC speed constraint at LPA airspace
KristianNorway
15th Sep 2009, 20:30
Dear colleagues
Can anyone tell me why our FMC has a speed restriction of 250 kts below FL150 on climb out from LPA? I fly a B738 with FMC update 10.7.
There are theories of the same speed restriction following the area from the arrival segment.
Is this because of a given airspace classification?
Thanks :ok:
akindofmagic
15th Sep 2009, 21:17
On at least one of the arrival procedures for LPA, there is a stated requirement to be at or below 250kts below FL150, beyond the SLPs.
Even though I couldn't find it stated on a plate, I have a dim memory of there being the same restriction on one of the RNAV departures.
KristianNorway
15th Sep 2009, 21:33
Sure?
I haven't seen it on any departure, but I may be mistaken of course.
At least I don't think there is any published speed constraint on the departures.
singpilot
15th Sep 2009, 22:14
I remember asking this once and being told that it keeps the departing guys 'sequenced' with the arriving guys until everyone has vertically separated.
KristianNorway
17th Sep 2009, 22:12
Hm.. but I can't see it stated anywhere. All tips are welcome :)
Hey Kristian,
have a look at RAR (Rules and regulations general) of Spain. Either in Jeppesen or EAG or whatever Chart-supplier you use.
Tomi
Too Few Stripes
18th Sep 2009, 10:37
Check the AIP, it's not there. It's only a requirement for arrivals (hence stated on the plates). For some reason the FMC Nav guys seem to always program it for departures as well.
Rgrds.
Bearcat
18th Sep 2009, 11:32
on a day to day basis, speed restrictions at FL150 rarely are imposed.