- Tue Jun 20, 2017 5:05 pm
EDIT: I didn't see Josh's reply until I finished typing this rambling monstrosity and hit submit. Figured I'd throw caution to the wind and re-submit it anyway... I'm sure Josh can and will provide any necessary corrections.
Johannes Smit 1395377 wrote:According to me the restrictions are fly FL010 at BOLDR but the recommended altitude is 6000
Couple of things:
- Throughout the US, altitudes below FL180 are no longer described as "flight levels". "FL180" means 18,000 ft. using a standard altimeter setting (29.92 inHg), whereas "10000" means 10,000 ft. using the local altimeter setting. So, the restriction is 10,000 ft., not "FL010".
- Where did you get the term "recommended altitude" ? Between SKUNK and BOLDR (as well as between BOLDR and MENLO), 6000 is the minimum enroute altitude. It's not "recommended" to fly all the way down there; in fact, quite the opposite.
The MEA is used to ensure you don't lose signal from any necessary navaids (a.k.a. MRA - minimum reception altitude) and that you don't run into an obstruction such as land (a.k.a. MOCA - minimum obstruction clearance altitude). Think of it as a "if I'm deviating from my clearance and in a dive for some weird reason, here's the altitude where I really need to start getting nervous."
Johannes Smit 1395377 wrote:Can someone maybe give me a complete walkthrough of the approach descending from FL230 and using the MENLO transition to land at runway 28L
Again a bit of nitpicking: there is no "MENLO transition" on the BSR3 STAR. In fact, that STAR has no transitions at all; the procedure begins at BSR and ends once you've become established on the 330 heading departing MENLO (presumably waiting for vectors to final from an APP controller who is busy and/or forgot about you if you got that far).
For a contrasting example, the BDGEA2
STAR has 5 transitions. So, that procedure either begins at the common fix, LOZIT (noted in the top left and bottom left corners of the chart as well as the "common instructions" at the bottom starting from that fix), or it begins at the start of one of the five possible transition legs.
Having said all of that... actually flying the BSR3 arrival with ATC
is easy. Here's the complete walkthrough:
- Follow ATC instructions/clearances.
I cheated because you picked an easy example. The BSR2 has zero
altitude or speed restrictions
. It has expectations
, sure, but no restrictions. Thus, ATC can't simply say something like "descend via the Big Sur Three arrival" and expect you to formulate an elaborate vertical profile to follow.
Instead, you'll get manually-assigned step-down altitudes as you descend from cruise into the terminal area. Oakland's CTR<->NorCal LOA suggests that Center issues a "descend and maintain FL200" and hands you off to NorCal for further descents and sequencing.
If you're asking what to do without
ATC... I don't know what to suggest. Find some way to make up your own sequencing with the traffic around you (with the added challenges of not having a radar scope and
not being able to issue control instructions to anyone but yourself) and fly whatever path (laterally and vertically) is most efficient and safe for you.