B767 offset in china

[ILScat3c]

How can offset be accomplish during SID/STAR phase of flight?

[back to Boeing]

How can offset be accomplish during SID/STAR phase of flight?
As far as I have ever experienced the offset is only done on the enroute phase of the flight.

[rudestuff]

How can offset be accomplish during SID/STAR phase of flight?
it can't. The offset automatically ends when the approach begins. It makes sense if you think about it - a STAR is specifically designed to keep you safe - if you start adding offsets to them you'd see a lot of people hitting mountains.

[Check Airman]

Additionally, RNP for procedures is 1nm, so you wouldn’t be able to offset very far anyway.

[parishiltons]

How can offset be accomplish during SID/STAR phase of flight?
Why would you want to do that?

[wrxpilot]

This actually happens somewhat often out of PVG and I’ve also had it happen in PEK. You are correct that the FMC will not let you offset when you’re on a SID/STAR. However, there is a simple way around it:

Just select the fix you’re headed TO and drop it back into the TO position, then Execute. You haven’t affected your navigation/SID, but the FMC thinks you’ve now gone “direct” and are no longer on the SID.

You can now go to the RTE page and offset as usual.

[Check Airman]

Interesting. I’m curious as to why they’d want you to do that instead of just using vectors or creating another SID.

[wrxpilot]

Interesting. I’m curious as to why they’d want you to do that instead of just using vectors or creating another SID.

Who knows. It’s China, so I just don’t even attempt to understand the why.

[oceancrosser]

Additionally, RNP for procedures is 1nm, so you wouldn’t be able to offset very far anyway.

Oh it can be pretty different in China…

[Check Airman]

Never flown in China. How much are you requested to offset?

[STBYRUD]

Enroute sometimes 3, sometimes 5 miles... They seem to think of their (sparse) airways as multilane highways, its odd..

[back to Boeing]

Enroute sometimes 3, sometimes 5 miles... They seem to think of their (sparse) airways as multilane highways, its odd..
I’ve had 15. 3 is the norm. But when you ask for an offset for either “unable due restriction”. It’s the one and only place I’ve declared a mayday as we were deviating restriction or not. Wasn’t even acknowledged.

[STBYRUD]

That's a classic, don't remember if i requested an offset or a heading due to a CB on the airway, but of course the answer was "unable due military area", to which I replied unable to proceed on route :} ... "Deviation approved":E

[awair]

After being denied a lateral offset, normally an equivalent heading request would be immediately granted…

… amounting to substantial track shortening and probably equal to 20NM!