Originally Posted by
captjns
Foreign 121 time? Explain please. One needs to meet The requirements of CFR 121.436 to to act as PIC under CFR 121 operations. There are expats with well over 10,000 PIC, returning to the US, but with less than 1,000 as SIC having to apply for a waiver from the FAA. There was a NPRM a couple of years ago to amend this particular FUBAR from the existing Reg.
As far as I know the rule still stands as written, ie aeronautical experience for upgrade can only be acquired under US rules (121/135).
No idea what the odds of a waiver are.