Anonymous ID: ef6421 Feb. 9, 2018, 9:32 p.m. No.323020   🗄️.is 🔗kun   >>3031

Weather in Hanoi at Noi Bai (VVNB) - foggy for last 4.5 hrs. See graphic. "LIFR"

 

  1. Low Instrument Flight Rules (LIFR): Ceilings are less than 500 feet and/or visibility is less than 1 mile.

 

LIFR = <500′ and/or <1 mile

 

In other words, even experienced IFR pilots may have a hard time. With these conditions, they will break out just above the standard minimums for an ILS approach (200-1/2)