wouldn't 150% account for gusts?
That's for landing & performance distance calculations. I am looking for legal operational limits regarding gusts. They are there for head & X-winds, but not tail. There are only steady tailwind limits. e.g. RW36. ILS: Wx below limits for circle RW18. W/V 180/14G28. Heavy rain & turbulence. RW36 has 15kt allowance & is extra long. I diverted, others from company landed within 15 mins afterwards. Asked company for guidance on calculating tailwind limits. No answer, save from performance dept.