Originally Posted by Mark1234
Seriously, the inherent inaccuracy in the measuring system (instrument), and static vents is going to be a lot more than 6.75 ft.... I've not seen an altimeter where you can accurately set .2 hpa either.
- 'tis indeed pedantry, but the question was asked in post#1 and Flight levels ARE defined on 1013.25MB/29.921".
Many airlines, BA included, refer to "1013" as 'Standard" (presumably to reduce printing costs
) but Boeing and Airbus at least view it as 1013.2mb/29.92 in the 'auto' setting. The point being, if you are going to set it, set it properly! For Alf, the act of confirming both '1013 and a bit'/29.92 on the subscale goes along way to eliminating the error.
I have yet to see it mis-set in 45 years+.