I've been receiving a "invalid entry" message when trying to enter the zero weight value and the runway number... basically operations with number on PIC's FMC. What is wrong? Manual says nothing about it so i guess there must be some problem with me? lol I'm trying it in flight from Amsterdam Schipol to Manchester with a POSKY 767. I try to dial in the runway 6 and i get the "invalid entry" message and the same thing happens to zero weight... i type 245, which is 245000 pounds and i receive the same message.Thanks

Ok i just found out that it was a metric unit problem with my FS2002. Just went back to the US system... grrrr I rather use the metric system, much simpler...anyway, the Runway number problem continues...

You need to enter the runway as 06 not 6.

I have no problems using the metric system. (Go Metric! ;-))245,000 lbs is entered as 111.1 tonnes using the metric system.Martin767 fetishistIt's a lot like life and that's what's appealing

Also, if your ZFW + fuel & cargo is computed to be above max gross you get an invalid entry message.