Boeing FMC MINVR (minimum rotation speed)

[RandomPerson8008]

Can anyone explain the reason for an FMC generated MINVR value following automatic uplink of performance data via ACARS?

I can speculate that it is VMC related - potentially VMCA protection, but I'm having trouble finding an explanation.

Apologies for the blurry photo, but leaning forward from behind the center pedestal to snap was a bit awkward.

Thanks.

https://cimg7.ibsrv.net/gimg/pprune.org-vbulletin/756x1008/20200430_062633_b9d598f70260d17e9e70780e5b751ca243e2f806.jpg



https://cimg1.ibsrv.net/gimg/pprune.org-vbulletin/756x1008/20200430_062646_e1b1bade074e453e5af146c312dc0580d40847ce.jpg

[turbidus]

tailstrike protection?

[RandomPerson8008]

tailstrike protection?

Could be. I'm wondering why the aerodata performance vendor didn't account for the minimum Vr in their numbers. The aircraft FMC overrode the vendor data, adding 4 knots to Vr.