I should post a few screenshots of what can happen with the POSKY 747-100SSA if you don't rotate at the right speed (i.e. rotating at speeds past ca. 190 KIAS)... The shots are in and around Edwards AFB.
Shot #1: Why won't my nose gear retract?! OMG!
Shot #2: Hmmm... the gear indicator tells me that the gear is "in transit", forever! (Look at the red square I drew on the EICAS.)
Shot #3: The result...
Fortunately, I made a very smooth landing and did not produce a crash, thus saving four lives and over 2 billion bucks!