Big Red L,
You seem to have recieved quite fierce opinions on your original question, and I am a bit surprised, times have changed. I entered civil aviation from military aviation in the late seventies, and quite a high proportion of engineers and flight crew were ex mob, tattoos were quite common place and certainly did not result in some of the reactions expressed above.
Getting a tattoo was really a rite of passage for young servicemen, most regretted it later of course, however it now is associated with the yob culture introduced by Mr Blair.
Removal is simple, private laser clinics will easily remove a simple tattoo, it may require several visits, be expensive and rather uncomfortable, but will leave no scars, unlike the skin grafts that used to be seen.
If you want a serious career in aviation get on to google for a clinic and book your slot.
Good luck,
om15