Darn, I missed it. Could you tell me the specific show title (I'm also away from a TV guide at the moment but DSC.com doesn't show anything under A-5 or Vigilante... )
IIRC, the biggest problem the poor beastie had was actually centerred around that very nuke and the way they had to shuttle systems around it.
The pararetard system didn't work and the plethora of new-neato other goodies (HUD, LLTV, auto-TFR, just in the nose) made it a notorious deck-sitter.
According to one of my acquaintances who can't mention the name without spitting in the same breath, it also /leaked/. Like a Saudi oil well after an Iraqi frat party.
He says it's a good thing they only had like 5 in the RHA detachments or the poor wrench monkeys would have gone nuts cannibal-carting bits and pieces from one airframe to the next trying to keep them up and running.
IMO, if they'd given it a few more models to develop and ripped out the nuclear innards for just plain more /gas/ it would have been a superior A-6 equivalent (F-111 like) for taking into the 80's as a deep attack asset.
Of course I'm prejudiced, the hunchbacks aren't nearly as purdy as the original mushroom makers either...;-)
But imagine an F100 in each hole and about 30-35,000lbs of gofar onboard to speedster them with. Honest officer, I didn't know it was a 550 knot range, really?, 800 knots and off the clock? Must need a new radargun there, nudge, nudge, how 'bout a donut with sprinkles and we forget it ever happened eh... )