Anyone know why this is ?
I always prefered the way they look without.
It's far better to grasp the universe as it really is than to persist in delusion
Apaches weren't originally fitted with the Longbow radar, and the AH-64D will work in concert with other AH-64s.
Fight the FOCA
I've read books (see below) by British Apache pilots who flew in the Afghan theatre. As stated in those books British Apaches from AgustaWestland were re-engined and have slightly more power than the original US Apaches from Boeing. This allowed them to operate with full ammunition loads and Longbow radar in place in the high-altitude environment in Afghanistan. The Longbow radars were removed from US AH-64Ds to reduce weight and compensate for lack of power.
The books I mention are Apache and Hellfire by Ed Macy and Dressed to Kill by Charlotte Madison.
I've also found the following articles that refer to this.
Longbow Radar Key to British Apache Ops in Afghanistan http://goo.gl/lgccX
Wikipedia: Boeing AH-64 Apache http://en.wikipedia.org/wiki/Boeing_AH-64_Apache
Wikipedia: AgustaWestland Apache http://en.wikipedia.org/wiki/AgustaWestland_Apache
Good answer.......... Cheers mate.
It's far better to grasp the universe as it really is than to persist in delusion