The last two updates at Prime Portal have been aviation related:
A 76 photo walk around of the AH-1F Cobra
A 22 photo walk around of the Ch-21B Shawnee
A 4 photo walk around of the HH-2D Seasprite
A 15 photo walk around of the HH-3 Sea king
A 5 photo walk around of the HH-52 Sea Guardian
A 175 photo walk around of the MH-6E Little Bird
An 18 photo walk around of the OH-13 Sioux
A 24 photo walk around of the TH-1L Iroquois
A 21 photo walk around of the Bristol 171 Sycamore Mk.52
And even though it is not purely a helicopter, 58 photo walk around of the V-22 Osprey Prototype
Check them all out at:
http://www.primeportal.net/whats_new.htm
Enjoy!
Don Busack