Originally Posted by
DH106
The -420 series also had the 'old' style single nosewheel door, a la 707-120 / 720, which always struck me as odd, considering it was supposed to be a re-engined development of the -320.
Yes the quirky things we all noted lol
All 707-120/138/220/320/420 >> Basically all
non-fan 707 and 720, and all fan jet 120B & 720B models had the old style single nose wheel door,
but with a few late build exceptions - some of the last 120B and 138B's and 441 types had the newer double NG doors.
Some early build 707-320B fan jets just had the single NG door and some also had a large ventral fin (removed later) -- these 707's were the first for PA NW TW LH SAA LY and AF.
There were also very early build 707-320C models and but I do not think the very first
ones had the single NG door.