|Quoting AADC10 (Reply 59):|
UA of course was even more closely tied to Boeing having been divested in an anti-trust breakup. PMUA still had a preference for its former owner as well as other Boeing spin offs like P&W. When it had to, UA would go to DC-3s, DC-8s, DC-10s and A320s because they were the best aircraft available at the time for their mission.
United was a Douglas customer after over committing to the B-247 and not receiving DC-3's until a year after AA
had them in service. But after that, United was Douglas's best customer. The DC-4 was developed at their behest, and the first prototype was only flown by UA
. United purchased more DC-6/DC-6B/DC-6A than any other carrier and introduced the DC-6 with AA
. While the DC-7 was developed per an AA
bought 57 copies. United did not order any Boeing 307's, and only a handful or so of B-377's for their Hawaii routes, and then when the DC-7 came along, dumped the Stratocruiser for the DC-7. I don't think UA
ever seriously considered the B-707 but went with Douglas, a firm that had been successful with airliners where Boeing had not been. Then after the 707 was widened, and die was cast, UA
did order the 720, but only after flirting with if not actually ordering the CV
-880, when Boeing promised earlier delivery dates, and because of engine commonality with the DC-8. Once Pat Patterson retired, then the Douglas relationship was not as close, hence UA
waiting for the 737-200 rather than purchasing DC-9's, probably not the greatest decision they ever made, as they sold off more than half their 737-222 fleet in the first ten years of ownership. No aircraft like the 727 was offered by Douglas and UA
were the launch carriers for the three holer. When it came to the trijet jumbo, UA
went with MDD as they had no relationship or history with Lockheed except for a few L-18 Lodestars that they flew in the 40's and were dissatisfied with.
purchased the A-320, they got a great price on the purchase, and Boeing did not really have a competitive aircraft.