In article . net,
"Steven P. McNicoll" writes:
I believe T-29s were all Convair 240s. I also believe the USAF acquired a
few Convair 440s that had been converted to Allison-engined 580s and
designated them VC-131D, but can't confirm.

There were a whole slew of Convair 240/340/440s in U.S. Service.
Here's the breakdown I've got:
46 Model 240-17 as T-29A (14 Nav Stations, unpressurized)
105 Model 240-27 as T-29B (10 Nav Stations, 4 Radar Nav,
pressurized)
119 Model 240-27 as T-29C
93 Model 240-52 as T-29D (K-System Bombardier trainer)
26 Model 240-53 as C-131A Medivac transports
36 Model 340-70 as C-131B Most were used as test platforms
2 Model 340-36 as YC-131C turboprop testbeds. Flown by the
1707th ATW at Kelly AFB, along with
a pair or turboprop C-97s, a pair
of turboprop C-121s, and a
turboprop C-124.
16 Model 340-67 as VC-131D Staff Transports
1 Model 340-68 as VC-131D (Ordered by Lufthansa)
16 Model 340-79 as C-131D
15 Model 440-72 as C-131E ECM trainers.

3 C-131Ds adn 1 C-131E were converted by Pacific Airmotive to
C-131Hs, which were basicaly Model 580s, with T56 turboprops.
They went to the USN in 1979.
Oh, yeah, I almost forget! One C-131B was converted to C-131H
standards, then further modified as the Total In-FLight
Simulator, flown by Calspan. Basically you could dial in a
set of stability definitions, and control laws, and ruin a
Test Pilot's day in a controlled manner.

--
Pete Stickney
A strong conviction that something must be done is the parent of many
bad measures. -- Daniel Webster