| [Photo-ID: 10129] © Karsten Palt 2014-05-28 |
 | Bell
X-1
United States Air Force (USAF)
Reg.: 46-0062
c/n: 1
Glamorous Glennis |
| National Air and Space Museum [Washington, DC, USA] |
| [Photo-ID: 10170] © Karsten Palt 2014-05-28 |
 | North American
X-15A-1
United States Air Force (USAF)
Reg.: 56-6670
c/n: 240-1
first of three built X-15, the X-15 holds the world's record of highest speed ever reached by a manned aircraft |
| National Air and Space Museum [Washington, DC, USA] |
| [Photo-ID: 10171] © Karsten Palt 2014-05-28 |
 | North American
X-15A-1
United States Air Force (USAF)
Reg.: 56-6670
c/n: 240-1
first of three built X-15, the X-15 holds the world's record of highest speed ever reached by a manned aircraft |
| National Air and Space Museum [Washington, DC, USA] |
| [Photo-ID: 3181] © Karsten Palt 2010-01-31 |
 | Rockwell-MBB
X-31 Vector
US Navy / BWB
Reg.: 164585 / SD-031
c/n: 2
|
| Flugwerft Schleißheim [Oberschleißheim (EDNX), Germany] |
| [Photo-ID: 3182] © Karsten Palt 2010-01-31 |
 | Rockwell-MBB
X-31 Vector
US Navy / BWB
Reg.: 164585 / SD-031
c/n: 2
|
| Flugwerft Schleißheim [Oberschleißheim (EDNX), Germany] |
| [Photo-ID: 10286] © Karsten Palt 2014-05-28 |
 | Hiller
XH-44 Hiller-Copter
Reg.: NX30033
|
| NASM Udvar Hazy Center [Chantilly, VA, USA] |
| [Photo-ID: 11120] © Karsten Palt 2015-06-03 |
 | McCulloch
XHUM-1
United States Navy
Reg.: 133817
c/n: 1001
ex N4072K |
| Pima Air and Space Museum [Tucson, AZ, USA] |
| [Photo-ID: 10952] © Karsten Palt 2015-06-03 |
 | Columbia
XJL-1
Reg.: N54205
one of 3 built |
| Pima Air and Space Museum [Tucson, AZ, USA] |
| [Photo-ID: 10220] © Karsten Palt 2014-05-28 |
 | Bell Helicopter
XV-15
NASA
Reg.: N703NA
c/n: 0002
one of two builtexperimental tilt-rotor VTOL aircraft, built in 1977 |
| NASM Udvar Hazy Center [Chantilly, VA, USA] |
| [Photo-ID: 10221] © Karsten Palt 2014-05-28 |
 | Bell Helicopter
XV-15
NASA
Reg.: N703NA
c/n: 0002
one of two builtexperimental tilt-rotor VTOL aircraft, built in 1977 |
| NASM Udvar Hazy Center [Chantilly, VA, USA] |
| [Photo-ID: 1171] © Karsten Palt 2008-07-16 |
 | Bleriot
XXVII
Reg.: 433
|
| Royal Air Force Museum [London-Hendon, United Kingdom] |
| [Photo-ID: 11341] © Karsten Palt 2015-06-04 |
 | Northrop
YA-9A
United States Air Force (USAF)
Reg.: 71-1368
c/n: 02
one of 2 built |
| March Field Air Museum [Riverside, CA, USA] |
| [Photo-ID: 10932] © Karsten Palt 2015-06-03 |
 | Boeing
YC-14A
Reg.: 72-1873
c/n: P1
one of 2 built |
| Pima Air and Space Museum [Tucson, AZ, USA] |
| [Photo-ID: 10933] © Karsten Palt 2015-06-03 |
 | Boeing
YC-14A
Reg.: 72-1873
c/n: P1
one of 2 built |
| Pima Air and Space Museum [Tucson, AZ, USA] |
| [Photo-ID: 11371] © Karsten Palt 2015-06-01 |
 | Boeing
YC-14A
Reg.: 72-1874
c/n: P2
one of 2 built, retired 1980, Celebrity Row |
| AMARG - Boneyard [Tucson, AZ, USA] |
| [Photo-ID: 11161] © Karsten Palt 2015-06-03 |
 | North American
YF-107A
United States Air Force (USAF)
Reg.: 55-5118
c/n: 212-1
one of 3 built F-107 |
| Pima Air and Space Museum [Tucson, AZ, USA] |
| [Photo-ID: 6153] © Karsten Palt 2012-06-14 |
 | Convair
YF2Y-1 Sea Dart
United States Navy
Reg.: 135763
|
| San Diego Air and Space Museum [San Diego, CA, USA] |
| [Photo-ID: 6338] © Karsten Palt 2012-06-12 |
 | Stearman
YPT-9B (6-L) Cloudboy
Reg.: N795H / 795
c/n: 6004
flyable |
| Yanks Air Museum [Chino, CA, USA] |
| [Photo-ID: 6339] © Karsten Palt 2012-06-12 |
 | Stearman
YPT-9B (6-L) Cloudboy
Reg.: N795H / 795
c/n: 6004
flyable |
| Yanks Air Museum [Chino, CA, USA] |
| [Photo-ID: 10549] © Karsten Palt 2014-06-08 |
 | Morovan
Z-135
Reg.: OK-045
c/n: 1
Prototype, no mass production |
| Letecke Muzeum Kbely [Prague, Czech Republic] |
