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X-15 History


X-15 with XLR-11 rocket X-15A
 

X-15A-2 X-15A-2 with external tanks, scramjet and ablative coating

This list contains only free flights.
Unpowered glide flights are marked in grey.
Flights qualifying as spaceflights are marked with a *.
F = Failure (loss of vehicle)
P = Partial failuire
A = Aborted flight

# Date Flight Crew Crew Trajectory Remarks
1 08.06.1959 X-15 (XLR-11) 1-F1 Cdr Crossfield, Albert Scott (1) 11445 m; 840 km/h
2 17.09.1959 X-15 (XLR-11) 2-F1 Cdr Crossfield, Albert Scott (2) 15954 m; 2241 km/h
3 17.10.1959 X-15 (XLR-11) 2-F2 Cdr Crossfield, Albert Scott (3) 18831 m; 2283 km/h
4 05.11.1959 X-15 (XLR-11) 2-F3 Cdr Crossfield, Albert Scott (4) 13857 m; 1062 km/h P
5 23.01.1960 X-15 (XLR-11) 1-F2 Cdr Crossfield, Albert Scott (5) 20374 m; 2685 km/h
6 11.02.1960 X-15 (XLR-11) 2-F4 Cdr Crossfield, Albert Scott (6) 26858 m; 2359 km/h
7 17.02.1960 X-15 (XLR-11) 2-F5 Cdr Crossfield, Albert Scott (7) 16045 m; 1667 km/h (P)
8 17.03.1960 X-15 (XLR-11) 2-F6 Cdr Crossfield, Albert Scott (8) 16045 m; 2283 km/h
9 25.03.1960 X-15 (XLR-11) 1-F3 Cdr Walker, Joseph Albert (1) 14822 m; 2124 km/h
10 29.03.1960 X-15 (XLR-11) 2-F7 Cdr Crossfield, Albert Scott (9) 15235 m; 2080 km/h
11 31.03.1960 X-15 (XLR-11) 2-F8 Cdr Crossfield, Albert Scott (10) 15653 m; 2156 km/h
12 13.04.1960 X-15 (XLR-11) 1-F4 Cdr White, Robert Michael (1) 14630 m; 2018 km/h
13 19.04.1960 X-15 (XLR-11) 1-F5 Cdr Walker, Joseph Albert (2) 18134 m; 2718 km/h
14 06.05.1960 X-15 (XLR-11) 1-F6 Cdr White, Robert Michael (2) 18574 m; 2336 km/h
15 12.05.1960 X-15 (XLR-11) 1-F7 Cdr Walker, Joseph Albert (3) 23738 m; 3397 km/h
16 19.05.1960 X-15 (XLR-11) 1-F8 Cdr White, Robert Michael (3) 33222 m; 2558 km/h
17 26.05.1960 X-15 (XLR-11) 2-F9 Cdr Crossfield, Albert Scott (11) 15631 m; 2336 km/h
18 04.08.1960 X-15 (XLR-11) 1-F9 Cdr Walker, Joseph Albert (4) 23809 m; 3533 km/h
19 12.08.1960 X-15 (XLR-11) 1-F10 Cdr White, Robert Michael (4) 41605 m; 2851 km/h
20 19.08.1960 X-15 (XLR-11) 1-F11 Cdr Walker, Joseph Albert (5) 23159 m; 3195 km/h
21 17.09.1960 X-15 (XLR-11) 1-F12 Cdr White, Robert Michael (5) 24343 m; 3510 km/h
22 23.09.1960 X-15 (XLR-11) 1-F13 Cdr Petersen, Forrest Silas (1) 16168 m; 1783 km/h (P)
23 20.10.1960 X-15 (XLR-11) 1-F14 Cdr Petersen, Forrest Silas (2) 16398 m; 2059 km/h
24 28.10.1960 X-15 (XLR-11) 1-F15 Cdr McKay, John Barron (1) 15453 m; 2145 km/h
25 04.11.1960 X-15 (XLR-11) 1-F16 Cdr Rushworth, Robert Aitken (1) 14905 m; 2071 km/h
26 15.11.1960 X-15A 2-F10 Cdr Crossfield, Albert Scott (12) 24750 m; 3154 km/h
27 17.11.1960 X-15 (XLR-11) 1-F17 Cdr Rushworth, Robert Aitken (2) 16688 m; 2018 km/h
28 22.11.1960 X-15A 2-F11 Cdr Crossfield, Albert Scott (13) 18867 m; 2665 km/h
29 30.11.1960 X-15 (XLR-11) 1-F18 Cdr Armstrong, Neil Alden (1) 14886 m; 1858 km/h (p)
30 06.12.60 X-15A 2-F12 Cdr Crossfield, Albert Scott (14) 16268 m; 3027 km/h
31 09.12.1960 X-15 (XLR-11) 1-F19 Cdr Armstrong, Neil Alden (2) 15269 m; 1911 km/h
32 01.02.1961 X-15 (XLR-11) 1-F20 Cdr McKay, John Barron (2) 15170 m; 1949 km/h
33 07.02.1961 X-15 (XLR-11) 1-F21 Cdr White, Robert Michael (6) 23820 m; 3660 km/h
34 07.03.1961 X-15A 2-F13 Cdr White, Robert Michael (7) 23610 m; 4674 km/h
35 30.03.1961 X-15A 2-F14 Cdr Walker, Joseph Albert (6) 51700 m; 4441 km/h
36 21.04.1961 X-15A 2-F15 Cdr White, Robert Michael (8) 32000 m; 4946 km/h
37 25.05.1961 X-15A 2-F16 Cdr Walker, Joseph Albert (7) 32850 m; 5321 km/h
38 23.06.1961 X-15A 2-F17 Cdr White, Robert Michael (9) 32830 m; 5797 km/h
39 10.08.1961 X-15A 1-F22 Cdr Petersen, Forrest Silas (3) 23830 m; 4401 km/h
40 12.09.1961 X-15A 2-F18 Cdr Walker, Joseph Albert (8) 34840 m; 5821 km/h
41 28.09.1961 X-15A 2-F19 Cdr Petersen, Forrest Silas (4) 31030 m; 5792 km/h
42 04.10.1961 X-15A 1-F23 Cdr Rushworth, Robert Aitken (3) 23770 m; 4553 km/h
43 11.10.1961 X-15A 2-F20 Cdr White, Robert Michael (10) 66150 m; 5868 km/h
44 17.10.1961 X-15A 1-F24 Cdr Walker, Joseph Albert (9) 33100 m; 6275 km/h
45 09.11.1961 X-15A 2-F21 Cdr White, Robert Michael (11) 30950 m; 6586 km/h
46 20.12.1961 X-15A 3-F1 Cdr Armstrong, Neil Alden (3) 24700 m; 4026 km/h
47 10.01.1962 X-15A 1-F25 Cdr Petersen, Forrest Silas (5) 13640 m; 1038 km/h (A)
48 17.01.1962 X-15A 3-F2 Cdr Armstrong, Neil Alden (4) 40690 m; 6058 km/h
49 05.04.1962 X-15A 3-F3 Cdr Armstrong, Neil Alden (5) 54860 m; 4586 km/h
50 19.04.1962 X-15A 1-F26 Cdr Walker, Joseph Albert (10) 46940 m; 6220 km/h
51 20.04.1962 X-15A 3-F4 Cdr Armstrong, Neil Alden (6) 63250 m; 6097 km/h
52 30.04.1962 X-15A 1-F27 Cdr Walker, Joseph Albert (11) 75190 m; 5614 km/h
53 08.05.1962 X-15A 2-F22 Cdr Rushworth, Robert Aitken (4) 21460 m; 5670 km/h
54 22.05.1962 X-15A 1-F28 Cdr Rushworth, Robert Aitken (5) 30600 m; 5551 km/h
55 01.06.1962 X-15A 2-F23 Cdr White, Robert Michael (12) 40420 m; 5913 km/h
56 07.06.1962 X-15A 1-F29 Cdr Walker, Joseph Albert (12) 31580 m; 5908 km/h
57 12.06.1962 X-15A 3-F5 Cdr White, Robert Michael (13) 56270 m; 5659 km/h
58 21.06.1962 X-15A 3-F6 Cdr White, Robert Michael (14) 75190 m; 5858 km/h
59 27.06.1962 X-15A 1-F30 Cdr Walker, Joseph Albert (13) 37700 m; 6603 km/h
60 29.06.1962 X-15A 2-F24 Cdr McKay, John Barron (3) 25360 m; 5278 km/h
61 16.07.1962 X-15A 1-F31 Cdr Walker, Joseph Albert (14) 32670 m; 5911 km/h
62 17.07.1962 X-15A 3-F7 * Cdr White, Robert Michael (15) / 1 95940 m; 6166 km/h
63 19.07.1962 X-15A 2-F25 Cdr McKay, John Barron (4) 25680 m; 5590 km/h
64 26.07.1962 X-15A 1-F32 Cdr Armstrong, Neil Alden (7) 30150 m; 6418 km/h
65 02.08.1962 X-15A 3-F8 Cdr Walker, Joseph Albert (15) 44040 m; 5532 km/h
66 08.08.1962 X-15A 2-F26 Cdr Rushworth, Robert Aitken (6) 27700 m; 4735 km/h
67 14.08.1962 X-15A 3-F9 Cdr Walker, Joseph Albert (16) 59010 m; 6029 km/h
68 20.08.1962 X-15A 2-F27 Cdr Rushworth, Robert Aitken (7) 27000 m; 5686 km/h
69 29.08.1962 X-15A 2-F28 Cdr Rushworth, Robert Aitken (8) 29630 m; 5546 km/h
70 28.09.1962 X-15A 2-F29 Cdr McKay, John Barron (5) 20790 m; 4450 km/h
71 04.10.1962 X-15A 3-F10 Cdr Rushworth, Robert Aitken (9) 34200 m; 5620 km/h
72 09.10.1962 X-15A 2-F30 Cdr McKay, John Barron (6) 39700 m; 5979 km/h
73 23.10.1962 X-15A 3-F11 Cdr Rushworth, Robert Aitken (10) 41000 m; 6056 km/h
74 09.11.1962 X-15A 2-F31 Cdr McKay, John Barron (7) 16450 m; 1640 km/h (PA)
75 14.12.1962 X-15A 3-F12 Cdr White, Robert Michael (16) 43100 m; 6021 km/h
76 20.12.1962 X-15A 3-F13 Cdr Walker, Joseph Albert (17) 48900 m; 6103 km/h
77 17.01.1963 X-15A 3-F14 * Cdr Walker, Joseph Albert (18) / 1 82810 m; 5917 km/h
78 11.04.1963 X-15A 1-F33 Cdr Rushworth, Robert Aitken (11) 22680 m; 4608 km/h
79 18.04.1963 X-15A 3-F15 Cdr Walker, Joseph Albert (19) 28190 m; 6066 km/h
80 25.04.1963 X-15A 1-F34 Cdr McKay, John Barron (8) 32160 m; 5879 km/h
81 02.05.1963 X-15A 3-F16 Cdr Walker, Joseph Albert (20) 63820 m; 5612 km/h
82 14.05.1963 X-15A 3-F17 Cdr Rushworth, Robert Aitken (12) 29140 m; 5792 km/h
83 15.05.1963 X-15A 1-F35 Cdr McKay, John Barron (9) 37860 m; 6204 km/h
84 29.05.1963 X-15A 3-F18 Cdr Walker, Joseph Albert (21) 28040 m; 6208 km/h
85 18.06.1963 X-15A 3-F19 Cdr Rushworth, Robert Aitken (13) 68180 m; 5694 km/h
86 25.06.1963 X-15A 1-F36 Cdr Walker, Joseph Albert (22) 34080 m; 6293 km/h
87 27.06.1963 X-15A 3-F20 * Cdr Rushworth, Robert Aitken (14) / 1 86870 m; 5511 km/h
88 09.07.1963 X-15A 1-F37 Cdr Walker, Joseph Albert (23) 69010 m; 5842 km/h
89 18.07.1963 X-15A 1-F38 Cdr Rushworth, Robert Aitken (15) 31940 m; 6315 km/h
90 19.07.1963 X-15A 3-F21 * Cdr Walker, Joseph Albert (24) / 2 106010 m; 5969 km/h
91 22.08.1963 X-15A 3-F22 * Cdr Walker, Joseph Albert (25) / 3 107960 m; 6105 km/h
92 07.10.1963 X-15A 1-F39 Cdr Engle, Joe Henry (1) 23710 m; 4560 km/h
93 29.10.1963 X-15A 1-F40 Cdr Thompson, Milton Orville (1) 22600 m; 4364 km/h
94 07.11.1963 X-15A 3-F23 Cdr Rushworth, Robert Aitken (16) 25080 m; 4706 km/h
95 14.11.1963 X-15A 1-F41 Cdr Engle, Joe Henry (2) 27680 m; 5287 km/h
96 27.11.1963 X-15A 3-F24 Cdr Thompson, Milton Orville (2) 27371 m; 5326 km/h
97 05.12.1963 X-15A 1-F42 Cdr Rushworth, Robert Aitken (17) 30785 m; 6465 km/h
98 08.01.1964 X-15A 1-F43 Cdr Engle, Joe Henry (3) 42642 m; 5818 km/h
99 16.01.1964 X-15A 3-F25 Cdr Thompson, Milton Orville (3) 21641 m; 5216 km/h
100 28.01.1964 X-15A 1-F44 Cdr Rushworth, Robert Aitken (18) 32736 m; 5821 km/h
101 19.02.1964 X-15A 3-F26 Cdr Thompson, Milton Orville (4) 23957 m; 5662 km/h
102 13.03.1964 X-15A 3-F27 Cdr McKay, John Barron (10) 23165 m; 5458 km/h
103 27.03.1964 X-15A 1-F45 Cdr Rushworth, Robert Aitken (19) 30937 m; 6158 km/h
104 08.04.1964 X-15A 1-F46 Cdr Engle, Joe Henry (4) 53340 m; 5580 km/h
105 29.04.1964 X-15A 1-F47 Cdr Rushworth, Robert Aitken (20) 30968 m; 6285 km/h
106 12.05.1964 X-15A 3-F28 Cdr McKay, John Barron (11) 22189 m; 4962 km/h
107 19.05.1964 X-15A 1-F48 Cdr Engle, Joe Henry (5) 59680 m; 5262 km/h
108 21.05.1964 X-15A 3-F29 Cdr Thompson, Milton Orville (5) 19568 m; 3001 km/h
109 25.06.1964 X-15A-2 2A-F1 Cdr Rushworth, Robert Aitken (21) 25390 m; 4994 km/h
110 30.06.1964 X-15A 1-F49 Cdr McKay, John Barron (12) 30358 m; 5364 km/h
111 08.07.1964 X-15A 3-F30 Cdr Engle, Joe Henry (6) 51938 m; 5664 km/h
112 29.07.1964 X-15A 3-F31 Cdr Engle, Joe Henry (7) 23774 m; 5250 km/h
113 12.08.1964 X-15A 3-F32 Cdr Thompson, Milton Orville (6) 24750 m; 5688 km/h
114 14.08.1964 X-15A-2 2A-F2 Cdr Rushworth, Robert Aitken (22) 31468 m; 5776 km/h
115 26.08.1964 X-15A 3-F33 Cdr McKay, John Barron (13) 27737 m; 6216 km/h
116 03.09.1964 X-15A 3-F34 Cdr Thompson, Milton Orville (7) 23957 m; 5817 km/h
117 28.09.1964 X-15A 3-F35 Cdr Engle, Joe Henry (8) 29566 m; 6256 km/h
118 29.09.1964 X-15A-2 2A-F3 Cdr Rushworth, Robert Aitken (23) 29809 m; 5699 km/h
119 15.10.1964 X-15A 1-F50 Cdr McKay, John Barron (14) 25878 m; 4904 km/h
120 30.10.1964 X-15A 3-F36 Cdr Thompson, Milton Orville (8) 25786 m; 5009 km/h
121 30.11.1964 X-15A-2 2A-F4 Cdr McKay, John Barron (15) 26579 m; 4970 km/h
122 09.12.1964 X-15A 3-F37 Cdr Thompson, Milton Orville (9) 28164 m; 5990 km/h
123 10.12.1964 X-15A 1-F51 Cdr Engle, Joe Henry (9) 34503 m; 5913 km/h
124 22.12.1964 X-15A 3-F38 Cdr Rushworth, Robert Aitken (24) 24750 m; 5781 km/h
125 13.01.1965 X-15A 3-F39 Cdr Thompson, Milton Orville (10) 30297 m; 5973 km/h
126 02.02.1965 X-15A 3-F40 Cdr Engle, Joe Henry (10) 29931 m; 6253 km/h
127 17.02.1965 X-15A-2 2A-F5 Cdr Rushworth, Robert Aitken (25) 28986 m; 5649 km/h
128 26.02.1965 X-15A 1-F52 Cdr McKay, John Barron (16) 46817 m; 6034 km/h
129 26.03.1965 X-15A 1-F53 Cdr Rushworth, Robert Aitken (26) 31059 m; 5760 km/h
130 23.04.1965 X-15A 3-F41 Cdr Engle, Joe Henry (11) 24293 m; 5760 km/h
131 28.04.1965 X-15A-2 2A-F6 Cdr McKay, John Barron (17) 28224 m; 5266 km/h
132 18.05.1965 X-15A-2 2A-F7 Cdr McKay, John Barron (18) 31120 m; 5697 km/h
133 25.05.1965 X-15A 1-F54 Cdr Thompson, Milton Orville (11) 54803 m; 5100 km/h
134 28.05.1965 X-15A 3-F42 Cdr Engle, Joe Henry (12) 63886 m; 6040 km/h
135 16.06.1965 X-15A 3-F43 Cdr Engle, Joe Henry (13) 74585 m; 5477 km/h
136 17.06.1965 X-15A 1-F55 Cdr Thompson, Milton Orville (12) 33071 m; 5697 km/h
137 22.06.1965 X-15A-2 2A-F8 Cdr McKay, John Barron (19) 47518 m; 6336 km/h
138 29.06.1965 X-15A 3-F44 * Cdr Engle, Joe Henry (14) / 1 85527 m; 5522 km/h
139 08.07.1965 X-15A-2 2A-F9 Cdr McKay, John Barron (20) 64800 m; 5887 km/h
140 20.07.1965 X-15A 3-F45 Cdr Rushworth, Robert Aitken (27) 32126 m; 6050 km/h
141 03.08.1965 X-15A-2 2A-F10 Cdr Rushworth, Robert Aitken (28) 63612 m; 5796 km/h
142 06.08.1965 X-15A 1-F56 Cdr Thompson, Milton Orville (13) 31455 m; 5686 km/h
143 10.08.1965 X-15A 3-F46 * Cdr Engle, Joe Henry (15) / 2 82601 m; 5712 km/h
144 25.08.1965 X-15A 1-F57 Cdr Thompson, Milton Orville (14) 65258 m; 5799 km/h
145 26.08.1965 X-15A 3-F47 Cdr Rushworth, Robert Aitken (29) 73030 m; 5426 km/h
146 02.09.1965 X-15A-2 2A-F11 Cdr McKay, John Barron (21) 73091 m; 5744 km/h
147 09.09.1965 X-15A 1-F58 Cdr Rushworth, Robert Aitken (30) 29627 m; 5686 km/h
148 14.09.1965 X-15A 3-F48 Cdr McKay, John Barron (22) 72847 m; 5662 km/h
149 22.09.1965 X-15A 1-F59 Cdr Rushworth, Robert Aitken (31) 30571 m; 5712 km/h
150 28.09.1965 X-15A 3-F49 * Cdr McKay, John Barron (23) / 1 90099 m; 6005 km/h
151 30.09.1965 X-15A 1-F60 Cdr Knight, William Joseph (1) 23350 m; 4373 km/h
152 12.10.1965 X-15A 3-F50 Cdr Knight, William Joseph (2) 28770 m; 5001 km/h
153 14.10.1965 X-15A 1-F61 * Cdr Engle, Joe Henry (16) / 3 81230 m; 5718 km/h
154 27.10.1965 X-15A 3-F51 Cdr McKay, John Barron (24) 72210 m; 5662 km/h
155 03.11.1965 X-15A-2+ 2A-F12 Cdr Rushworth, Robert Aitken (32) 21520 m; 2414 km/h
156 04.11.1965 X-15A 1-F62 Cdr Dana, William Harvey (1) 24440 m; 4450 km/h
157 06.05.1966 X-15A 1-F63 Cdr McKay, John Barron (25) 20850 m; 2307 km/h (P)
158 18.05.1966 X-15A-2 2A-F13 Cdr Rushworth, Robert Aitken (33) 30170 m; 5936 km/h
159 01.07.1966 X-15A-2+ 2A-F14 Cdr Rushworth, Robert Aitken (34) 13720 m; 1646 km/h
160 12.07.1966 X-15A 1-F64 Cdr Knight, William Joseph (3) 39620 m; 5876 km/h
161 18.07.1966 X-15A 3-F52 Cdr Dana, William Harvey (2) 29290 m; 5176 km/h
162 21.07.1966 X-15A-2 2A-F15 Cdr Knight, William Joseph (4) 58610 m; 5741 km/h
163 28.07.1966 X-15A 1-F65 Cdr McKay, John Barron (26) 73700 m; 5967 km/h
164 03.08.1966 X-15A-2 2A-F16 Cdr Knight, William Joseph (5) 75890 m; 5535 km/h
165 04.08.1966 X-15A 3-F53 Cdr Dana, William Harvey (3) 40450 m; 6376 km/h
166 11.08.1966 X-15A 1-F66 Cdr McKay, John Barron (27) 76500 m; 5776 km/h
167 12.08.1966 X-15A-2 2A-F17 Cdr Knight, William Joseph (6) 70440 m; 5586 km/h
168 19.08.1966 X-15A 3-F54 Cdr Dana, William Harvey (4) 54250 m; 5804 km/h
169 25.08.1966 X-15A 1-F67 Cdr McKay, John Barron (28) 78490 m; 5701 km/h
170 30.08.1966 X-15A-2 2A-F18 Cdr Knight, William Joseph (7) 30540 m; 5701 km/h
171 08.09.1966 X-15A 1-F68 Cdr McKay, John Barron (29) 22310 m; 2578 km/h
172 14.09.1966 X-15A 3-F55 Cdr Dana, William Harvey (5) 22980 m; 5770 km/h
173 06.10.1966 X-15A 1-F69 Cdr Adams, Michael James (1) 22980 m; 4666 km/h (P)
174 01.11.1966 X-15A 3-F56 * Cdr Dana, William Harvey (6) / 1 93540 m; 6034 km/h
175 18.11.1966 X-15A-2+ 2A-F19 Cdr Knight, William Joseph (8) 30140 m; 6838 km/h
176 29.11.1966 X-15A 3-F57 Cdr Adams, Michael James (2) 28040 m; 5020 km/h
177 22.03.1967 X-15A 1-F70 Cdr Adams, Michael James (3) 40570 m; 6150 km/h
178 26.04.1967 X-15A 3-F58 Cdr Dana, William Harvey (7) 16280 m; 1871 km/h (?)
179 28.04.1967 X-15A 1-F71 Cdr Adams, Michael James (4) 50900 m; 5985 km/h
180 08.05.1967 X-15A-2 2A-F20 Cdr Knight, William Joseph (9) 29750 m; 5138 km/h
181 17.05.1967 X-15A 3-F59 Cdr Dana, William Harvey (8) 21670 m; 5112 km/h
182 15.06.1967 X-15A 1-F72 Cdr Adams, Michael James (5) 69890 m; 5802 km/h
183 22.06.1967 X-15A 3-F60 Cdr Dana, William Harvey (9) 25050 m; 5810 km/h
184 29.06.1967 X-15A 1-F73 Cdr Knight, William Joseph (10) 52730 m; 4618 km/h
185 20.07.1967 X-15A 3-F61 Cdr Dana, William Harvey (10) 25720 m; 5942 km/h
186 21.08.1967 X-15A-2+ 2A-F21 Cdr Knight, William Joseph (11) 27740 m; 5419 km/h
187 25.08.1967 X-15A 3-F62 Cdr Adams, Michael James (6) 25720 m; 5012 km/h
188 03.10.1967 X-15A-2+ 2A-F22 Cdr Knight, William Joseph (12) 31120 m; 7273 km/h
189 04.10.1967 X-15A 3-F63 Cdr Dana, William Harvey (11) 76530 m; 6270 km/h
190 17.10.1967 X-15A 3-F64 * Cdr Knight, William Joseph (13) / 1 85500 m; 6204 km/h
191 15.11.1967 X-15A 3-F65 * Cdr Adams, Michael James (7) / 1 81080 m; 5744 km/h (F)
192 01.03.1968 X-15A 1-F74 Cdr Dana, William Harvey (12) 31850 m; 4631 km/h
193 04.04.1968 X-15A 1-F75 Cdr Dana, William Harvey (13) 57150 m; 5808 km/h
194 26.04.1968 X-15A 1-F76 Cdr Knight, William Joseph (14) 63090 m; 5704 km/h
195 11.05.1968 X-15A 1-F77 Cdr Dana, William Harvey (14) 67090 m; 5733 km/h
196 16.07.1968 X-15A 1-F78 Cdr Knight, William Joseph (15) 67510 m; 5442 km/h
197 21.08.1968 X-15A 1-F79 * Cdr Dana, William Harvey (15) / 2 81530 m; 5540 km/h
198 13.09.1968 X-15A 1-F80 Cdr Knight, William Joseph (16) 77450 m; 5990 km/h
199 24.10.1968 X-15A 1-F81 Cdr Dana, William Harvey (16) 77720 m; 5979 km/h

X-15A-2+ = X-15A-2 with external tanks