1956 XP6M-1, 138822, c/n XP-2

four 13000 lbs Allison J71-A-6

One of two prototypes. The other 138821. Both broak up during flight testing.

First flight May 18, 1956. Crashed near Odessa, Delaware Nov 9, 1956 due to faulty elevator jack. Crew of 4 ejected safely.