A light aircraft accidentally landed on top of another preparing to take off today.
No-one was injured in the accident at Roanoke airport near Dallas, Texas, although both planes were badly damaged.
Reports said both pilots were neighbours, knew each other, and had been talking on the radio just before the crash.
It appeared that each thought the other had agreed to give way.
The undercarriage of the landing plane, being flown by a learner pilot, became wedged in the top of the wing of the other, and both propellors smashed together.