NTSB: Houston police helicopter rotated before crashing

HOUSTON (AP) — Federal investigators say a video made by a witness shows a Houston police helicopter rotating in the air before plunging to the ground and crashing, killing one person aboard and injuring the other.

In a preliminary report issued Wednesday, the National Transportation Safety Board drew no conclusions as to the cause of the deadly May 2 crash.

The NTSB noted that visibility was good and winds were light when the crash happened near Bush Intercontinental Airport shortly after 2 a.m.

The 12-year-old MD Helicopter 369 was equipped with an augmented reality mapping system to assist navigation in the dark. The NTSB said a data recording from that system has been retrieved.

A funeral is scheduled for Saturday for Tactical Flight Officer Jason Knox, 35, who was fatally injured in the crash. Senior Police Officer Chase Cormier, also 35, was injured.