Lovely day, a balmy 74 degrees at the Santa Monica airport.

FORBES: Who Are Your Heroes?

The company gave zero official indication as to the nature of the event, which will be held at Barker Hanger, near the Santa Monica Airport.

FORBES: Amazon Sets Sept. 6 L.A. Press Event; New Kindles Coming?

The pilot of the Cessna 210 declared an emergency for unknown reasons around 6:10 p.m. shortly after leaving Santa Monica Airport, according to Ian Gregor, a spokesman with the Federal Aviation Administration in its Western-Pacific region.

CNN: 1 killed after plane crashes in Los Angeles neighborhood

The golf-course plane, a single-engine Cessna 172, was flying west at an altitude of 3, 500 feet when the second plane, also a Cessna 172, approached from the east after leaving Santa Monica Airport for a test flight.

NPR: 1 Dead After 2 Small Planes Collide Near LA