Safety Board investigators reviewed Federal Aviation Administration (FAA) radar data and voice
tapes. They indicate that the Cirrus had entered SDL’s left-hand traffic pattern for runway 3 from
the north. The FAA SDL’s local air traffic controller sequenced the Cirrus to land behind a
Gulfstream Aerospace GV-SP (G550), which was ahead of the Cirrus. The Gulfstream had entered the
left traffic pattern directly into the base leg. The local controller advised the Cirrus pilot to
report when he had the Gulfstream in sight. The Cirrus pilot reported that the sun was in his eyes,
and he did not report seeing the Gulfstream. Seconds later, the controller advised the Cirrus pilot
that the Gulfstream was to his left and on final approach, and the Cirrus turned onto the base leg.
Subsequently, as the Cirrus was entering the final approach leg and was about 1,900 feet (based
upon the airplane’s Mode C transponder altitude), the Gulfstream overflew the Cirrus about 2,100
feet (Mode C transponder altitude).
The passenger in the Cirrus reported to the Safety Board investigator that immediately thereafter
the pilot observed the Gulfstream, and he so informed the controller while continuing toward the
runway. Then the controller advised the Cirrus pilot to standby for a possible go-around. Less than
1 minute later the Cirrus rolled into a steep bank and descended in a corkscrew-like maneuver into
the ground, according to a ground-based witness who was monitoring the controller’s communications
and watching the airplane.