Air Force Times: Pilot assigned to Pentagon - Ouch
Issue Date: February 02, 2004
Thunderbird crash blamed on altitude miscalculation
Pilot ejected with less than a second left
By Bruce Rolfsen
Times staff writer
A 1,000-foot mistake led to the crash of an Air Force Thunderbird F-16 in the opening minutes of an air show last September.
“This was a large error when dealing with low-level aerial flying,” said the commander of the Thunderbirds, Lt. Col. Richard McSpadden of Nellis Air Force Base, Nev.
The pilot involved in the accident, Capt. Chris R. Stricklin, 31, mistakenly thought he was about 1,000 feet higher as he began a “split-S” maneuver.
The maneuver should end about 500 feet above the ground. When Stricklin realized the F-16 likely wouldn’t pull out of the dive in time, he turned the plane away from the crowd of about 85,000 people at Mountain Home Air Force Base, Idaho, and stayed with the jet until ejecting eight-tenths of a second before impact.
Stricklin is assigned to the Pentagon and hasn’t flown as a Thunderbird since the accident. He has logged about 1,480 hours in fighters.
McSpadden said he would fly with Stricklin again and praised the pilot’s performance once he realized he was in trouble.
In the wake of the Sept. 14 accident, the Thunderbird’s parent command, the Air Combat Command, convened an accident-investigation board independent of internal review by the Thunderbirds. Col. Bob Beletic, a veteran F-16 pilot and commander of the 20th Fighter Wing’s operations group at Shaw Air Force Base, S.C., headed the investigation.
Beletic said Stricklin had a momentary lapse when he lost track of his altitude. Training at Nellis, the Thunderbirds’ home, had made Stricklin accustomed to starting flights at 2,000 feet above sea level.
Investigators concluded that although the Thunderbird pilots were aware that Mountain Home was 3,000 feet above sea level, as Stricklin began his flight he subconsciously assumed he was starting out at 2,000 feet.
The accident occurred on the first maneuver Stricklin performed, the report said. As the pilot of Thunderbird 6, Stricklin was the last Thunderbird to take off.
As he had done about 200 times before, Stricklin began by flying a maximum climb at 55 degrees. He rolled the plane over so he was flying upside down and began the split-S maneuver. When the maneuver is performed correctly, the jet reaches an altitude of 3,500 feet before rocketing downward. Because Stricklin miscalculated his altitude, he topped out at about 2,760 feet.
A safe descent would require 3,000 feet. As Stricklin started his descent, he was short 240 feet.
Stricklin ejected at about 140 feet above the ground and less than a second before the jet hit the midfield of Mountain Home’s runway complex at about 250 mph. The $20.4 million jet skidded several hundred feet while burning fuel billowed behind it.
When the Thunderbirds debut their 2004 season March 22 at Nellis for Air Force leaders, the opening split-S maneuver will be in the show, McSpadden said.
However, the descent won’t begin until the plane is 4,500 feet above the ground, the commander said.
That decision was made after investigators determined the maneuver’s 500-foot margin of error, accepted for the past 20 years, was too small, McSpadden said.
Beletic and McSpadden said that before September, there was never an accident during the maneuver.
Beletic’s report also found that the Thunderbirds’ high operations tempo might have led in part to Stricklin’s distraction. The Sept. 14 performance was the team’s sixth sortie in four days. A waiver was required to fly that often in such a short time, the report said.
McSpadden countered that Stricklin had 10 hours of sleep the night before the performance