NTSB Identification: LAX83FU009.
The docket is stored on NTSB microfiche number 24861.
Accident occurred Sunday, June 26, 1983 in SOMMERTON, AZ
Aircraft: AMERICAN AEROLIGHTS EAGLE XL, registration: NONE
Injuries: 1 Fatal.
NTSB investigators either traveled in support of this investigation or conducted a significant amount of investigative work without any travel, and used data obtained from various sources to prepare this aircraft accident report.
A WITNESS IN ANOTHER ULTRALIGHT SAW THE PLT OF THE EAGLE XL CLIMB TO ABOUT 800 TO 1000 FT AGL AFTER TAKING OFF. THE WITNESS WAS APRX 500 FT AGL WHEN HE SAW THE EAGLE XL START A STEEP DESCENT FROM HIS 8 TO 9 O'CLOCK HIGH POSITION AND THOUGHT THE EAGLE XL PLT WAS DESCENDING TO MEET HIM. HE LOOKED AWAY TO SCAN FOR OTHER TRAFFIC AND WHEN HE LOOKED BACK HE SAW THE EAGLE XL JUST BEFORE IT IMPACTED THE GROUND IN A NEAR VERTICLE DIVE. HE NOTICED THAT BEFORE IMPACT THE LEFT WING APPEARED TO BE SWEPT BACK APRX 15 TO 20 DEG MORE THAN THE RIGHT WING. EXAM OF THE WRECKAGE REVEALED THAT THE LEFT FRONT FLYING WIRE WAS FOUND SEPARATED AT THE BOWSPRIT ATTACHPOINT. THE PILOT HAD PREVIOUSLY FAILED A FLIGHT PHYSICAL DUE TO HIS FAILURE TO PASS TWO DEPTH PERCEPTION TESTS. REPORTEDLY, THE PLT HAD PREVIOUSLY MADE RAPID DESCENTS AND HAD SAID HE ENJOYED DOING THESE MANEUVERS.
The National Transportation Safety Board determines the probable cause(s) of this accident to be:LEVEL OFF..DELAYED..PILOT IN COMMAND
The National Transportation Safety Board determines the probable cause(s) of this accident to be:DESIGN STRESS LIMITS OF AIRCRAFT..EXCEEDED..PILOT IN COMMAND
PHYSICAL IMPAIRMENT(VISUAL DEFICIENCY)..PILOT IN COMMAND
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