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LAX83FU009 · American Aerolights EAGLE XL

26 Jun 1983 · SOMMERTON, AZ, United States

American Aerolights EAGLE XL · Accident: airframe, component or system failure while maneuvering

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Event

NTSB case
LAX83FU009
Event typeAccident: someone killed or seriously injured, or the aircraft substantially damaged (NTSB definition). Incident: an occurrence that affected or could have affected safety, short of that. Glossary
Accident
InvestigationHow far the investigation had got when the record was published: preliminary, ongoing, final or completed. Unknown where the source does not say. Glossary
Completed
API-reported fatalities
1 · all aircraft and ground
Ground fatalities
0
OperationWhat kind of flying it was, grouped by the rules it flew under: airline (US Part 121), air taxi and commuter (Part 135), general aviation (Part 91 and similar), military or government. Glossary
General aviation
WeatherVisual meteorological conditions (VMC): good enough to fly by looking outside. Instrument conditions (IMC): cloud or low visibility, flying by instruments. Glossary
Visual Meteorological Cond

American Aerolights EAGLE XL

Category
Ultralight
RegistrationThe aircraft's tail number, such as N12345 or G-ABCD. Registrations are reissued, so the same one years apart can be a different aircraft. Glossary
UNREG
Operator
Unknown
Onboard fatalities
Unknown
Route
From not recordedTo not recorded
Aircraft age
Not recorded
Flight rulesThe regulations the flight operated under: in the US, Part 91 (general aviation), Part 121 (airlines), Part 135 (air taxi and commuter) and others; for flights abroad, the NTSB's coarser commercial or non-commercial code. Glossary
Part 103: Ultralight
Phase of flightThe stage of the flight when things started to go wrong: standing, taxi, takeoff, initial climb, en route, maneuvering, approach or landing. Glossary
Maneuvering
First occurrenceThe single coded event the NTSB judges best describes what happened (records from 2008 on). Older records name the first occurrence in the sequence instead. Glossary
Airframe, component or system failure
DamageDestroyed: beyond practical repair. Substantial: damage that affects the structure, performance or handling and normally needs major repair. Minor: less than that. Glossary
Destroyed

Cause areas

  • Pilot in command › Design stress limits of aircraft, exceeded
  • Pilot in command › Level off, delayed

Approximate · Coordinates as recorded by the NTSB; no uncertainty radius is established.

NTSB narrative

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.

Verbatim NTSB analysis from the NTSB dataset

Sources

NTSB record LAX83FU009
Event ID
20001214X43383
Case number
LAX83FU009
Dataset
historical-pre2008
Source SHA-256
89e2df6d848e7ab3b42e7d7c7a03ff403303057a26ca04c95b3ea67201c3ce74
Source notes (4)
  • Unreviewed is an editorial label, not an investigation status. API-sourced is not report-checked or human-reviewed. Explicit event totals are used without summing aircraft injury tables; onboard allocation is withheld. Unknown values remain unknown. The operation category is mapped from the NTSB-reported FAR part and has not been reviewed.
  • Filled from the NTSB case API where the bulk record had no value: investigation status. Values present in the bulk record are kept.
  • The date is the local date, which is the same as the UTC date the NTSB stores.
  • API snapshot SHA-256: cd01385c6444cc93f43cb2ec0f9db20e48f2d02fcc6e788f887eefcc1db06830; retrieved 2026-09-21T06:35:09.655Z.