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CHI90DEE05 · DAN T. Zelazo AVID/SPEEDWING AVID/SPEED

22 Apr 1990 · Sandwich, IL, United States

DAN T. Zelazo AVID/SPEEDWING AVID/SPEED · Accident: total loss of engine power (non-mechanical) during initial climb

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Event

NTSB case
CHI90DEE05
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
0 · 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

DAN T. Zelazo AVID/SPEEDWING AVID/SPEED

Category
Airplane
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
N396DZ
Operator
Zelazo, Dan T. · private individual
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 91: General Aviation
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
Initial climb
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
Total loss of engine power (non-mechanical)
Also codedOther events the NTSB coded in the sequence, such as a wire strike after a loss of power. Flight Findings uses them for its kinds of event. Glossary
Fuel starvation; Tree(s)
DamageDestroyed: beyond practical repair. Substantial: damage that affects the structure, performance or handling and normally needs major repair. Minor: less than that. Glossary
Substantial

Cause areas

  • Fuel system, line › Disconnected

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

NTSB narrative

THE OWNER-BUILT AIRPLANE HAD TAKEN OFF AND WAS CLIMBING ON RUNWAY HEADING WHEN THE PILOT STATES HE BEGAN TO LOSE ENGINE POWER AND SETTLE. THE PILOT MAINTAINED COURSE AND FLYING SPEED AS THE AIRPLANE DESCENDED INTO A 50 FOOT TREE TOP WHERE IT HUNG SUSPENDED. EXAMINATION OF THE AIRPLANE REVEALED FUEL IN THE TANK BUT ALL LINES DOWNSTREAM OF THE IN-LINE FUEL FILTER WERE DRY. THE MAIN FUEL LINE TO THE ENGINE WAS DISCONNECTED AT THE INLET TO THE FUEL FILTER. HOSE CLAMPS WERE MISSING AT CONNECTIONS THROUGHOUT THE FUEL SYSTEM FROM TANK THROUGH CARBURETOR.

Probable cause

IMPROPER INSTALLATION OF A FUEL LINE BY THE P. LOT/MANUFACTURER WHICH RESULTED IN SEPARATION OF A FUEL LINE, RESULTING IN FUEL STARVATION.

Verbatim NTSB analysis and probable cause from the NTSB dataset

Sources

NTSB record CHI90DEE05
Event ID
20001212X22870
Case number
CHI90DEE05
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: d428d818576b434b4f2819f59103093ab5acb17b026bb344febb305f8ae28b16; retrieved 2026-09-21T23:54:44.336Z.