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FTW98FA394 · Grumman American AA-1B

12 Sept 1998 · YODER, CO, United States

Grumman American AA-1B · Accident: total loss of engine power (non-mechanical) en route

From 00V · MEADOW LAKE, CO to an unrecorded destination

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Event

NTSB case
FTW98FA394
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
2 · 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

Grumman American AA-1B

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
N6288L
Operator
Unknown
Onboard fatalities
Unknown
Route
From 00V · MEADOW LAKE, COTo 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
En route · cruise
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 exhaustion; Stall
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 › Airspeed, not maintained
  • Pilot in command › Stall, inadvertent

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

NTSB narrative

The pilot was giving a 15 minute free orientation ride to an Experimental Aircraft Association, Young Eagle, when the airplane experienced a loss of power. During the forced landing to an open field, the airplane inadvertently stalled and impacted the terrain nose low. Postimpact examination of the airplane found no evidence of fuel or the smell of fuel. No preimpact engine or airframe anomalies, which might have affected the airplane's performance, were identified. Toxicology tests on the pilot revealed multiple over-the-counter and prescribed drugs. NTSB's Medical Officer, stated that in addition to possible adverse effects of the medications, distraction or sensory disturbance as a result of the condition for which the drugs were ingested may have also played a role in the accident.

Probable cause

The pilot's loss of aircraft control due to not maintaining adequate airspeed and the subsequent inadvertent stall. Factors were the pilot's inadequate preflight and the engine's power failure due to fuel exhaustion.

Verbatim NTSB analysis and probable cause from the NTSB dataset

Sources

NTSB record FTW98FA394
Event ID
20001211X11046
Case number
FTW98FA394
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: 11237776fdbaf4f5032cb3e1e2eb512c0d920fdc5034f91dca54f92d595c1f14; retrieved 2026-09-20T22:26:25.367Z.