# Accident 19891124046569A: Amtrth THORPT18, Colorado City, CO, November 24, 1989

- Type: FAA accident report (Accident/Incident Data System), as reported
- Date: November 24, 1989, 07:54 local time
- Place: Colorado City, CO
- Airport: Greenhorn Valley Airport
- Damage: Destroyed
- Phase of flight: To Init Climb(1st Pwr Reduct)
- Operating rules: General operating rules (Part 91)
- Location: 37.9404° N, 104.8410° W: From the FAA, an estimate near the named town, within about 3 miles
- Nearby events: https://openairdocs.org/map.md?lat=37.9404&lon=-104.8410&mi=10
- Aircraft: N18FL, a cancelled registration (https://openairdocs.org/deregistered/N18FL-1989-12-11) (OpenAirDocs)
- Registry model: Lanier Frank J THORP T-18 (registry code 89510M3, https://openairdocs.org/model/lanier-frank-j-thorp-t-18) (OpenAirDocs)
- Reported make and model: AMTRTH THORPT18
- Reported engine: LYC O290*
- People aboard: 1
- Fatal injuries: 1
- Pilot flight hours: 36 in this make and model
- NTSB investigation: [NTSB DEN90DTE01](https://openairdocs.org/ntsb/DEN90DTE01) (OpenAirDocs)
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/19891124046569A

## Narrative

As the FAA filed it, in capitals; the FAA replaces private details with ^PRIVACY DATA OMITTED^.

TRAILED BLUE SMOKE ON CLIMBOUT, STALLED AND HIT GROUND NEAR VERTICAL IMPACT. PROP DAMAGE INDICATES NOT UNDER POWER.

## The NTSB's investigation of this event (1)

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [NTSB DEN90DTE01](https://openairdocs.org/ntsb/DEN90DTE01), Nov 24, 1989: Lanier Thorp T-18 (N18FL), Colorado City, CO, destroyed, 1 fatal. Probable cause: LOSS OF ENGINE POWER WITH CARBON FOULING OF THE SPARK PLUGS, AND FAILURE OF THE PILOT TO MAINTAIN ADEQUATE AIRSPEED, WHICH RESULTED IN AN INADVERTENT STALL.

From the FAA Accident/Incident Data System. Reports are matched to registry aircraft by N-number and event date, checked against the reported make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. For accidents, the NTSB's own investigation is the fuller record.

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