- Date
- July 22, 1990, 19:05 local (Jul 23, 1990, 01:05 UTC)
- Place
- Fowler, CO
- Injuries
- 2 fatal
- Damage
- Destroyed
- Phase of flight
- Approach
- Aircraft
- N23GGOlsen Pursuit
- Weather
- Visual (VMC) · Day
- Status
- Completed · report March 31, 1993
- Report
- Approved by Office Director
- FAA report
- 19900722027559A
- Case key
- 17796
From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.
On this page
Probable cause
Failure of the pilot to maintain adequate airspeed on final approach to land, which resulted in an inadvertent stall. A factor relate to the accident was: the pilot's physical impairment from carbon monoxide.
Sequence of events
NTSB’s coding before 2008: each occurrence and phase of flight, and the causes and factors under it. The codes are defined in NTSB’s coding manual.
Analysis
While on a local flt, the acft impacted the gnd about 3/10 of a mile short of rwy 4. There were no known witness to the acdnt, though one person saw dust from the acdnt site & went to investigate. The aircraft came to rest on its belly & burned. There was evidence that the acft had impacted in a level attitude, but there was no apparent forward movement of the acft after principal impact. No preimpact part failure or malfunction of the acft or eng was found during the investigation. Toxicology exams of the plt's & psgr's blood showed a carboxyhemoglogin (carbon monoxide) saturation of 19% & 16%, respectively. The toxicologist noted that smokers would be expected to have a saturation level of 3% to 10%. Also, metabolites of marijuana (carboxyle acid) were fnd in the plt's & psgr's blood at low levels of 9 & 7 ng/ml, respectively. The specific source of carbon monoxide was not determined.
Aircraft
- Registration
- N23GG
- Reported as
- Olsen Pursuit
- Category
- Airplane, amateur-built
- Serial number
- 9123
- Airframe hours
- 93
- Engine
- Lycoming O-320-E2C, 150 horsepower, reciprocating
- Damage
- Destroyed
- Fire
- On-Ground
- Flight
- Personal · Part 91
- Registered owner
- Phillip W. Switzer
- Airworthiness certificate
- Special, Experimental (Special)
- Last inspection
- Unknown · July 11, 1990
- Departed
- 09V
- Airport
- 09V · Fowler, runway 4, 3,400 × 75 ft, dirt
Matched to the registry by N-number and the event date; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.
Flight crew
As NTSB recorded them. NTSB leaves out names.
- Role
- Pilot
- Age
- 35
- Certificate
- Private
- Airplane ratings
- Single-engine land
- Medical
- Class 3, Valid Medical--w/ waivers/lim
- Seat
- Right
- Toxicology
- Performed
- Flight hours
- 305 total
Weather
- Conditions
- Visual (VMC) · Day
- Wind
- 100° at 10 knots
- Visibility
- 40 statute miles
- Temperature
- 70 °F, dew point 57 °F
- Altimeter
- 30.00 inHg
- Observed at
- LHX, 30 nm away
FAA reports on this event · 1
The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.