ASN Wikibase Occurrence # 359625
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| Date: | Wednesday 26 October 1994 |
| Time: | 19:00 LT |
| Type: |  Cessna 150 |
| Owner/operator: | Midwest Air Service, Inc. |
| Registration: | N7XC |
| MSN: | 15078099 |
| Year of manufacture: | 1976 |
| Total airframe hrs: | 3822 hours |
| Engine model: | CONTINENTAL O-200-A |
| Fatalities: | Fatalities: 0 / Occupants: 1 |
| Aircraft damage: | None |
| Category: | Serious incident |
| Location: | Chesterfield, MO -
 United States of America
|
| Phase: | En route |
| Nature: | Training |
| Departure airport: | (KSUS) |
| (KSUS) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
THE STUDENT SOLO PILOT RETURNED FROM A CROSS COUNTRY FLIGHT COMPLAINING OF HEADACHE, NAUSEA, AND DIFFICULTY WALKING. THE PILOT STATED THAT SHE HAD SMELLED EXHAUST FUMES, WAS NOT TAUGHT OF A POTENTIAL CONNECTION BETWEEN EXHAUST SMELLS AND CARBON MONOXIDE POISONING, AND CONTINUED THE FLIGHT. MEDICAL TESTS REVEALED ELEVATED CARBON MONOXIDE, WHICH REQUIRED 5 1/2 HOURS OF 100% OXYGEN TO REDUCE TO NORMAL LEVELS. POST-FLIGHT INSPECTION REVEALED A CRACK IN THE REPAIRED MUFFLER WHICH HAD BEEN INSTALLED 18 HOURS EARLIER. THE PRIVATE PILOT PRACTICAL TEST STANDARDS REQUIRE THAT AN APPLICANT EXHIBIT KNOWLEDGE OF SYMPTOMS, EFFECTS, AND CORRECTIVE ACTIONS FOR CARBON MONOXIDE POISONING.
Probable Cause: the cracked heater exhaust muffler which resulted from an improper repair. Factors were the physical impairment of the solo flight student as a result of her inadequate training concerning carbon monoxide hazards.
Accident investigation:
 |
|
Sources:
NTSB CHI95IA030
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 15-Mar-2024 12:52 | ASN Update Bot | Added |
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