ASN Wikibase Occurrence # 44514
This information is added by users of ASN. Neither ASN nor the Flight Safety Foundation are responsible for the completeness or correctness of this information.
If you feel this information is incomplete or incorrect, you can submit corrected information.
| Date: | Saturday 30 April 2005 |
| Time: | 20:11 |
| Type: |  Cessna 170B |
| Owner/operator: | Private |
| Registration: | N6352Y |
| MSN: | 25326 |
| Total airframe hrs: | 5371 hours |
| Fatalities: | Fatalities: 1 / Occupants: 1 |
| Aircraft damage: | Destroyed |
| Category: | Accident |
| Location: | Portland, OR -
 United States of America
|
| Phase: | En route |
| Nature: | Private |
| Departure airport: | Pullman, WA (PUW) |
| Vancouver, WA (VUO) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The airplane was returning to its home airport when the pilot became incapacitated by carbon monoxide fumes from the airplanes engine muffler heat exchanger [the heat control knob was found "On"]. During the last 15 minutes of flight, the radar data shows the airplane flying several meandering 360 degree turns before impacting terrain. Postimpact examination of the engine's muffler revealed a crack around the entire circumference just aft of it's forward flange. The airplane's last annual inspection was completed on February 1, 2005. The FAA, in Federal Aviation Regulation, Part 43: Maintenance, Preventive maintenance, Rebuilding, and Alteration, Appendix D, provides guidelines for an airplane's annual inspection. Section (d) (8) Exhaust stacks--for cracks, defects, and improper attachment. The airplane's manufacturer also provides a checklist for an annual inspection in the aircraft's Service Manual. In the section for the Engine Compartment, #12. Exhaust system for security, leaks, cracks, and burned-out spots. Refer to Paragraph 12-74 [Inspection of the exhaust system].
Probable Cause: The pilot's inability to control the airplane due to his incapacitation (carbon monoxide poisoning) from a deteriorated engine exhaust muffler. A contributing factor was the inadequate annual inspection by other maintenance personnel.
Accident investigation:
 |
|
Sources:
NTSB: https://www.ntsb.gov/_layouts/ntsb.aviation/brief.aspx?ev_id=20050504X00552&key=1
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 28-Oct-2008 00:45 | ASN archive | Added |
| 21-Dec-2016 19:24 | ASN Update Bot | Updated [Time, Damage, Category, Investigating agency] |
| 06-Dec-2017 08:08 | ASN Update Bot | Updated [Source, Narrative] |
Corrections or additions? ... Edit this accident description
The Aviation Safety Network is an exclusive service provided by:
Quick Links:
| ASN Home | Send Correction / Feedback |
| FSF Home | Disclaimer | Copyright |
| Contact Us | Privacy Policy |
| Press / Media |
CONNECT WITH US:
©2024 Flight Safety Foundation