ASN Wikibase Occurrence # 294359
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| Date: | Sunday 14 November 2004 |
| Time: | 15:37 LT |
| Type: |  Cessna 172N |
| Owner/operator: | Private |
| Registration: | N75776 |
| MSN: | 17267942 |
| Year of manufacture: | 1976 |
| Engine model: | Lycoming O-320 |
| Fatalities: | Fatalities: 0 / Occupants: 1 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Wilmington, North Carolina -
 United States of America
|
| Phase: | Unknown |
| Nature: | Private |
| Departure airport: | Wilmington-New Hanover County International Airport, NC (ILM/KILM) |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
During cruise flight, the student pilot detected an odor in the cockpit, then she saw smoke coming from a seam in the top of the instrument panel. The student pilot declared an emergency, proceeded toward the airport, and the smoke continued. She decided to land the airplane in the field. During landing roll, the airplane rolled into a drainage ditch and nosed over. Examination revealed the "audio amp" circuit breaker was found popped. Examination of the wiring behind the instrument panel revealed no visible evidence of burning. The circuit breaker was reset and the electrical master and avionics were turned on, and the ARC MX-300 radio in the Comm 2 position did not function. No smoke was observed and no odor was detected. The radio was removed for examination, and no evidence of burning was observed inside the radio case. A review of the Pilot's Operating Handbook for the Cessna 172N revealed no specific procedures for smoke in the cockpit. In Section 3, "Emergency Procedures, Fires," the handbook states, "The initial indication of an electrical fire is usually the odor of burning insulation. The checklist for this problem should result in elimination of the fire." According to the handbook, the checklist procedures for "Electrical Fire In Flight" are: "(1) Master Switch -- OFF. (2) All Other Switches (except ignition switch) -- OFF. (3) Vents/Cabin Air/Heat -- CLOSED. (4) Fire Extinguisher -- ACTIVATE (if available). If the fire appears out and electrical power is necessary for continuance of flight: (5) Master Switch -- ON. (6) Circuit Breakers -- CHECK for faulty circuit, do not reset. (7) Radio/Electrical Switches -- ON one at a time, with delay after each until short circuit is localized. (8) Vents/Cabin Air/Heat -- OPEN when it is ascertained that fire is completely extinguished."
Probable Cause: The student pilot's failure to recognize the proper emergency procedure, which resulted in a precautionary landing in a field and subsequent collision with a ditch. Factors were the undetermined electrical malfunction, smoke in the cockpit, and the student pilot's lack of experience.
Accident investigation:
 |
|
Sources:
NTSB ATL05CA024
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 11-Oct-2022 15:46 | ASN Update Bot | Added |
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