ASN Wikibase Occurrence # 42152
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| Date: | Friday 30 March 1990 |
| Time: | 13:00 |
| Type: |  Cessna 152 |
| Owner/operator: | Maria Gousio |
| Registration: | N4671M |
| MSN: | 15284476 |
| Total airframe hrs: | 5223 hours |
| Engine model: | LYCOMING O-235-L2C |
| Fatalities: | Fatalities: 1 / Occupants: 2 |
| Aircraft damage: | Destroyed |
| Category: | Accident |
| Location: | Oberlin, OH -
 United States of America
|
| Phase: | En route |
| Nature: | Training |
| Departure airport: | Elyria, OH (1G1) |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
WITNESSES REPORTED THE AIRPLANE WAS IN A WIDE SPIRAL, THEN IT SUDDENLY ENTERED A DIVE & CRASHED. ONE WITNESS, WHO WAS OUTSIDE & AWAY FROM STRUCTURES, REPORTED THE ENGINE WAS SPUTTERING, JUST BEFORE IMPACT. THE DUAL STUDENT RETAINED ONLY A FRAGMENTED MEMORY OF THE DAY OF THE ACDNT. HOWEVER, HE REMEMBERED THAT THE INSTRUCTOR TOOK CONTROL OF THE AIRPLANE, WHEN THE ENGINE BEGAN TO SPUTTER DURING A POWER APPLICATION. ALSO, HE REPORTED THAT CARBURETOR HEAT HAD BEEN USED PRIOR TO APPLICATION OF POWER. A REVIEW OF THE INSTRUCTOR & STUDENT LOGBOOKS SHOWED THAT THERE HAD BEEN INSTRUCTION IN EMERGENCY PROCEDURES DURING THE PREVIOUS PERIOD OF INSTRUCTION. NO PREIMPACT PART FAILURE WAS FOUND DURING THE INVESTIGATION. THE ENGINE WAS MOUNTED ON A TEST STAND & OPERATED TO 1000 RPM. THE TEMPERATURE & DEW POINT WERE REPORTED TO BE 54 & 47 DEG, RESPECTIVELY. ACCORDING TO ICING PROBABILITY CHARTS, CONDITIONS WERE CONDUCIVE TO SERIOUS ICING AT CRUISE POWER. CAUSE: IMPROPER USE OF CARBURETOR HEAT BY THE DUAL STUDENT, CARBURETOR ICE, INADEQUATE SUPERVISION TO CORRECT THE SITUATION BY THE INSTRUCTOR PILOT (CFI), AND FAILURE OF THE CFI TO MAINTAIN ADEQUATE AIRSPEED, WHICH RESULTED IN A STALL. CARBURETOR ICING CONDITION WAS A RELATED FACTOR.
Sources:
NTSB: http://www.ntsb.gov/ntsb/brief.asp?ev_id=20001212X22681
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 24-Oct-2008 10:30 | ASN archive | Added |
| 21-Dec-2016 19:24 | ASN Update Bot | Updated [Time, Damage, Category, Investigating agency] |
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