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Pilot/mechanic of M20 declares emergency when over leaned engine begins to misfire. Determines cause and cancels emergency.
| Attributes | |
| ACN | 785215 |
| Time | |
| Date | 200804 |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Altitude | agl single value : 1500 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tower : zzz.tower |
| Operator | general aviation : personal |
| Make Model Name | M-20 Series Undifferentiated or Other Model |
| Operating Under FAR Part | Part 91 |
| Flight Phase | cruise : level |
| Flight Plan | None |
| Person 1 | |
| Affiliation | other |
| Function | flight crew : single pilot |
| Qualification | pilot : private pilot : instrument technician : airframe technician : powerplant |
| Experience | flight time last 90 days : 100 flight time total : 1600 flight time type : 200 |
| ASRS Report | 785215 |
| Events | |
| Anomaly | aircraft equipment problem : less severe non adherence : published procedure |
| Independent Detector | other flight crewa |
| Resolutory Action | flight crew : overcame equipment problem flight crew : declared emergency |
| Consequence | other |
| Supplementary | |
| Problem Areas | Aircraft Flight Crew Human Performance |
| Primary Problem | Flight Crew Human Performance |
Narrative:
Departing ZZZ about 7 mi from airport I over-leaned engine and developed a bad misfire of the engine. I turned back and declared an emergency but before I landed; the misfire went away. As a mechanic I determined the aircraft was now airworthy because of the condition of the running and gauges and cancelled the emergency. My analysis was accurate in the fact that I was able to continue the flight with no problem and in the next 3 days flew with no problems or maintenance.
Original NASA ASRS Text
Title: PLT/MECHANIC OF M20 DECLARES EMERGENCY WHEN OVER LEANED ENGINE BEGINS TO MISFIRE. DETERMINES CAUSE AND CANCELS EMERGENCY.
Narrative: DEPARTING ZZZ ABOUT 7 MI FROM ARPT I OVER-LEANED ENG AND DEVELOPED A BAD MISFIRE OF THE ENG. I TURNED BACK AND DECLARED AN EMER BUT BEFORE I LANDED; THE MISFIRE WENT AWAY. AS A MECH I DETERMINED THE ACFT WAS NOW AIRWORTHY BECAUSE OF THE CONDITION OF THE RUNNING AND GAUGES AND CANCELLED THE EMER. MY ANALYSIS WAS ACCURATE IN THE FACT THAT I WAS ABLE TO CONTINUE THE FLT WITH NO PROB AND IN THE NEXT 3 DAYS FLEW WITH NO PROBS OR MAINT.
Data retrieved from NASA's ASRS site as of May 2009 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.