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A CFI's report on an in-flight engine stoppage on his beech 23 sun downer that was overcome by pumping the throttle for a restart while making an emergency landing near roa, va.
| Attributes | |
| ACN | 537615 |
| Time | |
| Date | 200202 |
| Day | Tue |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : roa.airport |
| State Reference | VA |
| Altitude | msl single value : 4100 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : roa.tracon |
| Operator | general aviation : personal |
| Make Model Name | Sundowner 23 |
| Operating Under FAR Part | Part 91 |
| Flight Phase | other |
| Flight Plan | None |
| Person 1 | |
| Affiliation | other |
| Function | instruction : instructor |
| Qualification | pilot : cfi pilot : atp pilot : multi engine |
| Experience | flight time last 90 days : 300 flight time total : 2620 flight time type : 1200 |
| ASRS Report | 537615 |
| Person 2 | |
| Affiliation | other |
| Function | instruction : trainee |
| Events | |
| Anomaly | aircraft equipment problem : critical other anomaly other |
| Independent Detector | other flight crewa |
| Resolutory Action | controller : provided flight assist flight crew : overcame equipment problem flight crew : declared emergency flight crew : landed in emergency condition |
| Consequence | other other |
| Supplementary | |
| Problem Areas | Aircraft Flight Crew Human Performance |
| Primary Problem | Aircraft |
Narrative:
Conducting part 91 flight training for local public high school system with student, practicing power off (approach to landing) stalls, airplane stalled and when recovery attempted, ie, full power applied, engine quit. I (CFI) took over control of aircraft and performed emergency engine out checklist, to no avail. After second attempt to restart was unsuccessful, called roa approach control and declared a mayday, squawked 7700. Now at 2500 ft MSL (1300 ft AGL) heading for a grass field, tried procedures not included in engine out/restart checklist: pumped throttle and engine fired/restarted. Proceeded to roa while gaining as much altitude as possible, spiraled down and landed without incident. ATC (roa approach) provided assistance and suggestions during emergency, provided priority handling over other aircraft including clearance to land any runway. Aircraft subsequently inspected by maintenance found limited amount of debris/water in carburetor bowl, but best explanation of problem was due to vapor lock in mechanical fuel pump with electric fuel boost pump on. Aircraft returned to service. I have advised other CFI's at the school of the problem and subsequent unsuccessful and successful restart procedures for their future use if necessary.
Original NASA ASRS Text
Title: A CFI'S RPT ON AN INFLT ENG STOPPAGE ON HIS BEECH 23 SUN DOWNER THAT WAS OVERCOME BY PUMPING THE THROTTLE FOR A RESTART WHILE MAKING AN EMER LNDG NEAR ROA, VA.
Narrative: CONDUCTING PART 91 FLT TRAINING FOR LCL PUBLIC HIGH SCHOOL SYS WITH STUDENT, PRACTICING PWR OFF (APCH TO LNDG) STALLS, AIRPLANE STALLED AND WHEN RECOVERY ATTEMPTED, IE, FULL PWR APPLIED, ENG QUIT. I (CFI) TOOK OVER CTL OF ACFT AND PERFORMED EMER ENG OUT CHKLIST, TO NO AVAIL. AFTER SECOND ATTEMPT TO RESTART WAS UNSUCCESSFUL, CALLED ROA APCH CTL AND DECLARED A MAYDAY, SQUAWKED 7700. NOW AT 2500 FT MSL (1300 FT AGL) HEADING FOR A GRASS FIELD, TRIED PROCS NOT INCLUDED IN ENG OUT/RESTART CHKLIST: PUMPED THROTTLE AND ENG FIRED/RESTARTED. PROCEEDED TO ROA WHILE GAINING AS MUCH ALT AS POSSIBLE, SPIRALED DOWN AND LANDED WITHOUT INCIDENT. ATC (ROA APCH) PROVIDED ASSISTANCE AND SUGGESTIONS DURING EMER, PROVIDED PRIORITY HANDLING OVER OTHER ACFT INCLUDING CLRNC TO LAND ANY RWY. ACFT SUBSEQUENTLY INSPECTED BY MAINT FOUND LIMITED AMOUNT OF DEBRIS/WATER IN CARB BOWL, BUT BEST EXPLANATION OF PROB WAS DUE TO VAPOR LOCK IN MECHANICAL FUEL PUMP WITH ELECTRIC FUEL BOOST PUMP ON. ACFT RETURNED TO SVC. I HAVE ADVISED OTHER CFI'S AT THE SCHOOL OF THE PROB AND SUBSEQUENT UNSUCCESSFUL AND SUCCESSFUL RESTART PROCS FOR THEIR FUTURE USE IF NECESSARY.
Data retrieved from NASA's ASRS site as of July 2007 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.