|37000 Feet||Browse and search NASA's
Aviation Safety Reporting System
|Local Time Of Day||0601 To 1200|
|Locale Reference||atc facility : ccr|
|Altitude||agl bound lower : 0|
agl bound upper : 3500
|Controlling Facilities||tracon : suu|
tower : ccr
|Operator||general aviation : instructional|
|Make Model Name||Small Aircraft, High Wing, 1 Eng, Retractable Gear|
|Flight Phase||cruise other|
|Function||instruction : instructor|
oversight : pic
|Qualification||pilot : cfi|
pilot : commercial
pilot : instrument
|Experience||flight time last 90 days : 60|
flight time total : 3500
|Function||instruction : trainee|
|Qualification||pilot : student|
|Anomaly||aircraft equipment problem : critical|
|Independent Detector||other flight crewa|
|Resolutory Action||flight crew : declared emergency|
none taken : unable
Normal day (VFR) performed normal preflight. Flight was intended to recertify another pilot. Left davis university airport, ca, and proceeded to buchanan field. Aircraft had just come out of 100 hour inspection. Departed concord. Leveled off 3500'. Contacted travis approach for radar service. Student initiated cruise checklist. I watched as she continued to run the checklist. When the propeller control was retarded for desired RPM, the propeller raced out of control. Mp was reduced and an attempt to regain some control on propeller with propeller control. The attempt was ineffective. The oil pressure gauge was just reaching 0. Oil temperature was normal. I contacted travis approach and informed them of engine trouble and would need to land on the air base (I declared an emergency). I reassessed distance and wind conditions and decided on concord as best choice, informed travis of my intentions and turned back toward concord, setting up my glide with engine still running. Approximately 2 mins passed and I extended the landing gear. Approximately 30 seconds later the engine began to shudder violently so I shut down the engine. I was instructed to contact concord tower. Continued glide to normal (uneventful) landing. Later the firemen and a mechanic told me they detected a finger tight line connector on the oil cooler line.
Original NASA ASRS Text
Title: GA SMA LOST ENGINE OIL AT TOC. INSTRUCTOR PLT RETURNED TO DEP ARPT.
Narrative: NORMAL DAY (VFR) PERFORMED NORMAL PREFLT. FLT WAS INTENDED TO RECERTIFY ANOTHER PLT. LEFT DAVIS UNIVERSITY ARPT, CA, AND PROCEEDED TO BUCHANAN FIELD. ACFT HAD JUST COME OUT OF 100 HR INSPECTION. DEPARTED CONCORD. LEVELED OFF 3500'. CONTACTED TRAVIS APCH FOR RADAR SVC. STUDENT INITIATED CRUISE CHKLIST. I WATCHED AS SHE CONTINUED TO RUN THE CHKLIST. WHEN THE PROP CTL WAS RETARDED FOR DESIRED RPM, THE PROP RACED OUT OF CTL. MP WAS REDUCED AND AN ATTEMPT TO REGAIN SOME CTL ON PROP WITH PROP CTL. THE ATTEMPT WAS INEFFECTIVE. THE OIL PRESSURE GAUGE WAS JUST REACHING 0. OIL TEMP WAS NORMAL. I CONTACTED TRAVIS APCH AND INFORMED THEM OF ENG TROUBLE AND WOULD NEED TO LAND ON THE AIR BASE (I DECLARED AN EMER). I REASSESSED DISTANCE AND WIND CONDITIONS AND DECIDED ON CONCORD AS BEST CHOICE, INFORMED TRAVIS OF MY INTENTIONS AND TURNED BACK TOWARD CONCORD, SETTING UP MY GLIDE WITH ENG STILL RUNNING. APPROX 2 MINS PASSED AND I EXTENDED THE LNDG GEAR. APPROX 30 SECS LATER THE ENG BEGAN TO SHUDDER VIOLENTLY SO I SHUT DOWN THE ENG. I WAS INSTRUCTED TO CONTACT CONCORD TWR. CONTINUED GLIDE TO NORMAL (UNEVENTFUL) LNDG. LATER THE FIREMEN AND A MECH TOLD ME THEY DETECTED A FINGER TIGHT LINE CONNECTOR ON THE OIL COOLER LINE.
Data retrieved from NASA's ASRS site as of August 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.