Loss of engine power during ground reference training maneuvers resulting in a forced off airport la...

Attributes
ACN	285753
Time
Date	199410
Day	Mon
Place
Locale Reference	airport : 9k4
State Reference	MO
Altitude	agl bound lower : 0 agl bound upper : 600
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	general aviation : instructional
Make Model Name	Small Aircraft, Low Wing, 1 Eng, Retractable Gear
Flight Phase	cruise other cruise other other
Flight Plan	None
Person 1
Affiliation	Other
Function	instruction : instructor
Qualification	pilot : commercial pilot : cfi pilot : instrument
Experience	flight time last 90 days : 250 flight time total : 1200 flight time type : 50
ASRS Report	285753
Person 2
Affiliation	Other
Function	instruction : trainee
Qualification	pilot : private
Events
Anomaly	aircraft equipment problem : critical other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : unspecified other flight crewa
Resolutory Action	flight crew : declared emergency other
Consequence	Other
Supplementary
Primary Problem	Aircraft

Narrative:

Student and I were at an altitude of 500 ft AGL executing commercial ground reference maneuvers when the engine RPM increased despite the propeller control on the beech sierra. After a check of the oil pressure, or lack thereof, there was /0/ pressure and the decision to land was made. I took control of the aircraft, pulled the throttle to idle, executed a left 150 degree turn towards an acceptable field. In the turn the gear was extended and on short final, full flaps. We crossed a tree line by about 30 ft and landed in a pasture field. We stopped just short of a barbed wire fence and no damage was done to the aircraft other than the engine, which was still turning when we came to a complete stop. We pulled mixture and shut down engine. No injuries whatsoever. After taking the cowling off, we noticed that the oil screen bolt had backed out of the engine block because it was not safety-wired or properly torqued down. This situation could have been avoided if the mechanic had directly supervised the work done on the engine.

Original NASA ASRS Text

Title: LOSS OF ENG PWR DURING GND REF TRAINING MANEUVERS RESULTING IN A FORCED OFF ARPT LNDG.

Narrative: STUDENT AND I WERE AT AN ALT OF 500 FT AGL EXECUTING COMMERCIAL GND REF MANEUVERS WHEN THE ENG RPM INCREASED DESPITE THE PROP CTL ON THE BEECH SIERRA. AFTER A CHK OF THE OIL PRESSURE, OR LACK THEREOF, THERE WAS /0/ PRESSURE AND THE DECISION TO LAND WAS MADE. I TOOK CTL OF THE ACFT, PULLED THE THROTTLE TO IDLE, EXECUTED A L 150 DEG TURN TOWARDS AN ACCEPTABLE FIELD. IN THE TURN THE GEAR WAS EXTENDED AND ON SHORT FINAL, FULL FLAPS. WE CROSSED A TREE LINE BY ABOUT 30 FT AND LANDED IN A PASTURE FIELD. WE STOPPED JUST SHORT OF A BARBED WIRE FENCE AND NO DAMAGE WAS DONE TO THE ACFT OTHER THAN THE ENG, WHICH WAS STILL TURNING WHEN WE CAME TO A COMPLETE STOP. WE PULLED MIXTURE AND SHUT DOWN ENG. NO INJURIES WHATSOEVER. AFTER TAKING THE COWLING OFF, WE NOTICED THAT THE OIL SCREEN BOLT HAD BACKED OUT OF THE ENG BLOCK BECAUSE IT WAS NOT SAFETY-WIRED OR PROPERLY TORQUED DOWN. THIS SIT COULD HAVE BEEN AVOIDED IF THE MECH HAD DIRECTLY SUPERVISED THE WORK DONE ON THE ENG.

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.

Loss of engine power during ground reference training maneuvers resulting in a forced off airport landing.