AC68 pilot reports oil pressure loss and subsequent engine failure resulting in an emergency diversi...

Attributes
ACN	727635
Time
Date	200702
Local Time Of Day	1201 To 1800
Place
Locale Reference	navaid : zzz.vor
State Reference	US
Altitude	msl single value : 5200
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : zzz.tracon artcc : zlc.artcc
Operator	general aviation : personal
Make Model Name	Commander 680 All Series
Operating Under FAR Part	Part 91
Flight Phase	climbout : intermediate altitude
Route In Use	departure other
Flight Plan	None
Person 1
Affiliation	other
Function	flight crew : single pilot
Qualification	pilot : cfi pilot : commercial pilot : instrument pilot : multi engine
Experience	flight time last 90 days : 10 flight time total : 2200 flight time type : 650
ASRS Report	727635
Person 2
Affiliation	government : faa
Function	controller : departure
Events
Anomaly	aircraft equipment problem : critical airspace violation : entry altitude deviation : overshoot non adherence : far
Independent Detector	other flight crewa
Resolutory Action	controller : issued new clearance controller : issued alert flight crew : exited penetrated airspace flight crew : landed in emergency condition flight crew : declared emergency flight crew : diverted to another airport
Consequence	other
Supplementary
Problem Areas	Flight Crew Human Performance Aircraft
Primary Problem	Aircraft

Narrative:

On previous leg it was observed that right engine was leaking oil. For homebound leg; oil was topped off. We were monitoring performance carefully on departure from ZZZ and during initial climb. Prior to calling approach to request flight following we noticed drop in oil pressure on left engine. This situation distraction us from monitoring our altitude relative to class B airspace. When we made the call to approach we had already climbed through the 4000 ft floor of the class B. Approach advised us of the situation and requested we descend from 5200-4500 ft; which we did immediately. Upon reaching 4500 ft (less than 1 min) we passed into the next class B ring with a floor of 6000 ft. The left engine continued to lose oil pressure in the climb to 11500 ft. Temperatures stayed in the green. Several mins after leveling off we observed oil streaming from the left engine. We notified approach of our intention to land immediately at ZZZ1. On the descent into ZZZ; the left engine failed. It was feathered and secured. Because of unknown condition of right engine; we declared an emergency and landed without further complications. The right engine continued to operate normally until shutdown.

Original NASA ASRS Text

Title: AC68 PILOT REPORTS OIL PRESSURE LOSS AND SUBSEQUENT ENGINE FAILURE RESULTING IN AN EMERGENCY DIVERSION.

Narrative: ON PREVIOUS LEG IT WAS OBSERVED THAT R ENG WAS LEAKING OIL. FOR HOMEBOUND LEG; OIL WAS TOPPED OFF. WE WERE MONITORING PERFORMANCE CAREFULLY ON DEP FROM ZZZ AND DURING INITIAL CLB. PRIOR TO CALLING APCH TO REQUEST FLT FOLLOWING WE NOTICED DROP IN OIL PRESSURE ON L ENG. THIS SITUATION DISTR US FROM MONITORING OUR ALT RELATIVE TO CLASS B AIRSPACE. WHEN WE MADE THE CALL TO APCH WE HAD ALREADY CLBED THROUGH THE 4000 FT FLOOR OF THE CLASS B. APCH ADVISED US OF THE SITUATION AND REQUESTED WE DSND FROM 5200-4500 FT; WHICH WE DID IMMEDIATELY. UPON REACHING 4500 FT (LESS THAN 1 MIN) WE PASSED INTO THE NEXT CLASS B RING WITH A FLOOR OF 6000 FT. THE L ENG CONTINUED TO LOSE OIL PRESSURE IN THE CLB TO 11500 FT. TEMPS STAYED IN THE GREEN. SEVERAL MINS AFTER LEVELING OFF WE OBSERVED OIL STREAMING FROM THE L ENG. WE NOTIFIED APCH OF OUR INTENTION TO LAND IMMEDIATELY AT ZZZ1. ON THE DSCNT INTO ZZZ; THE L ENG FAILED. IT WAS FEATHERED AND SECURED. BECAUSE OF UNKNOWN CONDITION OF R ENG; WE DECLARED AN EMER AND LANDED WITHOUT FURTHER COMPLICATIONS. THE R ENG CONTINUED TO OPERATE NORMALLY UNTIL SHUTDOWN.

Data retrieved from NASA's ASRS site as of January 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.

AC68 pilot reports oil pressure loss and subsequent engine failure resulting in an emergency diversion.