BE90 pilot experienced low oil pressure at 12;000 feet; shut down the affected engine and informed A...

Attributes
ACN	866306
Time
Date	200912
Local Time Of Day	0601-1200
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Flight Conditions	IMC
Light	Daylight
Aircraft 1
Make Model Name	King Air C90 E90
Operating Under FAR Part	Part 91
Flight Phase	Initial Approach
Flight Plan	IFR
Component
Aircraft Component	Powerplant Lubrication System
Person 1
Function	Captain Pilot Flying
Qualification	Flight Crew Air Transport Pilot (ATP) Flight Crew Flight Instructor
Experience	Flight Crew Last 90 Days 30 Flight Crew Total 6500 Flight Crew Type 30
Events
Anomaly	Aircraft Equipment Problem Critical

Narrative:

Approximately 25 minutes out from ZZZ; the left engine started losing oil pressure at cruise altitude of 12;000 ft MSL. Secured left engine and notified ATC. ATC advised number 1 for the RNAV (GPS) runway 21 approach; descend to 4;000 ft MSL. Traffic at ZZZ was light and little to no traffic was heard on the frequency. At 4;000 ft MSL; OAT was -4C; the aircraft was picking up ice. Approximately 5 minutes before reaching the IAF; a new controller took over the sector frequency. Two and one half minutes before the IAF; the new controller advised number 2 for the approach and we were to enter the published holding pattern. We advised that we were on one engine and picking up ice and requesting priority sequencing. The controller advised that she was unable unless we declared an emergency. We declared an emergency and landed without incident.

Original NASA ASRS Text

Title: BE90 pilot experienced low oil pressure at 12;000 feet; shut down the affected engine and informed ATC. During approach holding instructions are issued and ultimately rescinded when the reporter complains then declares an emergency at the Controller's suggestion.

Narrative: Approximately 25 minutes out from ZZZ; the left engine started losing oil pressure at cruise altitude of 12;000 FT MSL. Secured left engine and notified ATC. ATC advised number 1 for the RNAV (GPS) Runway 21 Approach; descend to 4;000 FT MSL. Traffic at ZZZ was light and little to no traffic was heard on the frequency. At 4;000 FT MSL; OAT was -4C; the aircraft was picking up ice. Approximately 5 minutes before reaching the IAF; a new Controller took over the sector frequency. Two and one half minutes before the IAF; the new Controller advised number 2 for the approach and we were to enter the published holding pattern. We advised that we were on one engine and picking up ice and requesting priority sequencing. The Controller advised that she was unable unless we declared an emergency. We declared an emergency and landed without incident.

Data retrieved from NASA's ASRS site as of April 2012 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.

BE90 pilot experienced low oil pressure at 12;000 feet; shut down the affected engine and informed ATC. During approach holding instructions are issued and ultimately rescinded when the reporter complains then declares an emergency at the controller's suggestion.