<< >> NASA ASRS Report 772917, February 2008

A BE9 landed short of destination with low oil pressure and discovered the oil fill cap came loose in flight allowing oil to drain.

Attributes
ACN	772917
Time
Date	200802
Place
Locale Reference	airport : zzz.airport
State Reference	US
Altitude	msl single value : 7500
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zzz.artcc
Operator	general aviation : corporate
Make Model Name	Beechcraft Twin Turboprop Jet Undifferentiated or Other Model
Operating Under FAR Part	Part 91
Flight Phase	cruise : level
Flight Plan	None
Person 1
Affiliation	company : corporate
Function	flight crew : single pilot
Qualification	pilot : atp pilot : multi engine
Experience	flight time last 90 days : 100 flight time total : 15000 flight time type : 400
ASRS Report	772917
Events
Anomaly	aircraft equipment problem : less severe
Independent Detector	other flight crewa
Resolutory Action	flight crew : landed as precaution
Consequence	other other
Supplementary
Problem Areas	FAA Aircraft Company
Primary Problem	Aircraft

Narrative:

While en route from ZZZ1 to ZZZ2; the left engine began to lose oil pressure. As pressure became critical (40 psi) I elected to shut down the engine before any damage was caused. After landing safely and with no incident or damage to property or to the aircraft; inspected the left engine and found the oil filler cap worked itself loose. Called the maintenance chief and told him of our problem. I was informed that there was a service bulletin out on this engine about oil filler caps coming loose in-flight and losing oil. He said he would inspect all king air filler caps in the fleet to ensure this would not happen again.

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Original NASA ASRS Text

Title: A BE9 LANDED SHORT OF DEST WITH LOW OIL PRESSURE AND DISCOVERED THE OIL FILL CAP CAME LOOSE IN FLT ALLOWING OIL TO DRAIN.

Narrative: WHILE ENRTE FROM ZZZ1 TO ZZZ2; THE L ENG BEGAN TO LOSE OIL PRESSURE. AS PRESSURE BECAME CRITICAL (40 PSI) I ELECTED TO SHUT DOWN THE ENG BEFORE ANY DAMAGE WAS CAUSED. AFTER LNDG SAFELY AND WITH NO INCIDENT OR DAMAGE TO PROPERTY OR TO THE ACFT; INSPECTED THE L ENG AND FOUND THE OIL FILLER CAP WORKED ITSELF LOOSE. CALLED THE MAINT CHIEF AND TOLD HIM OF OUR PROB. I WAS INFORMED THAT THERE WAS A SVC BULLETIN OUT ON THIS ENG ABOUT OIL FILLER CAPS COMING LOOSE INFLT AND LOSING OIL. HE SAID HE WOULD INSPECT ALL KING AIR FILLER CAPS IN THE FLEET TO ENSURE THIS WOULD NOT HAPPEN AGAIN.

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