Loss of oil pressure in #1 engine forces an in-flight shutdown and diversion to another airport for ...

Attributes
ACN	620044
Time
Date	200406
Day	Sat
Place
Locale Reference	airport : zzz.airport
State Reference	US
Altitude	msl single value : 3500
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : zzz.tracon
Operator	common carrier : air taxi
Make Model Name	Helicopter
Operating Under FAR Part	Part 135
Navigation In Use	other
Flight Phase	cruise : level
Flight Plan	VFR
Person 1
Affiliation	company : air taxi
Function	flight crew : single pilot
Qualification	pilot : atp
Experience	flight time last 90 days : 50 flight time total : 7500 flight time type : 90
ASRS Report	620044
Person 2
Affiliation	government : faa
Function	controller : approach
Events
Anomaly	aircraft equipment problem : critical other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : oil press. gauge other flight crewa
Resolutory Action	flight crew : declared emergency flight crew : diverted to another airport
Consequence	other
Supplementary
Problem Areas	Aircraft Flight Crew Human Performance
Primary Problem	Aircraft

Narrative:

While in the final phases of a passenger xfer from ZZZ1 to ZZZ2 at 3500 ft MSL, engine oil pressure on the #1 engine began to fluctuate from zero bar to +4.0 bar. I notified cabin crew that I may be required to shut down the #1 engine. I notified ZZZ approach of the situation and the requirement to divert to ZZZ. I declared an emergency and requested crash rescue be on standby at ZZZ. There were no torque deviations, nor illumination of the 'engine oil 1 P' light. As the fluctuations did not subside, I utilized the pilot's emergency checklist to confirm and perform the emergency engine shutdown. After identing and retarding #1 to idle the fluctuations ceased and stabilized at +2.0 bar. After making landfall the #1 engine was secured, and a landing was made on the 24 runway at ZZZ.

Original NASA ASRS Text

Title: LOSS OF OIL PRESSURE IN #1 ENG FORCES AN INFLT SHUTDOWN AND DIVERSION TO ANOTHER ARPT FOR PLT OF BK117.

Narrative: WHILE IN THE FINAL PHASES OF A PAX XFER FROM ZZZ1 TO ZZZ2 AT 3500 FT MSL, ENG OIL PRESSURE ON THE #1 ENG BEGAN TO FLUCTUATE FROM ZERO BAR TO +4.0 BAR. I NOTIFIED CABIN CREW THAT I MAY BE REQUIRED TO SHUT DOWN THE #1 ENG. I NOTIFIED ZZZ APCH OF THE SIT AND THE REQUIREMENT TO DIVERT TO ZZZ. I DECLARED AN EMER AND REQUESTED CRASH RESCUE BE ON STANDBY AT ZZZ. THERE WERE NO TORQUE DEVS, NOR ILLUMINATION OF THE 'ENG OIL 1 P' LIGHT. AS THE FLUCTUATIONS DID NOT SUBSIDE, I UTILIZED THE PLT'S EMER CHKLIST TO CONFIRM AND PERFORM THE EMER ENG SHUTDOWN. AFTER IDENTING AND RETARDING #1 TO IDLE THE FLUCTUATIONS CEASED AND STABILIZED AT +2.0 BAR. AFTER MAKING LANDFALL THE #1 ENG WAS SECURED, AND A LNDG WAS MADE ON THE 24 RWY AT ZZZ.

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 oil pressure in #1 engine forces an in-flight shutdown and diversion to another airport for pilot of BK117.