A PA31-310 pilot reported engine problems to ZDV, declared an emergency, and landed at publication.

Attributes
ACN	574452
Time
Date	200302
Day	Wed
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : zdv.artcc
State Reference	CO
Altitude	msl single value : 2000
Environment
Flight Conditions	Mixed
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zdv.artcc
Operator	common carrier : air taxi
Make Model Name	PA-31 Navajo Chieftan/Mojave/Navajo T1020
Operating Under FAR Part	Part 135
Navigation In Use	other vortac
Flight Phase	cruise : level
Route In Use	enroute : on vectors
Flight Plan	IFR
Person 1
Affiliation	company : air taxi
Function	flight crew : single pilot
Qualification	pilot : multi engine pilot : atp
Experience	flight time last 90 days : 50 flight time total : 1800 flight time type : 500
ASRS Report	574452
Person 2
Affiliation	government : faa
Function	controller : radar
Events
Anomaly	other anomaly other
Independent Detector	other flight crewa
Resolutory Action	flight crew : declared emergency flight crew : diverted to another airport flight crew : landed in emergency condition
Consequence	other
Supplementary
Problem Areas	Aircraft Maintenance Human Performance
Primary Problem	Aircraft

Narrative:

An engine failure on the right engine occurred at FL200. No abnormal engine indications were noted and no engine limitations were exceeded. There was still propeller rotation after the failure occurred. The propeller was feathered and the engine was secured. As a precaution, the firewall fuel valve on the right engine was closed. An emergency was declared. Received vectors to publication. Due to the situation, publication was deemed as the closest suitable airfield for an emergency landing because of availability of airport rescue equipment and medical facilities. Prior to declaring the emergency, an engine restart was attempted with no effect. Instrument conditions (500 ft, broken ceiling) at publication required an ILS approach. A single engine landing was accomplished without further incident. After a maintenance inspection, it was determined that failure of the engine-driven fuel pump resulted in oil loss, causing turbocharger failure. There was a minimal amount of oil left in the oil system which allowed adequate oil pressure to be indicated. No abnormal fuel pressure was noted, due to the stand-by electric boost pumps operating.

Original NASA ASRS Text

Title: A PA31-310 PLT RPTED ENG PROBS TO ZDV, DECLARED AN EMER, AND LANDED AT PUB.

Narrative: AN ENG FAILURE ON THE R ENG OCCURRED AT FL200. NO ABNORMAL ENG INDICATIONS WERE NOTED AND NO ENG LIMITATIONS WERE EXCEEDED. THERE WAS STILL PROP ROTATION AFTER THE FAILURE OCCURRED. THE PROP WAS FEATHERED AND THE ENG WAS SECURED. AS A PRECAUTION, THE FIREWALL FUEL VALVE ON THE R ENG WAS CLOSED. AN EMER WAS DECLARED. RECEIVED VECTORS TO PUB. DUE TO THE SIT, PUB WAS DEEMED AS THE CLOSEST SUITABLE AIRFIELD FOR AN EMER LNDG BECAUSE OF AVAILABILITY OF ARPT RESCUE EQUIP AND MEDICAL FACILITIES. PRIOR TO DECLARING THE EMER, AN ENG RESTART WAS ATTEMPTED WITH NO EFFECT. INST CONDITIONS (500 FT, BROKEN CEILING) AT PUB REQUIRED AN ILS APCH. A SINGLE ENG LNDG WAS ACCOMPLISHED WITHOUT FURTHER INCIDENT. AFTER A MAINT INSPECTION, IT WAS DETERMINED THAT FAILURE OF THE ENG-DRIVEN FUEL PUMP RESULTED IN OIL LOSS, CAUSING TURBOCHARGER FAILURE. THERE WAS A MINIMAL AMOUNT OF OIL LEFT IN THE OIL SYS WHICH ALLOWED ADEQUATE OIL PRESSURE TO BE INDICATED. NO ABNORMAL FUEL PRESSURE WAS NOTED, DUE TO THE STAND-BY ELECTRIC BOOST PUMPS OPERATING.

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.