Pilot of an small transport reciprocating twin experienced right engine failure during high altitude cruise and requested the nearest airport for an emergency landing. The engine was subsequently restarted and the reporter returned to his origin airport for landing due to both engines running rough.

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Attributes
ACN	435768
Time
Date	199904
Day	Fri
Local Time Of Day	0601 To 1200
Place
State Reference	NM
Altitude	msl single value : 23000
Environment
Flight Conditions	IMC
Weather Elements	Ice
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zab.artcc
Operator	general aviation : personal
Make Model Name	Small Transport, Low Wing, 2 Recip Eng
Operating Under FAR Part	Part 91
Navigation In Use	other vortac
Flight Phase	cruise : level
Flight Plan	IFR
Person 1
Affiliation	other
Function	flight crew : single pilot
Qualification	pilot : atp pilot : multi engine
Experience	flight time last 90 days : 35 flight time total : 6200 flight time type : 1500
ASRS Report	435768
Person 2
Affiliation	government : faa
Function	controller : radar
Qualification	controller : radar
Events
Anomaly	aircraft equipment problem : critical inflight encounter : weather
Independent Detector	other flight crewa
Resolutory Action	controller : issued new clearance flight crew : overcame equipment problem flight crew : declared emergency flight crew : landed as precaution
Consequence	other
Supplementary
Problem Areas	Aircraft Weather
Primary Problem	Aircraft

Narrative:

On IFR flight plan to dca at cruise, right engine quit. Performed single engine procedures, reported to ATC, requested nearest airport, stabilized aircraft, and restarted engine. Both engines running rough for periods. Requested return to abq. Probable cause was air filter icing and failure to use alternate air source. Automatic induction bypass system being checked. Aircraft flight manual being reviewed for icing procedures.

Original NASA ASRS Text

Title: PLT OF AN SMT RECIPROCATING TWIN EXPERIENCED R ENG FAILURE DURING HIGH ALT CRUISE AND REQUESTED THE NEAREST ARPT FOR AN EMER LNDG. THE ENG WAS SUBSEQUENTLY RESTARTED AND THE RPTR RETURNED TO HIS ORIGIN ARPT FOR LNDG DUE TO BOTH ENGS RUNNING ROUGH.

Narrative: ON IFR FLT PLAN TO DCA AT CRUISE, R ENG QUIT. PERFORMED SINGLE ENG PROCS, RPTED TO ATC, REQUESTED NEAREST ARPT, STABILIZED ACFT, AND RESTARTED ENG. BOTH ENGS RUNNING ROUGH FOR PERIODS. REQUESTED RETURN TO ABQ. PROBABLE CAUSE WAS AIR FILTER ICING AND FAILURE TO USE ALTERNATE AIR SOURCE. AUTOMATIC INDUCTION BYPASS SYS BEING CHKED. ACFT FLT MANUAL BEING REVIEWED FOR ICING PROCS.

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.