Small transport operating empty experiences engine power loss in cruise and loses 600'.

Attributes
ACN	118814
Time
Date	198908
Day	Tue
Local Time Of Day	0001 To 0600
Place
Locale Reference	atc facility : sus
State Reference	MO
Altitude	msl bound lower : 10400 msl bound upper : 11000
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Controlling Facilities	artcc : zau
Operator	common carrier : air taxi
Make Model Name	Small Transport
Flight Phase	cruise other
Flight Plan	IFR
Person 1
Affiliation	company : air taxi
Function	flight crew : first officer
Qualification	pilot : cfi pilot : atp
Experience	flight time last 90 days : 100 flight time total : 2727 flight time type : 330
ASRS Report	118814
Person 2
Affiliation	company : air taxi
Function	flight crew : captain oversight : pic
Qualification	pilot : instrument pilot : atp pilot : commercial
Events
Anomaly	aircraft equipment problem : critical altitude deviation : excursion from assigned altitude non adherence : clearance
Independent Detector	other flight crewa
Resolutory Action	flight crew : returned to intended course or assigned course flight crew : overcame equipment problem
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation other

Narrative:

At cruise level flight (11,000 MSL), right engines lost power. On IFR flight plan in VFR conditions at night. Lost 600' in altitude before we re-lit and started to climb back up to our assigned altitude. Pilot performance was affected by fatigue. Power loss as yet undetermined. No traffic conflict. No apparent safety hazard. I am filing this report because loss of altitude could be interpreted as excessive.

Original NASA ASRS Text

Title: SMALL TRANSPORT OPERATING EMPTY EXPERIENCES ENGINE POWER LOSS IN CRUISE AND LOSES 600'.

Narrative: AT CRUISE LEVEL FLT (11,000 MSL), RIGHT ENGINES LOST POWER. ON IFR FLT PLAN IN VFR CONDITIONS AT NIGHT. LOST 600' IN ALT BEFORE WE RE-LIT AND STARTED TO CLIMB BACK UP TO OUR ASSIGNED ALT. PLT PERFORMANCE WAS AFFECTED BY FATIGUE. POWER LOSS AS YET UNDETERMINED. NO TFC CONFLICT. NO APPARENT SAFETY HAZARD. I AM FILING THIS REPORT BECAUSE LOSS OF ALT COULD BE INTERPRETED AS EXCESSIVE.

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