In-flight engine shutdown performed after aircraft equipment problem malfunction becomes apparent.

Attributes
ACN	223673
Time
Date	199210
Day	Sun
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : iah
State Reference	TX
Altitude	msl bound lower : 9000 msl bound upper : 9000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : gfk
Operator	common carrier : air carrier
Make Model Name	Light Transport, Low Wing, 2 Turboprop Eng
Flight Phase	cruise other descent other
Route In Use	enroute airway : iah
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time total : 4500
ASRS Report	223673
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument
Events
Anomaly	aircraft equipment problem : critical other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : unspecified other flight crewa
Resolutory Action	flight crew : declared emergency other
Consequence	Other
Supplementary
Primary Problem	Aircraft

Narrative:

While en route to houston from alexandria a fluctuation in np was noted in the left engine. This condition became much more pronounced during descent. After np fluctuations exceeded 1 percent and torque exceeded the caution range, the QRH was consulted. After trying the solutions stated and having to effect the engine was shut down as recommended.

Original NASA ASRS Text

Title: INFLT ENG SHUTDOWN PERFORMED AFTER ACFT EQUIP PROBLEM MALFUNCTION BECOMES APPARENT.

Narrative: WHILE ENRTE TO HOUSTON FROM ALEXANDRIA A FLUCTUATION IN NP WAS NOTED IN THE L ENG. THIS CONDITION BECAME MUCH MORE PRONOUNCED DURING DSCNT. AFTER NP FLUCTUATIONS EXCEEDED 1 PERCENT AND TORQUE EXCEEDED THE CAUTION RANGE, THE QRH WAS CONSULTED. AFTER TRYING THE SOLUTIONS STATED AND HAVING TO EFFECT THE ENG WAS SHUT DOWN AS RECOMMENDED.

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.