In-flight engine shutdown.

Attributes
ACN	300389
Time
Date	199503
Day	Tue
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : sat
State Reference	TX
Altitude	msl bound lower : 21000 msl bound upper : 21000
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Controlling Facilities	artcc : zhu
Operator	common carrier : air carrier
Make Model Name	Merlin Undifferentiated or Other Model
Operating Under FAR Part	Part 135
Flight Phase	cruise other other
Route In Use	enroute airway : zhu
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp pilot : commercial pilot : cfi
Experience	flight time last 90 days : 150 flight time total : 3850 flight time type : 600
ASRS Report	300389
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : commercial
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 none taken : unable other
Consequence	Other
Supplementary
Primary Problem	Aircraft

Narrative:

Right engine egt began to rise above the 20 degree margin temperature limit for the current OAT. I reduced power lever and observed no reduction in egt or torque. I then reduced power to just above flight idle. Egt slowly began to decrease. I put power lever back up to match the left, right egt and torque began surging erratically, since egt was surging past 600 degrees momentarily, torque was surging approximately plus or minus 500 ft pounds, and yaw was significant, I secured the right engine. I took control of aircraft, assigned first officer to declare emergency, and landed in san antonio without further incident.

Original NASA ASRS Text

Title: INFLT ENG SHUTDOWN.

Narrative: R ENG EGT BEGAN TO RISE ABOVE THE 20 DEG MARGIN TEMP LIMIT FOR THE CURRENT OAT. I REDUCED PWR LEVER AND OBSERVED NO REDUCTION IN EGT OR TORQUE. I THEN REDUCED PWR TO JUST ABOVE FLT IDLE. EGT SLOWLY BEGAN TO DECREASE. I PUT PWR LEVER BACK UP TO MATCH THE L, R EGT AND TORQUE BEGAN SURGING ERRATICALLY, SINCE EGT WAS SURGING PAST 600 DEGS MOMENTARILY, TORQUE WAS SURGING APPROX PLUS OR MINUS 500 FT LBS, AND YAW WAS SIGNIFICANT, I SECURED THE R ENG. I TOOK CTL OF ACFT, ASSIGNED FO TO DECLARE EMER, AND LANDED IN SAN ANTONIO WITHOUT FURTHER INCIDENT.

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.