An small transport twin pilot had an engine failure. He lost some altitude and heading control while shutting down the engine. He did not declare an emergency.

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Attributes
ACN	223201
Time
Date	199210
Day	Sat
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : cew airport : 81j
State Reference	FL
Altitude	msl bound lower : 12600 msl bound upper : 13000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zjx tracon : vps
Operator	general aviation : corporate
Make Model Name	Small Transport, Low Wing, 2 Recip Eng
Flight Phase	cruise other
Route In Use	enroute airway : zjx
Flight Plan	IFR
Person 1
Affiliation	Other
Function	flight crew : single pilot
Qualification	pilot : instrument pilot : commercial pilot : atp pilot : cfi
Experience	flight time last 90 days : 72 flight time total : 12500 flight time type : 480
ASRS Report	223201
Person 2
Affiliation	government : faa
Function	controller : radar
Qualification	controller : radar
Events
Anomaly	aircraft equipment problem : critical altitude deviation : excursion from assigned altitude non adherence : clearance other spatial deviation
Independent Detector	aircraft equipment other aircraft equipment : unspecified other controllera other flight crewa
Resolutory Action	controller : issued new clearance flight crew : overcame equipment problem flight crew : declared emergency
Consequence	Other
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	Pilot Deviation other

Narrative:

Just level at cruise altitude and cleared direct lgc at 13000. Left engine developed coolant leak. Performed precautionary shut down of engine. Lost 400 ft altitude during process. Turned back to airport (81J) at destin, fl, and called ZJX. Advised of engine problem and requested lower altitude with returns to 81J. Center promptly cleared me to 7000 ft and return to base. Center then passed me to elgin AFB approach control. Eglin cleared me to 6000 ft and asked if I was declaring an emergency. I replied negative and proceeded to destin airport without further incident under control of eglin approach. 2 mistakes: lost 400 ft during engine shutdown and turned back to airport prior to receiving clearance from ZJX. Under circumstances of unknown condition of left engine, the mistakes were honest and reflect only human reaction. I did everything as rapidly as possible, considering safety. I could have, however, precluded the altitude loss with proper cockpit technique.

Original NASA ASRS Text

Title: AN SMT TWIN PLT HAD AN ENG FAILURE. HE LOST SOME ALT AND HDG CTL WHILE SHUTTING DOWN THE ENG. HE DID NOT DECLARE AN EMER.

Narrative: JUST LEVEL AT CRUISE ALT AND CLRED DIRECT LGC AT 13000. LEFT ENG DEVELOPED COOLANT LEAK. PERFORMED PRECAUTIONARY SHUT DOWN OF ENG. LOST 400 FT ALT DURING PROCESS. TURNED BACK TO ARPT (81J) AT DESTIN, FL, AND CALLED ZJX. ADVISED OF ENG PROBLEM AND REQUESTED LOWER ALT WITH RETURNS TO 81J. CTR PROMPTLY CLRED ME TO 7000 FT AND RETURN TO BASE. CTR THEN PASSED ME TO ELGIN AFB APCH CTL. EGLIN CLRED ME TO 6000 FT AND ASKED IF I WAS DECLARING AN EMER. I REPLIED NEGATIVE AND PROCEEDED TO DESTIN ARPT WITHOUT FURTHER INCIDENT UNDER CTL OF EGLIN APCH. 2 MISTAKES: LOST 400 FT DURING ENG SHUTDOWN AND TURNED BACK TO ARPT PRIOR TO RECEIVING CLRNC FROM ZJX. UNDER CIRCUMSTANCES OF UNKNOWN CONDITION OF L ENG, THE MISTAKES WERE HONEST AND REFLECT ONLY HUMAN REACTION. I DID EVERYTHING AS RAPIDLY AS POSSIBLE, CONSIDERING SAFETY. I COULD HAVE, HOWEVER, PRECLUDED THE ALT LOSS WITH PROPER COCKPIT TECHNIQUE.

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.