Jet engine start valve opened in-flight. Emergency declared and landed.

Attributes
ACN	230234
Time
Date	199301
Day	Sat
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : msp
State Reference	MN
Altitude	msl bound lower : 18000 msl bound upper : 18000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zmp tracon : msp tower : dlh
Operator	common carrier : air carrier
Make Model Name	Large Transport, Low Wing, 3 Turbojet Eng
Flight Phase	climbout : intermediate altitude
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : flight engineer pilot : atp
Experience	flight time last 90 days : 180 flight time total : 11500 flight time type : 400
ASRS Report	230234
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : commercial
Events
Anomaly	aircraft equipment problem : critical
Independent Detector	other flight crewa
Resolutory Action	flight crew : declared emergency none taken : unable
Consequence	Other
Supplementary
Primary Problem	Aircraft

Narrative:

#3 engine start valve opened in-flight. Declared an emergency. Contacted dispatch and msp maintenance control. Performed precautionary engine shutdown. Returned to msp airport and landed with emergency equipment standing by. All other operations normal.

Original NASA ASRS Text

Title: JET ENG START VALVE OPENED INFLT. EMER DECLARED AND LANDED.

Narrative: #3 ENG START VALVE OPENED INFLT. DECLARED AN EMER. CONTACTED DISPATCH AND MSP MAINT CTL. PERFORMED PRECAUTIONARY ENG SHUTDOWN. RETURNED TO MSP ARPT AND LANDED WITH EMER EQUIP STANDING BY. ALL OTHER OPS NORMAL.

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.