A G450 engine auto shutdown after takeoff for unknown reasons but a blue cas message left engine mai...

Attributes
ACN	1010026
Time
Date	201205
Local Time Of Day	0001-0600
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	Gulfstream IV / G350 / G450
Operating Under FAR Part	Part 91
Flight Phase	Initial Climb
Route In Use	Direct
Flight Plan	IFR
Component
Aircraft Component	Turbine Engine
Person 1
Function	Captain
Qualification	Flight Crew Air Transport Pilot (ATP) Flight Crew Multiengine
Experience	Flight Crew Last 90 Days 92 Flight Crew Total 4500 Flight Crew Type 1000
Events
Anomaly	Aircraft Equipment Problem Critical Deviation - Procedural Published Material / Policy

Narrative:

Preflight was normal. Completed cockpit checks. There was a blue cas left engine maint 150. We looked it up in the QRH. The QRH stated; 'dispatch permitted with this message active.' I believe we discussed doing an engine shut down and restart/reboot; but decided to depart with the message active and complete an aircraft shutdown at our destination. We departed shortly. The takeoff and initial climb was normal. Approximately 2 to 3 minutes into flight passing through 5;000 to 6;000 ft I heard a muffled thump. We experienced an aircraft yaw to the left at the same time. The copilot stated we lost the left engine. We declared an emergency and started to level off and return to the airport. We decided no to try an engine restart as we were so close to the departure airport. We ran the appropriate checklist and we returned to the airport.

Original NASA ASRS Text

Title: A G450 engine auto shutdown after takeoff for unknown reasons but a Blue CAS message L ENG MAINT 150 was displayed during preflight which the QRH stated was a dispatchable item.

Narrative: Preflight was normal. Completed cockpit checks. There was a Blue CAS L ENG Maint 150. We looked it up in the QRH. The QRH stated; 'Dispatch permitted with this message active.' I believe we discussed doing an engine shut down and restart/reboot; but decided to depart with the message active and complete an aircraft shutdown at our destination. We departed shortly. The takeoff and initial climb was normal. Approximately 2 to 3 minutes into flight passing through 5;000 to 6;000 FT I heard a muffled thump. We experienced an aircraft yaw to the left at the same time. The Copilot stated we lost the left engine. We declared an emergency and started to level off and return to the airport. We decided no to try an engine restart as we were so close to the departure airport. We ran the appropriate checklist and we returned to the airport.

Data retrieved from NASA's ASRS site as of July 2013 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.

A G450 engine auto shutdown after takeoff for unknown reasons but a blue cas message left engine maintenance 150 was displayed during preflight which the QRH stated was a dispatchable item.