Challenger 350 captain reported left engine indications exceeded limits during climbout and it was s...

Narrative:

[On] initial climb; moderate vibrations [were] felt followed by left engine exceedance. Itt was noticed by first officer as red. Left engine exceedance checklist completed. Even with left thrust reduced; vibration continued with moderate intensity. Quick right downwind for return to runway xxl already established. Left engine vibration caution on three minutes after first warning. [We] elected a precautionary shutdown. No emergency declared but fire and rescue requested and confirmed with ATC. [We] joined a four mile final with approach centerline to [runway] xxl. Normal landing [and] roll out to full stop near taxi way exit. Fire and rescue directly behind aircraft. Exterior inspection revealed no bird impact or front fan damage. Gear pins installed on runway with FBO towing plane back to ramp for parking. No other warnings or cautions. [Maintenance control] contacted for write up. Crew completed shutdown parking checklist.

Original NASA ASRS Text

Title: Challenger 350 Captain reported left engine indications exceeded limits during climbout and it was shut down as a precaution. Flight crew returned to departure airport and landed without incident.

Narrative: [On] initial climb; moderate vibrations [were] felt followed by L ENG Exceedance. ITT was noticed by First Officer as red. L ENG Exceedance Checklist completed. Even with L thrust reduced; vibration continued with moderate intensity. Quick right downwind for return to Runway XXL already established. Left ENG Vibration caution on three minutes after first warning. [We] elected a precautionary shutdown. No emergency declared but Fire and Rescue requested and confirmed with ATC. [We] joined a four mile final with approach centerline to [Runway] XXL. Normal landing [and] roll out to full stop near taxi way exit. Fire and Rescue directly behind aircraft. Exterior inspection revealed no bird impact or front fan damage. Gear pins installed on runway with FBO towing plane back to ramp for parking. No other warnings or cautions. [Maintenance Control] contacted for write up. Crew completed Shutdown Parking Checklist.

Data retrieved from NASA's ASRS site 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.

Attributes
ACN	1586967
Time
Date	201810
Local Time Of Day	1801-2400
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Flight Conditions	VMC
Light	Dusk
Aircraft 1
Make Model Name	Challenger 350
Operating Under FAR Part	Part 91
Flight Phase	Climb
Flight Plan	IFR
Component
Aircraft Component	Turbine Engine
Person 1
Function	Captain Pilot Flying
Qualification	Flight Crew Air Transport Pilot (ATP) Flight Crew Instrument Flight Crew Multiengine
Events
Anomaly	Aircraft Equipment Problem Less Severe

Challenger 350 captain reported left engine indications exceeded limits during climbout and it was shut down as a precaution. Flight crew returned to departure airport and landed without incident.