Challenger 300 flight crew reported receiving a bleed air leak message during climb. Flight crew reduced affected engine thrust and completed a diversion and landing.
Synopsis
Challenger 300 flight crew reported receiving a bleed air leak message during climb. Flight crew reduced affected engine thrust and completed a diversion and landing.
Narrative
On Day 0 we departed ZZZ for ZZZ1. I was pilot flying and the Captain was pilot monitoring. Upon passing 15;000 feet MSL for (as my memory serves) FL230; we received a Triple Chime Red CAS Message for L ENG PYLON LEAK. This happened around XA55Z. The Captain took over the controls and we received an updated ATC clearance to maintain 16;000 while we worked through the message. We went through the associated checklist; which ultimately called for the L engine throttle to be placed at idle. Upon being placed at idle; the CAS message disappeared. The Captain gave me the controls again as he contacted company and maintenance and we received delayed radar vectors while we aviated. Maintenance requested we divert to ZZZ2; after which we received a diversion clearance to ZZZ2. I continued to act as pilot flying. We continued to ZZZ2 at assigned altitude of 17;000 feet and made an uneventful approach and landing on runway XX. We taxied to the FBO without incident for maintenance.There should be some sort of standardization when doing specific maintenance flights. We had a maintenance flight for a dual-engine change the day before this flight and were not given specific parameters to check or certain requirements such as altitude; airspeed; further testing; etc. Taking the aircraft up to a higher altitude may have allowed us to learn about the bleed air leak earlier (if it was present then) -- i.e. during the maintenance flight rather than the ferry flight the next day. In other words; when checking an aircraft after a dual-engine change; it might be best to take it up to the flight levels to ensure that there is sufficient time to find any potential issue (bleed air leak; broken line; whatever it may be). Otherwise; ATC did great; the airport we went to was good for maintenance; and the experience was one we were well prepared for.
Second reporter narrative
During climbout from ZZZ; passing 15;000 feet; master warning light and L pylon bleed leak CAS message illuminated. Leveled at 16;000 feet and complied with QRH. Indications of bleed leak were extinguished. Conferred with maintenance control and advised chief pilot on duty of situation and intent to divert to ZZZ2 for maintenance. Uneventful approach and landing accomplished at ZZZ2 in VMC conditions.
Source: NASA Aviation Safety Reporting System (public domain). Reports are voluntary submissions and are not verified by NASA.