Date: 202007
Local time of day: 1201-1800
Location: ZZZ.ARTCC, US
Flight conditions: IMC
Weather elements / visibility: Icing; Rain; Turbulence
Light: Daylight
Aircraft: EMB-505 / Phenom 300
Operator: Fractional
Operating under: Part 91
Flight plan: IFR
Mission: Passenger
Flight phase: Cruise
Airspace: Class A ZZZ
ATC / advisory: Center ZZZ
Aircraft component: Ice/Rain Protection System
Component problem: Malfunctioning
Reporter organization: Fractional
Reporter function: Pilot Flying; Captain
Reporter qualification: Flight Crew Instrument; Flight Crew Flight Instructor; Flight Crew Air Transport Pilot (ATP); Flight Crew Multiengine
Human factors: Troubleshooting; Workload; Communication Breakdown
Second reporter function: First Officer; Pilot Not Flying
Anomaly: Aircraft Equipment Problem Less Severe; Deviation - Altitude Excursion From Assigned Altitude; Deviation / Discrepancy - Procedural Clearance; Deviation / Discrepancy - Procedural Published Material / Policy; Inflight Event / Encounter Weather / Turbulence
Detector: Automation Aircraft Other Automation; Person Flight Crew
When detected: In-flight
Result: Air Traffic Control Provided Assistance; Flight Crew Overcame Equipment Problem; Flight Crew Requested ATC Assistance / Clarification
Contributing factors: Aircraft; Weather
Primary problem: Aircraft

Narrative: During flight; at FL450; we had abnormal engine icing indications in conjunction with moderate turbulence and lost communications. Finding warmer temperatures and smoother air was increasingly becoming a concern. I stayed on Comm1 trying to get a descent clearance but there was no ability to hear each other. My copilot went on Comm2 and [requested priority handling] after multiple attempts of reaching someone on other frequencies. The [priority handling] call was due to the start of a decent with lack of radio establishment; engine icing indications in icing conditions; and moderate turbulence. We started a decent to FL320 because we were needing to get to warmer temperatures; and as we descended it offered better transmission clarity. I flew the plane while copilot got communication and position identification established. Once we were in a safe position; with warmer temperatures and communication established; I went to the previous frequency to get a phone number to call Center to review the situation; they gave a number. When we were on the next frequency; center gave us a different number to call once on the ground. We called and spoke to ZZZ Center; reviewing what had happened on our end and on theirs. She said they would fill out an in-house document called the 'Mandatory Occurrence Report' and not report anything regarding pilot deviations due to my copilots [priority handling] call. She said it wasn't necessary to take names or certificate numbers because the document was for their training purpose only. She explained she agreed with our decision and did not see any wrong doing on our end. During flight; at FL450; we had abnormal engine icing indications in conjunction with moderate turbulence and lost communications. Finding warmer temperatures and smoother air was increasingly becoming a concern. I stayed on Comm1 trying to get a decent clearance but there was no ability to hear each other. My copilot went on Comm2 and [requested priority handling] after multiple attempts of reaching someone on other frequencies. The [priority handling] call was due to the start of a decent with lack of radio establishment; engine icing indications in icing conditions; and moderate turbulence. We started a decent to FL320 because we were needing to get to warmer temperatures; and as we descended it offered better transmission clarity. I flew the plane while copilot got communication and position identification established. Once we were in a safe position; with warmer temperatures and communication established; I went to the previous frequency to get a phone number to call Center to review the situation; they gave a number. When we were on the next frequency; center gave us a different number to call once on the ground. We called and spoke to ZZZ Center; reviewing what had happened on our end and on theirs. She said they would fill out an in-house document called the 'Mandatory Occurrence Report' and not report anything regarding pilot deviations due to my copilots [priority handling] call. She said it wasn't necessary to take names or certificate numbers because the document was for their training purpose only. She explained she agreed with our decision and did not see any wrong doing on our end.


Second narrative: [Report narrative contained no additional information].


Synopsis: EMB505 flight crew reported descending due to lack of radio establishment; engine icing indications in icing conditions; and moderate turbulence.