Emb-505 flight crew reported deviated from clearance during departure.

Narrative:

Departed runway xx at ZZZ using the company noise abatement procedure. Early in the climbout icing conditions were encountered and there was some confusion and concern on my part as pilot flying about the speed at which we should have been climbing. The noise abatement procedure calls for V2+20 KIAS with partial flaps (flaps 1); however there is minimum speed with airframe anti-ice on of 150 KIAS with flaps up. I was unsure about whether to climb at V2+20 (in this case 135 KIAS) or if I should discontinue the noise abatement procedure and accelerate to a speed at or above 150 KIAS. I was on IOE and initiated a discussion with the instructor; who was pilot monitoring on this leg; regarding my uncertainty about the speed. During the course of our discussion; while on an assigned heading; ATC issued a clearance to proceed direct ZZZ1 VOR out of 11;000. I can't recall the altitude at the time the clearance was issued; but believe it to have been approximately 9;000 and very shortly after the handoff from approach to center. Passing through 12;800 feet; ATC reissued the clearance to proceed direct ZZZ1 VOR and we immediately complied. The flight continued safely to the destination without any further issues.although a decision needed to be made about the climb speed and some crew communication was necessary; the error might have been avoided had some of the discussion been postponed until later in the climb.

Original NASA ASRS Text

Title: EMB-505 flight crew reported deviated from clearance during departure.

Narrative: Departed Runway XX at ZZZ using the company noise abatement procedure. Early in the climbout icing conditions were encountered and there was some confusion and concern on my part as Pilot Flying about the speed at which we should have been climbing. The noise abatement procedure calls for V2+20 KIAS with partial flaps (Flaps 1); however there is minimum speed with airframe anti-ice on of 150 KIAS with flaps up. I was unsure about whether to climb at V2+20 (in this case 135 KIAS) or if I should discontinue the noise abatement procedure and accelerate to a speed at or above 150 KIAS. I was on IOE and initiated a discussion with the instructor; who was Pilot Monitoring on this leg; regarding my uncertainty about the speed. During the course of our discussion; while on an assigned heading; ATC issued a clearance to proceed direct ZZZ1 VOR out of 11;000. I can't recall the altitude at the time the clearance was issued; but believe it to have been approximately 9;000 and very shortly after the handoff from Approach to Center. Passing through 12;800 feet; ATC reissued the clearance to proceed direct ZZZ1 VOR and we immediately complied. The flight continued safely to the destination without any further issues.Although a decision needed to be made about the climb speed and some crew communication was necessary; the error might have been avoided had some of the discussion been postponed until later in the climb.

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	1704474
Time
Date	201911
Local Time Of Day	0601-1200
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Flight Conditions	IMC
Light	Daylight
Aircraft 1
Make Model Name	EMB-505 / Phenom 300
Operating Under FAR Part	Part 91
Flight Phase	Climb
Flight Plan	IFR
Person 1
Function	First Officer Pilot Flying
Qualification	Flight Crew Air Transport Pilot (ATP) Flight Crew Multiengine Flight Crew Instrument
Events
Anomaly	Deviation - Procedural Clearance Deviation - Procedural Published Material / Policy Deviation - Speed All Types Deviation - Track / Heading All Types Inflight Event / Encounter Weather / Turbulence