Narrative:

Departure from vny. We felt confident in the HARYS2 SID off of runway 16R and how to properly execute the departure as per company advisory of vny typical clearance. We were given cvs except maintain 4;000 feet. On departure using navigation and vs on the fgp; we executed the SID to the first fix pprry and then the 110 heading at 4;000 feet. Went to heading mode on the fgp when established on the 110 degree heading waiting for the next vector and altitude assignment. Heading 360 was assigned; a left turn. Complied with still at 4;000 feet. ATC then cleared us to FL190 and direct to slapp. We started the climb and nfp entered direct to slapp. Abruptly; ATC (a different sounding voice) commanded us to turn left immediately to a heading of 190 for low altitude warning alert. We complied. Next ATC turned us back to the right heading 340 and now climb to 14;000 feet. Next climb to 15;000 feet. Then there was an ATC frequency change and the next controller cleared us to slapp and climb to FL190 and resume the departure. The flight was concluded with no incident.suggestions: I believe there is a lack of clarity; lack of communication and lack of training on this departure. I believed we were turned to the heading of 360 (vectors after heading 110 on the SID) and forgotten or there was an over saturation on ATC's end. This is such a high density area for flying that departure and arrival procedures need to be straight forward; simple and tailored for all flight skill levels.

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Original NASA ASRS Text

Title: First Officer and Captain reported receiving a low altitude alert from ATC and immediate turn during departure from VNY airport.

Narrative: Departure from VNY. We felt confident in the HARYS2 SID off of RWY 16R and how to properly execute the departure as per company advisory of VNY typical clearance. We were given CVS except maintain 4;000 feet. On departure using NAV and VS on the FGP; we executed the SID to the first fix PPRRY and then the 110 HDG at 4;000 feet. Went to HDG mode on the FGP when established on the 110 degree HDG waiting for the next vector and ALT assignment. HDG 360 was assigned; a left turn. Complied with still at 4;000 feet. ATC then cleared us to FL190 and direct to SLAPP. We started the climb and NFP entered direct to SLAPP. Abruptly; ATC (a different sounding voice) commanded us to turn left immediately to a heading of 190 for low altitude warning alert. We complied. Next ATC turned us back to the right heading 340 and now climb to 14;000 feet. Next climb to 15;000 feet. Then there was an ATC frequency change and the next Controller cleared us to SLAPP and climb to FL190 and resume the departure. The flight was concluded with no incident.Suggestions: I believe there is a lack of clarity; lack of communication and lack of training on this departure. I believed we were turned to the heading of 360 (vectors after heading 110 on the SID) and forgotten or there was an over saturation on ATC's end. This is such a high density area for flying that departure and arrival procedures need to be straight forward; simple and tailored for all flight skill levels.

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.