Any Unknown or Unlisted Aircraft Manufacturer
Flight Crew Air Transport Pilot (ATP)
Flight Crew Last 90 Days 60; Flight Crew Total 25000; Flight Crew Type 4000
ATC Issue All Types; Deviation - Altitude Overshoot; Deviation / Discrepancy - Procedural Clearance
VFR departure out of SDL. Positive control by PHX ATC departure. Controller asked what altitude was requested. Responded 15;500. Controller responded back. I heard climb to 15;500. I readback cleared 15;500. Controller later said the clearance was to 5;500. Very similar numbers may have caused error.
A corporate First Officer had an altitude deviation during departure from PHX airport.