Medium Large Transport
Flight Crew Air Transport Pilot (ATP); Flight Crew Multiengine; Flight Crew Instrument; Flight Crew Flight Instructor
Flight Crew Last 90 Days 95; Flight Crew Total 16500; Flight Crew Type 140
ATC Issue All Types; Conflict Ground Conflict; Critical
Flight Crew Requested ATC Assistance / Clarification
Human Factors
Position at PBI FBO. Requested taxi. Ground said taxi to 10L via E; hold for a Cirrus from right to left; follow him; hold short of 14. Acquired Cirrus visually; confirmed Captain had it in sight; and he started taxi. As we approached 14/32; ATC cleared us across 32; and to continue via F and L to 10L. Crossed 14 and as we turned up F; Captain asked; 'confirm F and L all the way?' I replied 'affirmative.' As we approached F2 I looked to my left to verify the Cirrus was proceeding on R; and looked to my right to verify no other traffic was approaching on L. I looked back to my left; and saw motion. Said 'Captain; there is an airplane!' He looked and saw it also. Two of our passengers saw it also. The aircraft (Aircraft Y) had taken off on the short parallel runway and passed over us at an estimated height of 100 feet or less. There was no opportunity to take evasive action. As we turned onto L; I called Ground Control and advised them what had happened. Ground replied 'sorry about that.' We continued on L; called tower; were given 'Line up and wait 10L; traffic landing 14; traffic on a six mile final 10L.' Traffic cleared; we were cleared for takeoff; and departed.Factors were: busy airport; all 3 runways in use (parallel and intersecting.) Parallel runways are separated by approximately 700 feet or less; and the short parallel (10R) departs over active taxiways and nearly directly over [the] ramp on the south side of the airport. Coordination between tower and ground was obviously compromised. From the position we were at on taxiway F; distance to departure end of 10R is approximately 4500 feet. It is difficult to see if an aircraft is on the runway; let alone in the takeoff roll. Layout of taxiways in the vicinity of taxiways F; L and N is a charted 'hotspot; requiring increased vigilance.'
Corporate Jet First Officer reported while taxiing out at PBI a GA aircraft flew over their aircraft that had departed from the short parallel runway.