B737-800
Training / Qualification; Situational Awareness
Conflict Ground Conflict; Critical; Deviation / Discrepancy - Procedural Published Material / Policy; Ground Event / Encounter Aircraft; Ground Event / Encounter Vehicle
General None Reported / Taken
Environment - Non Weather Related; Human Factors
On Date; I was doing a LOSA (Line Operations Safety Audit) observation on the ramp on Gate XX. While waiting for the 737-800 on Gate XX to pushout Gate XY E175 pushed out and was disconnected right behind the 737-800 on Gate XY. The E175 was waiting for the A319 that was at the top of the [alley] waiting to taxi off on to the live movement area so that the E175 [was able] to proceed itself; in that time a fuel tanker drove up behind the E175 on the Vehicle Service Road (VSR) saw the aircraft; proceeded to drive around the E175 and squeeze in between the E175 wing and the tail of the 737-800 parked on Gate XY and around the back of the A319 that was about to taxi into the live movement area and at no point in time did this vehicle stop he just continue go. It's procedure that all vehicles give the aircraft the right away when they are about to taxi off. I would consider this to be a near miss for reasons of if this the E175 would have throttle up and begin to taxi a collision of the low wing and the fuel tanker could've taken place. This brings significant damage to the aircraft wing; cancellation of the flight and perhaps a potential fuel spill from the fuel tanker. This is an airport violation the drive was to stop and wait for the aircraft to taxi off to then proceed on the VSR. This information could be found in the city and ZZZ Airport Non-Movement Area Driver Training. All airport personnel who drives on the ramp is require to take this training to be able to drive on the ramp.
Groud employee conducting a LOSA observation on the ramp reported a near miss occurred when a fuel tanker truck drove close by several aircraft preparing to taxi.