BS ISO 16004:2017 pdf download – Aircraft ground equipment — Passenger boarding bridge or transfer vehicle — Interface requirements with aircraft doors
5.1.3 Horizontal reference plane
The plane of the aircraft door sill.
NOTE 1 This plane is horizontal only in reference to the aircraft, not to the ground: most civil transport aircraft types present a nose down cabin floor slope of, typically, 1° to 2°. Unless the passenger boarding bridge or passenger transfer vehicle’s platform is equipped with a “twisting” adjustment system, it will usually be at a slight angle from the reference plane.
NOTE 2 On those aircraft with an outward opening door, the lower edge of the door when stowed in the open position is located between 51 mm (2.0 in) and 90 mm (3.5 in) over the horizontal reference plane.
5.2 Critical areas
For the aircraft types taken into account, the critical areas where any interference from the passenger boarding bridge or passenger transfer vehicle shall be avoided are shown in Figure 1. In relation to the reference planes defined in 5.1, the areas concerned are the hatched areas shown in Figure 2.
NOTE Figures 1 and 2 concern the doors on the left-hand (LH) side of the aircraft. Where a passenger boarding bridge or passenger transfer vehicle is intended for use on right-hand (RH) side doors, a symmetrical pattern is used.
5.3 Minimum requirements The design of the aircraft mating section of the passenger boarding bridge or passenger transfer vehicle shall guarantee the absence of interference with any of the critical areas defined in 5.2, while the suitably padded leading edge of the platform is in contact with the aircraft skin, including any effect of padding flexibility. The absence of interference shall be ensured
a) within a reasonable range of longitudinal (parallel to the aircraft centerline) positioning accuracy; a positioning accuracy of ±100 mm (4 in) or more should be considered,
b) with the passenger boarding bridge or passenger transfer vehicle platform floor level (see NOTE 1 in 5.1.3) with the horizontal reference plane (aircraft door sill), and c) within the expected range of vertical excursion, during normal aircraft turnaround activities, of the relative positions of the aircraft and the passenger boarding bridge or passenger transfer vehicle’s platform.
5.4 Automatic levelling Passenger boarding bridges shall be equipped with an automatic levelling system as defined in IATA AHM 922. The automatic levelling system performance and operation shall meet the requirements of 5.3.
A back-up system as defined in IATA AHM 922 shall be provided on passenger boarding bridges in order to avoid a risk of damage to the aircraft in the event of automatic levelling system failure. The back-up system may consist in (a) bridge platform cut-out(s) of appropriate dimensions, ensuring the absence of interference with any of the critical areas defined in 5.2. 6 Operating requirements Staff authorized to position and remove a passenger boarding bridge or passenger transfer vehicle shall be briefed at regular intervals on:
a) the existence, location and importance for flight safety of critical devices such as pitots, probes, sensors, etc. on those aircraft types and sub-types serviced at the airport,
b) the passenger boarding bridge or passenger transfer vehicle positioning and removal procedures, including longitudinal accuracy, required to ensure the absence of interference, and
c) the requirement to visually check the critical devices at passenger boarding bridge or passenger transfer vehicle removal, and advise the crew or qualified aeronautical engineer in charge in the event of traces of interference being apparent.BS ISO 16004 pdf download.