HOW do PILOTS PARK their plane? ACCURATE PARKING explained by CAPTAIN JOE
How Do Pilots Park Planes Accurately?
Introduction to Aircraft Parking
- The video welcomes viewers from Campinas, Brazil, and introduces the topic of how pilots park planes accurately at gates.
- It promises insights into traditional methods and modern guidance systems used in aircraft parking.
Understanding Airport Layout
- Major airports feature large waiting areas with views of the apron where parked airplanes are visible.
- The yellow lead-in line guides aircraft to their designated parking stands, ending with a stop line that is perpendicular to it.
Types of Parking Stands
- Various types of parking stands exist based on aircraft size and purpose:
- Terminal stands for passenger planes.
- Cargo stands near distribution centers.
- General aviation terminals for smaller jets.
- Remote parking for emergency response vehicles.
Role of the Aircraft Marshaller
- Aircraft must be parked under supervision by a marshaller who ensures proper alignment with the centerline and stops at the correct position.
- Accurate positioning is crucial as it allows ground crews to access the plane without obstruction once engines are off.
Marshalling Signals Explained
- Modern air bridges require precise parking; accurate positioning minimizes movement needed for bridge adjustments.
- Marshaling signals are visual cues used by marshals to guide pilots using bright colored boards or illuminated beacons.
Key Marshalling Signals:
- Arms raised straight up indicate readiness to guide or identify gate.
- Taxi ahead signal involves moving arms inward; right/left turn corrections use specific arm movements.
- Slow down signal involves lowering arms with a padding gesture; normal stop is indicated by crossing arms above head.
Additional Guidance Systems
- After stopping, marshals signal pilots to set brakes and confirm chocks placement; external power connection also has specific signals.
- In some cases, two marshals assist larger aircraft like the Boeing 747 for better visibility during landing.
Stand Entry Guidance Systems (SEGS)
- Nose-in stands often utilize SEGS which can provide stop position information or centerline guidance.
- Visual Docking Guidance Systems (VDGS), including Azimuth Guidance (AGNS), help pilots align correctly using color-coded panels indicating deviation from centerline.
Aircraft Parking Guidance Systems
Overview of Aircraft Parking Aids
- The Agnis system does not inform pilots when to stop; thus, additional aids like the PAPA (Parallax Aircraft Parking Aid) are often used. This system consists of a box with a horizontal cutout.
- Inside the PAPA box is a fluorescent light stick that moves along different marks corresponding to various aircraft types as the pilot maneuvers the airplane into position.
- The correct stopping position is achieved when the mark for the specific aircraft aligns with the light stick. However, this system has limitations due to its offset from the centerline, requiring pilots to alternate views between guidance systems.
Historical Context and Alternatives
- An older version of parking aid was Berlin Tegel's "side marker board," which had green and red panels indicating whether a pilot had moved too far into the stand.
- Other visual aids include simple traffic lights or mirrors for pilots to check their stop positions. Most visual aids are designed primarily for use by pilots in the left-hand seat.
Modern Guidance Systems
- Advanced Visual Docking Guidance Systems (AVDGS), featuring LED displays, provide precise electronic centerline guidance and additional information such as gate numbers and aircraft types.
- RLG docking systems combine laser technology with display units that show aircraft type, remaining distance, and relative position indicators using colored light bars similar to those in Agnis systems.
Safe Dock System Features
- The Safe Dock by ADB Safegate features a large display showing both aircraft type and an inline scheme. It indicates current nose wheel position relative to centerline as well as necessary steering inputs required during approach.
Pilot Responsibilities During Parking Procedures
- Regardless of whether manual or electronic systems are used, ultimate responsibility for safety during parking lies with the pilot in command.
- Before entering a parking stand, pilots must confirm that docking systems are operational and correctly set up for their specific aircraft type. First officers assist by monitoring surroundings during this process.
- If any issues arise with docking systems, it is crucial for pilots to stop immediately and notify ATC for assistance from ground marshals.