Are all bonding cables in place, functional, and used properly? Figure: Fuel truck / aircraft bonding, from Eddie's notes. Mount the filter/separator or fuel monitor on the side of drum, and bond correctly. This is called bonding, as opposed to the old grounding. Bonding connections shall be made prior to making fueling connections and shall not be disconnected until the fuel-transfer operations are completed and the fueling connections have been removed. 3. Aircraft refueling is one of serious task carried out by trained aircraft mechanics.Refueling an aircraft is a process where trained personnel carried out task to fill an aircraft with fuel in order to enable the aircraft to continue its journey. Low Temp Aviation/Aircraft Refueling Hose (11) Regular Temp Aviation/Aircraft Refueling Hose (90) WORLDWIDE SHIPPING. Aircraft Refueling; Chemical Plants; Grain Elevators; Rescue and Hazmat Operations; Features. Position the refueling truck and chock the wheels. Drums should be placed near grounding posts, and the following sequence of connections observed: 1. The problem is there is a layer of lubricating grease between that bolt and the airplane. Depending on the aircraft type, locate the grounding (earthing) points: On the Nose Landing Gear (NLG). This is to maintain the operation of the fuel pump system, and to ensure the vehicle can vacate immediately in the event of emergency. GROUND SERVICING OF AIRCRAFT AND STATIC GROUNDING/BONDING F09603-99-D-0382 DISTRIBUTION STATEMENT A - Approved for public release; distribution is unlimited (WR-ALC/PA Public Affairs Certification Number 04-10-70). AIRCRAFT REFUELLING NOZZLES ZVF50 ZVF25 ZVF50. bond test determines whether or not an electrical ground has been established between two points. Reply 18th Aug 2016, 09:51 # 5 ( permalink) Jan Olieslagers Specification Type. (NFPA 407:5.4 . Note that fuel trucks aren't grounded while fueling always, but they always bond to the aircraft structure. One of the problems with this process is that most refuelers use a cable retracting reel for the cable. As for the refueling truck, it is usually grounded (often along the refueling line to the underground tank) AND bonded to the aircraft. Critical refueling rates are related to the airplane refueling installations and the designer should seek the advice of fuel suppliers on this problem. cause a spark. Aircraft Refueling Hose Specification : Conforming to std. Engine switches and nonessential electrical equipment shall be in the "off" position, or as dictated in the aircraft manual. These reels bond and/or ground aircraft, fuel trucks, and other equipment. Plastic mold for making depression in concrete pour around loop in Aircraft Grounding Tie Down. §139.321 Handling and storing of hazardous substances and materials. Learn how to incorporate best practices around equipment and processes when draining static electricity from equipment. Once parked, set the parking brake, chock the wheels, and connect the static bonding cable from the truck to the aircraft. Install bonding or grounding connections against smooth, clean surfaces. adjusting the critical refueling rates. The reason for using a bonding strap during refueling is that when an electrically, non-conductive fluid like Jet A or 100LL is transferred, these liquids build up static electricity that can arc and cause a fire if not dissipated. For a fuel tank that you use on floats, you still need to have a bonding cable connected to the plane. Ideal for attaching to landing gear, posts, ground balls, ground rods and other curved unpainted surfaces. Exception: Where means are provided to prevent fuel from flow- . Mount the filter/separator or fuel monitor on the side of drum, and bond correctly. Reinforcement : 2-3 layers of textile braids with copper bonding wire.… Open Aircraft Fuel Cap 7. This ensures that the plane and the refueler are at the same electrical potential when the hose is placed in the filler neck and during the refueling process. There are several pictures in the document to illustrate this. Photo: Improper grounding example, from Eddie's notes. The Main Landing Gears (MLG). Provide smooth operation and require minimum cable pull. For their own safety, keep passengers out of the aircraft while fueling is in progress. Over-the-wing Refueling [G450 Aircraft Operating Manual . How Not to Ground. Connect Bonding cable between Fueling Nozzle and designated Bonding location on aircraft 7. Bonding - aircraft and refueling equipment: The aircraft, refueling vehicles and overwing nozzles shall. Declutching arbor and adjustable guide arm with cable guide. Aviation refuelling 2 inch trigger nozzle for use with Avgas or Jet A1, with integral sight glass, 100 mesh strainer, bump protector, and internal . Fuel flowing in pipes, especially certain types of plastic pipe or funnels, can build up a static electrical charge in that material, which when brought into very near proximity with the aircraft filler neck might allow the static charge to jump the gap i.e. This article is intended to provide guidance on performing hot fueling procedures safely by utilizing practical knowledge and standards set forth by the National Fire Protection Association NFPA . Our Price: (Registered Users Only) potential exists between the units. Fuel flash points 5. DETAILS . It also describes supplementary tasks that are necessary if refuelling . HOT REFUELING OF U.S. NAVY AIRCRAFT This manual supersedes TO 00-25-172CL-3 dated 22 October 1990, Change 4 . . Bonding refers to various items connected together, while grounding specifies a connection made with the ground. This ensures that the plane and the refueler are at the same electrical potential when the hose is placed in the filler neck and during the refueling process. 10-Yr Bond. Fuel movement during refuelling or defuelling may lead to the a static charge building up in the fuel. The ALS10A is used in all aircraft fueling or maintenance operations and complies with mil-spec M83413/7-1. For this it is essential to ground the aircraft before the fuel nozzle is brought to the tank inlet. BS 3158 TYPE B or API bulletin 1529 Constructions : Inner Tube : Seamless inner tube of petroleum/fuel resistant synthetic rubber. Automatic Refueling. The charge density in the fuel and the possibility of sparks inside the tanks are not affected by bonding. (I use a single car jumper lead for this purpose) Lately, I have received a number of questions concerning grounding or bonding an aircraft during the refueling process. If turbine fuel is being used, the fuel must settle for a few hours. This Advisory Circular provides Explanatory Material (EM) for the purpose of fueling of aircraft. On a piston aircraft, the vapor pressure of the fuel is less than that of . Quick release spouts, 32 mm and 38 mm bore . the aircraft fueling point. Drum to ground. . It is mandatory to bond the aircraft to the refuelling vehicle/device before connecting the refuelling hose One of the aircraft grounding (earthing) points must be used to connect the bonding cable. Lately, I have received a number of questions concerning grounding or bonding an aircraft during the refueling process. Bond parts individually, if possible. AC21.99 Advisory Circular Electrical bonding of aircraft to earth has generally been aimed at protecting aircraft and personnel from the hazards associated with static electrical discharge. Section 20.9 (Air service operations — precautions in refuelling, engine and ground radar operations) . . Make bonding or grounding connections in such a manner that no part of the aircraft structure is weakened. The two main refueling systems are probe-and-drogue, which is simpler to adapt to existing aircraft, and the flying boom, which offers faster fuel . The reason for using a bonding strap during refueling is that when an electrically, non-conductive fluid like Jet A or 100LL is transferred, these liquids build up static electricity that can arc and cause a fire if not dissipated. Disconnect and rewind the bonding cables. Bond or ground parts to the primary aircraft structure, where practicable. So, if jerry canning; assure that the can sits on the ground between being in the car, and being in contact with the plane. Fueling Inspections. Aircraft fueling hose shall be inspected before use each day. According to Airbus's guide on safe refueling, electrical bonding also prevents "any spark from appearing when the ground operator connects the refueling hose to the aircraft coupling." Connecting the fuel hoses This is the final step before the airplane tank can start receiving the fuel. Remove the chocks, apply the service brakes, and release the parking brake Stage 2: Underwing Fuel transfer between Refueler Truck and Aircraft. ———- When attaching any 1" nozzle, allows you to bond the nozzle to the tank before you remove the tank cap and maintain that bond reliably. Stewart R. Browne Manufacturing offers a complete line of aircraft ground clamps, plugs and cable assemblies. Not less than two chock blocks not less than 5 inches by 5 inches by 12 inches (127 mm by 127 mm by 305 mm) in size and dished to fit the contour of the tires shall be utilized and positioned in such a manner as to preclude movement of the vehicle in any direction. In my last column, I wrote about static electricity and the need for a bonding cable. (1) There are two kinds of bonding paths: • Primary bonding paths. First, ensure the aircraft is properly bonded via an approved bonding method, and open the fuel panel under the wing. Are all vehicles clear of aircraft being fueled? One of the problems with this process is that most refuelers use a cable retracting reel for the cable. They may be connected to the hydrant valve only during fueling of banks and when aircraft are present at the gate. List of Time Compliance Technical Orders TCTO Number TCTO Title TCTO Date (NFPA 407:5.6) no vehicles permitted within 50 feet of fueling aircraft So by bonding with the gas pump cable first, you make the plane the same electrical potential as the fuel pump, and you're not going to have a spark. Aircraft-fueling vehicles shall be electrically bonded to the aircraft being fueled or defueled. TO 00-25-172 Ground Servicing of Aircraft and Static Grounding/Bonding 5 RECORD OF APPLICABLE TIME COMPLIANCE TECHNICAL ORDERS (TCTOs). Make sure the REFUELING switch (1) and the DEFUELING switch (7) are both in the CLOSED position. Tips to Ground an Aircraft While Refueling. EM is further provided for rule parts . The cable is a full 4' of heavy 1/8" vinyl coated 7x7 galvanized steel with a heavy duty copper clamp. Heavy Duty Static Bonding & Grounding Cable. Aircraft power is not necessary to defuel the aircraft by suction through the pressure fueling / defueling adapter.