Aircraft Wheel and Brake Systems from United States (US)

Question 1

What is Federal Supply Class 1630?

Accepted Answer

FSC 1630 is the Federal Supply Class (formally known as NATO Supply Classification Class NSC 1630) in the USA for supply items codified in the category of Aircraft Wheel and Brake Systems.

Question 2

What is NATO Supply Classification Class 1630?

Accepted Answer

NSC 1630 is the NATO Supply Classification Class (also known as Federal Supply Class FSC 1630 in the USA) for supply items codified in the category of Aircraft Wheel and Brake Systems.

Question 3

Which Federal Supply Group is FSC 1630 in?

Accepted Answer

FSC 1630 is in Federal Supply Group (FSG) 16 which contains Aerospace Craft Components and Accessories.

Question 4

Which NATO Supply Classification Group is NSC 1630 in?

Accepted Answer

NSC 1630is in NATO Supply Classification Group (NSG) 16 which contains Aerospace Craft Components and Accessories.

Question 5

What is a Landing Gear Wheel?

Accepted Answer

A Landing Gear Wheel (WHEEL,LANDING GEAR) is a wheel which balances and supports the weight of an airplane when in contact with solid surfaces. Includes wheels with solid molded tires.

Question 6

What is a Dual Disk Brake?

Accepted Answer

A Dual Disk Brake (BRAKE,DUAL DISK) is a brake consisting essentially of the following:  a. A single piece or divided cylinder housing designed to be mounted on the torque flange of an axle. The cylinder housing has a slot or groove through which the DISK, BRAKE passes. It contains a piston(s) or push rod(s) which provides the hydraulic or mechanical force to press the LINING, FRICTION against the DISK, BRAKE.  b. LINING, FRICTION.  c. Two DISK, BRAKE designed to be keyed or rigidly attached to a wheel or rotating shaft.

Question 7

What is a Single Disk Brake?

Accepted Answer

A Single Disk Brake (BRAKE,SINGLE DISK) is a brake consisting essentially of the following&#58;  a. A single piece or divided cylinder housing designed to be mounted on the torque flange of an axle. The cylinder housing has a slot or groove through which the DISK, BRAKE passes. It contains a piston&#40;s&#41; or push rod&#40;s&#41; which provides the hydraulic or mechanical force to press the LINING, FRICTION against the DISK, BRAKE.  b. LINING, FRICTION.  c. A DISK, BRAKE designed to be keyed or rigidly attached to a wheel or rotating shaft.

Question 8

What is a Multiple Disk Brake?

Accepted Answer

A Multiple Disk Brake (BRAKE,MULTIPLE DISK) is a brake consisting essentially of the following:  a. A brake anchor bracket, also called a carrier assembly, which is the basic unit of the brake. It is designed to be attached to the torque flange of the axle and is also the part upon which the other components of the brake are assembled.  b. A floating hydraulically actuated annular piston, or an equivalent mechanical device, used for applying braking pressure.  c. Metallic disks keyed to rotate with the wheel alternated with nonrotating disks keyed to the anchor bracket. See also BRAKE, SEGMENTED ROTOR.

Question 9

What is a Segmented Rotor Brake?

Accepted Answer

A Segmented Rotor Brake (BRAKE,SEGMENTED ROTOR) is a brake consisting essentially of the following:  a. A brake anchor bracket, also called a carrier assembly, which is the basic unit of the brake. It is designed to be attached to the torque flange of the axle and is also the part upon which the other components of the brake are assembled.  b. A floating hydraulically actuated annular piston, or an equivalent mechanical device, used for applying braking pressure.  c. Segments of brake lining attached to the nonrotating disks.

Question 10

What is a Shoe Type Brake?

Accepted Answer

A Shoe Type Brake (BRAKE,SHOE TYPE) is a brake consisting essentially of the following:  a. A torque spider which is a disklike metal part designed to fit over and be attached to the torque flange of the axle.  b. One or more brake shoes with brake lining attached.  c. A hydraulic cylinder(s) or mechanical linkage to provide the force by which the brake shoe is pressed against the brake drum.

Question 11

What is a Wheel Hydraulic Brake Cylinder?

Accepted Answer

A Wheel Hydraulic Brake Cylinder (CYLINDER,HYDRAULIC BRAKE,WHEEL) is a cylinder designed to house the piston and other necessary component parts of a CYLINDER ASSEMBLY, HYDRAULIC BRAKE, WHEEL.

Question 12

What is a Wheel Hydraulic Brake Cylinder Assembly?

Accepted Answer

A Wheel Hydraulic Brake Cylinder Assembly (CYLINDER ASSEMBLY,HYDRAULIC BRAKE,WHEEL) is a device consisting of a CYLINDER, HYDRAULIC BRAKE, WHEEL with a piston(s) and other component parts which is mounted to the back plate of a wheel. It uses the flow and pressure of a fluid to create the linear motion required to operate the brake shoes of a hydraulic brake system.

Question 13

What is a Master Hydraulic Brake Cylinder?

Accepted Answer

A Master Hydraulic Brake Cylinder (CYLINDER,HYDRAULIC BRAKE,MASTER) is a cylinder, usually incorporating an integral reservoir, designed to house the necessary component parts of a CYLINDER ASSEMBLY, HYDRAULIC BRAKE, MASTER.

Question 14

What is a Master Hydraulic Brake Cylinder Assembly?

Accepted Answer

A Master Hydraulic Brake Cylinder Assembly (CYLINDER ASSEMBLY,HYDRAULIC BRAKE,MASTER) is a device consisting of a reservoir and/or CYLINDER, HYDRAULIC BRAKE, MASTER with other components necessary to displace fluid from a central source for actuating the slave or wheel cylinders of a hydraulic brake system.

Question 15

What is a Brake Drum?

Accepted Answer

A Brake Drum is a circular shaped metal item designed to be connected to a machine or vehicle shaft or wheel and used to retard, stop or prevent motion by the application of pressure exerted by brake(s) or band(s).

Question 16

What is a Hydraulic Brake Cylinder Cup?

Accepted Answer

A Hydraulic Brake Cylinder Cup (CUP,HYDRAULIC BRAKE CYLINDER) is a circular-shaped item of molded synthetic or natural rubber designed specifically to seal fluid pressure and prevent leakage within the cylinders of a vehicular hydraulic brake system. It is a component of CYLINDER ASSEMBLY, HYDRAULIC BRAKE, MASTER or CYLINDER ASSEMBLY, HYDRAULIC BRAKE, WHEEL. Excludes CUP, COMPRESSION.

Question 17

What is a Brake Shoe Wear Plate?

Accepted Answer

A Brake Shoe Wear Plate (PLATE,WEAR,BRAKE SHOE) is a rigid replaceable metal item, designed to be mounted on the actuating or cam end of a brake shoe to receive the thrust of the operating cam.

Question 18

What is a Friction Lining?

Accepted Answer

A Friction Lining (LINING,FRICTION) is a fibrous and/or metallic material with or without binders and/or compounds, cut or molded to a specific size. It may be a segment or a complete lining. It is usually designed to be fastened to a shoe, disk, band, cone, or the like, but may be installed without fastening. It provides a friction surface for transmitting, retarding, or stopping motion. Excludes LINING MATERIAL, FRICTION.

Question 19

What is a Wheel Balancing Weight?

Accepted Answer

A Wheel Balancing Weight (WEIGHT,WHEEL BALANCING) is a metal item designed to dynamically and statically balance the pneumatic tired wheels of a vehicle. The weight is usually attached to the rim by means of an integral spring steel clip.

Question 20

What is a Brake Lining Kit?

Accepted Answer

A Brake Lining Kit is a collection of items consisting of brake linings of specific size(s) together with rivets and/or bolts for fastening the lining to the original brake shoes. Excludes brake shoe kits containing the assembled brake shoes complete with linings, and also brake lining packaged in sheets or rolls.

Question 21

What is a Pneumatic Tire Wheel Rim?

Accepted Answer

A Pneumatic Tire Wheel Rim (RIM,WHEEL,PNEUMATIC TIRE) is a circular metal item designed to mount on a WHEEL, PNEUMATIC TIRE to support and retain the tire. It may be of one piece or it may include a RING, LOCK, AUTOMOTIVE WHEEL; RING, SIDE, AUTOMOTIVE WHEEL; or RING, SIDE AND LOCK, AUTOMOTIVE WHEEL. For items with provisions for mounting on a separate hub capable of turning on a central axis, see WHEEL (as modified).

Question 22

What is a Hydraulic Brake Master Cylinder Push Rod?

Accepted Answer

A Hydraulic Brake Master Cylinder Push Rod (PUSH ROD,HYDRAULIC BRAKE MASTER CYLINDER) is an item in the form of a rod with one end designed to mate with the socket of a PISTON, HYDRAULIC BRAKE, MASTER CYLINDER, the other end designed to connect with various forms of rod connectors.

Question 23

What is a Brake Backing Plate?

Accepted Answer

A Brake Backing Plate (PLATE,BACKING,BRAKE) is a rigid circular shaped metal item with a centrally located aperture. It has mounting holes and is specifically designed to mount and position the components of a BRAKE (as modified). It also serves to prevent dirt and other foreign matter from entering the braking mechanism. Excludes items which are used as a dust shield only.

Question 24

What is a Grease Cap?

Accepted Answer

A Grease Cap (CAP,GREASE) is a cap, usually of metal, designed to retain lubricant and excludes foreign matter from bearings. It is normally used as an end closure on items designed to rotate on a shaft,such as a wheel hub, or fit into a housing at the end of a rotating shaft, or the like. Do not use if a more specific name applies. For items mounted by bolt holes, see COVER, ACCESS.

Question 25

What is an Aircraft Fluid Manifold?

Accepted Answer

An Aircraft Fluid Manifold (MANIFOLD,FLUID,AIRCRAFT) is an enclosure with three (3) or more openings designed for use in aircraft de-icing, fuel, hydraulic, oil, pneumatic, and vacuum systems to collect and/or distribute fluids. It may contain valves or metering devices and the like. Excludes MANIFOLD, AIRCRAFT INSTRUMENTS.

Question 26

What is a Brake Shoe?

Accepted Answer

A Brake Shoe is a metal item in the shape of an arc, with or without a replaceable friction lining on the surface of the shoe arc. When actuated by a cam, lever and/or hydraulic cylinder, it exerts pressure on a drum or wheel. Also, see BRAKE, SHOE TYPE.

Question 27

What is a Disk Brake Shoe?

Accepted Answer

A Disk Brake Shoe is a replaceable metal plate, usually affixed with a fabric friction lining as the contact pad surface. It may be of circular, kidney, or rectangular shape. When mounted in a caliper cylinder housing, between brake disk and hydraulic or pneumatic piston(s), or wheel and caliper lever, it is so designed that actuated pressure, on the shoe friction pad, will retard or stop motion. Excludes BRAKE, DUAL DISK; BRAKE, SINGLE DISK; BRAKE SHOE; and DISK, BRAKE.

Question 28

What is a Landing Gear Wheel Parts Kit?

Accepted Answer

A Landing Gear Wheel Parts Kit (PARTS KIT,LANDING GEAR WHEEL) is excludes PARTS KIT, LANDING GEAR.

Question 29

What is a Mechanical Equipment Seal Replacement Parts Kit?

Accepted Answer

A Mechanical Equipment Seal Replacement Parts Kit (PARTS KIT,SEAL REPLACEMENT,MECHANICAL EQUIPMENT) is a parts kit consisting of numerous items.  The kit may contain seals, gaskets, packing, and/or retainers for repairing mechanical equipment.  Excludes kits including tools, collars, pins, sleeves and associated hardware.  Excluds PARTS KIT (1), SEAL REPLACEMENT, ARTILLERY.

Question 30

What is a Hydraulic Brake Piston?

Accepted Answer

A Hydraulic Brake Piston (PISTON,HYDRAULIC BRAKE) is a metallic or nonmetallic item designed to function in a wheel cylinder or caliper of a hydraulic brake system.

Question 31

What is a Disc Brake Caliper Assembly?

Accepted Answer

A Disc Brake Caliper Assembly (CALIPER ASSEMBLY,DISC BRAKE) is a U-shaped device with a floating, sliding or fixed mounting design. A device by which force is applied by mechanical, hydraulic, vacuum, or pneumatic actuation to slow or bring to a stop, a rotating rotor disc. It may contain any number of associated parts, such as pistons which may be offset or opposed to each other, caliper housings, bolts, support springs, bushings, sleeves, shields, bleed screws, dust boot, shoe retainers and the like. May also include brake-pads with assembled linings. Excludes rotor discs.

Question 32

What is a Disc Brake Rotor?

Accepted Answer

A Disc Brake Rotor (ROTOR,DISC BRAKE) is a flat circular metallic device with a center mounting area of various configuration (recessed, flat, protruding, shouldered, etc.). It is a component of a caliper type brake system designed with a flat machine braking surface which may be of a solid, ribbed or space designed for cooling purposes. For a rotor with a hub see ROTOR ASSEMBLY, DISC BRAKE.

Question 33

What is a Disc Brake Rotor Assembly?

Accepted Answer

A Disc Brake Rotor Assembly (ROTOR ASSEMBLY,DISC BRAKE) is a flat circular metallic device with a center mounting area of various configuration &#40;recessed, flat, protruding, shouldered, etc.&#41;, it also includes the mating hub, and may include items such as roller cups, studs, and the like. It is a component of a caliper type brake system designed with a flat machine braking surface which may be of a solid, ribbed or space designed for cooling purposes. For a rotor without a hub see ROTOR, DISC BRAKE.

Question 34

What is an Insulator Plug?

Accepted Answer

An Insulator Plug (PLUG,INSULATOR) is a solid cylindrical shaped item used on aircraft brake systems to insulate the hydraulic piston against the heat generated by the disc brakes.

Question 35

What is an Aircraft Wheel Heat Shield?

Accepted Answer

An Aircraft Wheel Heat Shield (HEAT SHIELD,WHEEL,AIRCRAFT) is a metallic item used to protect a wheel or brake flange and tire from heat.

Question 36

What is an Aircraft Wheel Half?

Accepted Answer

An Aircraft Wheel Half (WHEEL HALF,AIRCRAFT) is a circular item which is joined with a similar item to form a wheel. It is designed to provide for the attachment of various related components, such as bearings, balance weights, heat shield(s), and the like.

Question 37

What is an Aircraft Anti-Lock Brake Sensor?

Accepted Answer

An Aircraft Anti-Lock Brake Sensor (SENSOR,ANTI-LOCK BRAKE,AIRCRAFT) is an alternating or direct current generator driven by main landing gear wheels for the purpose of providing the antiskid control unit a signal voltage or variable frequency current in a proportion to wheel speed. The device may be axle or wheel hubcap mounted.

Question 38

What is an Aircraft Wheel Half Assembly?

Accepted Answer

An Aircraft Wheel Half Assembly (WHEEL HALF ASSEMBLY,AIRCRAFT) is a WHEEL HALF, AIRCRAFT and attached parts which comprise a portion of a wheel assembly, but which by themselves do not constitute a complete functioning item.

Question 39

What is an Aircraft Wheel Hub Cap?

Accepted Answer

An Aircraft Wheel Hub Cap (HUB CAP,WHEEL,AIRCRAFT) is an item used to prevent dust and moisture from entering the various components of a wheel assembly. It may or may not have various components attached to activate anti-skid devices.

Question 40

What is an Aircraft Wheel Assembly?

Accepted Answer

An Aircraft Wheel Assembly (WHEEL ASSEMBLY,AIRCRAFT) is an assembly consisting of two WHEEL HALF ASSEMBLY (ies) with all components or a WHEEL HALF ASSEMBLY and a wheel flange with all components to form a wheel for aircraft.

Question 41

What is a Disc Brake Stator?

Accepted Answer

A Disc Brake Stator (STATOR,DISC BRAKE) is a flat circular metallic device which may or may not have attached linings with the inside diameter notched to fit over a keyed or splined carrier. When combined in a segmented rotor or multiple-disc brake assembly provides braking action and dissipates the resulting heat.

Question 42

What is an Aircraft Hydraulic Brake Piston Assembly?

Accepted Answer

An Aircraft Hydraulic Brake Piston Assembly (PISTON ASSEMBLY,HYDRAULIC BRAKE,AIRCRAFT) is an assembly consisting of the piston and one or more different components of the wheel brakes. These components may be, but are not limited to linings, seals and springs.

Question 43

What is a Wheel Brake Piston Housing?

Accepted Answer

A Wheel Brake Piston Housing (HOUSING,PISTON,WHEEL BRAKE) is a nonferrous forging or casting machined to support pistons with integral connecting fluid passages. Provisions are provided for attachment to a brake torque tube and the aircraft landing gear strut. Provisions for automatic adjusters and pressure plate return springs may be included.

Question 44

What is an Aircraft Brake Wear Cap?

Accepted Answer

An Aircraft Brake Wear Cap (CAP,WEAR,AIRCRAFT BRAKE) is a sacrificial metallic device formed to protect aircraft brake rotors, stators, and pressure plates from shock stresses during brake engagements. It also provides oxidation protection.

Question 45

What is a Brake Thermal Piston Insulator?

Accepted Answer

A Brake Thermal Piston Insulator (PISTON INSULATOR,THERMAL,BRAKE) is a phenolic or metallic composite device of various shapes and sizes located between brake actuating pistons and the pressure plate. It prevents the heat transfer from the pressure plate into the piston which could damage seals and hydraulic fluid within the piston housing.

Question 46

What is a Brake Torque Stator Tube?

Accepted Answer

A Brake Torque Stator Tube (STATOR TUBE,TORQUE,BRAKE) is a metallic hub with protuding keys or splines designed to prevent the rotation of stationary brake discs. It may include an integral end plate and provisions for anchoring to a piston housing or carrier. Excludes TORQUE TUBE ASSEMBLY, AIRCRAFT.

Question 47

What is an Antiskid Control Unit?

Accepted Answer

An Antiskid Control Unit (CONTROL UNIT,ANTISKID) is an electronic device which processes wheel speed sensor signals and generates command signals to the brake control valve which meters hydraulic brake pressure at slightly less than skid producing level.  It also prevents brake application prior to touchdown and may receive direct cockpit electrical input to initiate braking.

Question 48

What is a Brake Disc?

Accepted Answer

A Brake Disc (DISC,BRAKE) is a flat circular metallic item, a component of a disk type brake used primarily for frictional purposes.

Aircraft Wheel and Brake Systems - United States (US)

Federal Supply Class (FSC): 1630

NATO Supply Classification Class (NSC): 1630

Federal Supply Group (FSG): 16 Aerospace Craft Components and Accessories

NATO Supply Classification Group (NSG): 16 Aerospace Craft Components and Accessories

Items Managed by United States (US) - NCB is 00 to 09

Page 2 of 40

NSN Format for Aircraft Wheel and Brake Systems
Codified by United States

Frequently Asked Questions(FAQ) for Federal Supply Class 1630

Supply Items Included in Federal Supply Class 1630

Stock Items From Supply Class 1630 Page 2 of 40