Aircraft Air Conditioning, Heating, and Pressurizing Equipment from United Kingdom (UK)

Question 1

What is Federal Supply Class 1660?

Accepted Answer

FSC 1660 is the Federal Supply Class (formally known as NATO Supply Classification Class NSC 1660) in the USA for supply items codified in the category of Aircraft Air Conditioning, Heating, and Pressurizing Equipment.

Question 2

What is NATO Supply Classification Class 1660?

Accepted Answer

NSC 1660 is the NATO Supply Classification Class (also known as Federal Supply Class FSC 1660 in the USA) for supply items codified in the category of Aircraft Air Conditioning, Heating, and Pressurizing Equipment.

Question 3

Which Federal Supply Group is FSC 1660 in?

Accepted Answer

FSC 1660 is in Federal Supply Group (FSG) 16 which contains Aerospace Craft Components and Accessories.

Question 4

Which NATO Supply Classification Group is NSC 1660 in?

Accepted Answer

NSC 1660is in NATO Supply Classification Group (NSG) 16 which contains Aerospace Craft Components and Accessories.

Question 5

What is a Metal Grille?

Accepted Answer

A Metal Grille (GRILLE,METAL) is a metal frame enclosing a metal core which is constructed of perforated sheet metal, bars, core material, or the like. It is used to form an openwork barrier or screen to allow the passage of a maximum quantity of air and/or light, but excluding the passage of foreign objects. Excludes GUARD, FAN IMPELLER.

Question 6

What is an Aircraft Heater?

Accepted Answer

An Aircraft Heater (HEATER,AIRCRAFT) is a heater used to raise the temperature of the air in the interior of aircraft in which it is installed. Circulation of the heated air may be achieved by an integral blower or fan. Excludes HEATER PACKAGE, AIRCRAFT, external type heaters, and portable type heaters.

Question 7

What is an Air Conditioning Filter Element?

Accepted Answer

An Air Conditioning Filter Element (FILTER ELEMENT,AIR CONDITIONING) is a replaceable device designed to remove dust, pollen or other foreign matter from the air passing through it. The removal of particles is accomplished by porous fibrous or shredded material (metallic or nonmetallic) which is loosely woven or matted and confined in a frame or retained between perforated sheets of firmer material. It is designed to fit into air conditioners, ventilation systems and hot air furnaces. It may have facilities for radio frequency/electromagnetic interference shielding. The filter may be cleaned by the use of compressed air, blown through the filter element, or by using water and a suitable detergent for cleaning purposes which would extend the life of the filter.

Question 8

What is a Demand Oxygen Regulator?

Accepted Answer

A Demand Oxygen Regulator (REGULATOR,OXYGEN,DEMAND) is a regulator designed to deliver pure breathing oxygen automatically when the user inhales, within a maximum operating altitude of 35,000 feet (10,668 m).

Question 9

What is a Dirt And Liquid Deflector?

Accepted Answer

A Dirt And Liquid Deflector (DEFLECTOR,DIRT AND LIQUID) is an item so shaped as to deflect one or more of the following: dust, dirt, grease, oil, or liquid into a desired direction or away from a particular area. Can be attached to a stationary or with a revolving part.May or may notbe a mechanical device.

Question 10

What is a Liquid Oxygen Converter?

Accepted Answer

A Liquid Oxygen Converter (CONVERTER,LIQUID OXYGEN) is a unit consisting of a jacketed container, with or without a heat source, used to convert liquid oxygen into gasous breathing oxygen.  See also CONVERTER, LIQUID OXYGEN PUMPING METHOD.

Question 11

What is an Oxygen Mask?

Accepted Answer

An Oxygen Mask (MASK,OXYGEN) is a device consisting of a facepiece which partially covers the face, having a breathing tube and a coupling for connecting to a regulated supply of oxygen. The device may be of the rebreathing type or of the demand type and may be used for rescue operation or to supply the wearer with oxygen when flying at high altitudes. It may include regulating device(s) but does not include oxygen cylinder(s). Excludes MASK, ORONASAL.

Question 12

What is an Aircraft Air Conditioning-Heating Duct Assembly?

Accepted Answer

An Aircraft Air Conditioning-Heating Duct Assembly (DUCT ASSEMBLY,AIR CONDITIONING-HEATING,AIRCRAFT) is a hollow body used to transport air to various parts of the aircraft for the purpose of heating, cooling, pressurizing, de-icing, and the like. It may include flange(s), bracket(s), and the like for mounting purposes. Excludes pipes used in aircraft exhaust systems and pipes used in non-aircraft applications. Excludes PIPE, EXHAUST and PIPE, AIR CONDITIONING-HEATING.

Question 13

What is a Fluid Filter?

Accepted Answer

A Fluid Filter (FILTER,FLUID) is a filter having inlet and outlet connections and designed to be connected in a pipe, tube or hose line. For spin-on, base-mounted filtering devices with integral outer casings, see FILTER ELEMENT, FLUID. Excludes AIR CONDITIONER.

Question 14

What is a Valve Disk?

Accepted Answer

A Valve Disk (DISK,VALVE) is an item of various shapes (usually circular, conical, cylindrical, or rectangular) used to prevent or regulate the flow of liquids or gases through the valve. May include a retainer, screw, holder, and the like.

Question 15

What is an Aircraft Components Modification Kit?

Accepted Answer

An Aircraft Components Modification Kit (MODIFICATION KIT,AIRCRAFT COMPONENTS) is an item or items employed individually or conjunctively to modify aircraft components.

Question 16

What is an Aircraft Air Temperature Electrical-Electronic Control Box?

Accepted Answer

An Aircraft Air Temperature Electrical-Electronic Control Box (CONTROL BOX,ELECTRICAL-ELECTRONIC,AIRCRAFT AIR TEMPERATURE) is a metal inclosure which includes mounts and protects any quantity and/or combination of electrical/electronic devices such as resistors, relays, potentiometers, receptacles, rectifiers, bridge networks and the like. If electrical, it may not contain electronic tubes and/or resistors. It may have adjustment controls. Designed to produce an electrical signal to control air temperature for an aircraft cabin, cockpit, window, windshield and other comparments for the purpose of anti-icing, defogging or heating.

Question 17

What is an Aircraft Air Outlet Housing?

Accepted Answer

An Aircraft Air Outlet Housing (HOUSING,AIR OUTLET,AIRCRAFT) is an item designed for housing components for the dispersement of air in aircraft environmental systems.

Question 18

What is an Aircraft Thermal Insulation Pipe Covering?

Accepted Answer

An Aircraft Thermal Insulation Pipe Covering (INSULATION PIPE COVERING,THERMAL,AIRCRAFT) is an item composed of one or more materials, molded, compressed, and/or baked into a rigid covering of irregular shapes and sizes.  It is designed to cover air ducts and/or air duct fittings used in air conditioning, heating, cooling, pressurizing, de-icing systems and in hydraulic systems to restrict the dissipation of heat. It may completely or partially encase the item for which designed. It may be furnished with or without fillers, cement, and/or separate or attached accessories for installation, (excluding flexible air duct covering and rigid pipe and pipe fitting coverings used in construction and building materials). Excludes INSULATION BLANKET,THERMAL,AIRCRAFT; INSULATION PIPE FITTING COVERING,THERMAL; and INSULATION SLEEVING,THERMAL.

Question 19

What is an Aircraft Thermal Insulation Blanket?

Accepted Answer

An Aircraft Thermal Insulation Blanket (INSULATION BLANKET,THERMAL,AIRCRAFT) is a flexible item composed of one or more kinds of fibers prefabricated into various shapes and sizes. It may have a vapor barrier and is covered on one or both sides with a jacket material such as vinyl or other sheet material. It may have mounting provisions such as holes or snaps to facilitate installation. It is designed to cover air conditioning, heating, cooling, pressurizing, de-icing components and air ducts to prevent or reduce the transfer of heat. Excludes rigid air duct coverings and insulation material supplied in flat sheets or rolls. Excludes INSULATION PIPE COVERING,THERMAL,AIRCRAFT and INSULATION BLANKET,THERMAL.

Question 20

What is an Aircraft Heating And Ventilating Air Diffuser?

Accepted Answer

An Aircraft Heating And Ventilating Air Diffuser (DIFFUSER,AIR,AIRCRAFT HEATING AND VENTILATING) is a device for installation in aircraft, used in varying designs to effect the proper distribution of ventilated or heated air to assure temperature equalization, or for the defrosting and de-icing of aircraft glass surfaces.

Question 21

What is a Pressure Bellows?

Accepted Answer

A Pressure Bellows (BELLOWS,PRESSURE) is a mechanism having two or more folded or corrugated wall surfaces, which can expand or contract linearly. Converts pressure effects into controlled linear movement or provides a pressure signal to another device. May contain head, caps and/or stem.

Question 22

What is an Aircraft Cabin Air Pressure Controller?

Accepted Answer

An Aircraft Cabin Air Pressure Controller (CONTROLLER,AIR PRESSURE,AIRCRAFT CABIN) is an item designed to regulate aircraft cabin and/or compartment pressure by providing a reference pressure signal to control the operation of one or more valves discharging cabin and/or compartment air to the atmosphere. May contain or operate in conjunction with selector controls for desired altitude pressure and altitude rate of change or be pre-set for automatic operation without selector controls. For items consisting of a controller and a valve, see REGULATOR, AIR PRESSURE, AIRCRAFT CABIN.

Question 23

What is an Aircraft Air To Air Heat Exchanger?

Accepted Answer

An Aircraft Air To Air Heat Exchanger (HEAT EXCHANGER,AIR TO AIR,AIRCRAFT) is a heat transfer device designed to lower compressed air temperature to an acceptable level by passing it through tubes and flowing ducted ram air over the tubes, heat of the compressed air is transferred to the ram air reducing the temperature. Consists of a sheet metal housing with ram air connection(s) with or without ducts, a tubular type core, inlet and outlet ports. May contain a shutoff valve. Normally used in aircraft air conditioning and/or air induction systems.

Question 24

What is an Aircraft Survival Kit Oxygen System?

Accepted Answer

An Aircraft Survival Kit Oxygen System (OXYGEN SYSTEM,AIRCRAFT SURVIVAL KIT) is a system designed as a component of an aircraft survival kit to provide emergency breathing oxygen under varying conditions such as bailout or failure of main oxygen supply. Consists of oxygen bottles, regulator and may include personal leads assembly providing an oxygen manual release, necessary hoses and fittings to carry oxygen and communications from survival kit to crew members pressure suit and/or helmet.

Question 25

What is an Aircraft Air Conditioning System Water Separator?

Accepted Answer

An Aircraft Air Conditioning System Water Separator (SEPARATOR,WATER,AIRCRAFT AIR CONDITIONING SYSTEM) is an item which separates free moisture or water vapor from the compressed airstream in an aircraft air conditioning system after it is discharged from a cooling turbine. Provides moisture free air for cabin and/or compartments. Normally consists of a cylindrical or oval shaped shell with an inlet and outlet port and a drain port, a cylindrical, rectangular or conical shape condenser, and a device to collect the moisture after it leaves the condenser. May include an internal bypass valve. Generally consists of two types: (1) the condenser-eliminator type which collects the moisture on a tubular type core after it leaves the condenser and runs to the bottom and drains out; (2) the swirl type causing the moist air to swirl rapidly as it leaves the condenser throwing the moisture against the shell where it collects and runs down to drain.

Question 26

What is an Aircraft Cooling Turbine Turbine Wheel?

Accepted Answer

An Aircraft Cooling Turbine Turbine Wheel (TURBINE WHEEL,AIRCRAFT COOLING TURBINE) is an item consisting of blades or vanes equally spaced around the periphery or face of a hub, rotor or wheel. Designed to receive the energy of compressed air directed through nozzle vanes and impinged upon the blades of the turbine wheel creating rotary energy and motion. Drives an impeller or fan and discharges cool air. Consists of a single one piece wheel. It is a rotating part of an aircraft cooling turbine.

Aircraft Air Conditioning, Heating, and Pressurizing Equipment - United Kingdom (UK)

Federal Supply Class (FSC): 1660

NATO Supply Classification Class (NSC): 1660

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 Kingdom (UK) - NCB is 99

Page 23 of 39

NSN Format for Aircraft Air Conditioning, Heating, and Pressurizing Equipment
Codified by United Kingdom

Frequently Asked Questions(FAQ) for Federal Supply Class 1660

Supply Items Included in Federal Supply Class 1660

Stock Items From Supply Class 1660 Page 23 of 39