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AIRCRAFT MATERIAL GROUPS.

F1 Design.
F2 Expense administration (general).
F3 Planning.
F4 Preparation (incidental to building).
F5 Molds.
F6 Launching and docking.
F7 Construction processes.
F8 Trials.
F9 Blank.
F10 Engine section and nacelle group.
F11 Wing group (airplane).
F12 Tail group (airplane).
F13 Body group (airplane).
F14 Strength hull structure (airship).
F15 Other hull structures (airship).
F16 Fins and rudders (airship).
F17 Car structure (airship).
F18 Gas cells and envelope (airship).
F19 Outer cover (airship).
F20 Inflation gases (airship).
F21 Main propelling machinery (power plant).
F22 Transmission (airship).
F23 Propellers.
F24 Starting system.
F25 Cooling system.
F26 Lubricating system.
F27 Fuel system.
F28 Water-recovery system (airship).
F29 Tools and equipment (aircraft and engine).
F30 Blank.
F31 Instruments and navigational equipment (other than lights).
F32 Control system.
F33 Interior communication.
F34 Furnishing.
F35 Ventilating and heating.
F36 Electric power and lighting.
F37 Auxiliary machinery.
F38 Finish.
F39 Insignia and marking.
F40 Designations.
F41 Ordnance.
F42 Exterior communication.
F43 Parachutes and harness.
F44 Photography and equipment.
F45 Handling, mooring, and towing gear.
F46 Hydraulic system.
F47 Blank.
F48 Special equipment.
F49 Miscellaneous equipment.

Plans in connection with any of the foregoing will be considered as belonging therewith. Correspondence in connection with application of finish to material will be considered as belonging with the parts concerned.

(23)

468759-42-3


24

F1 AIRCRAFT DESIGN.
 
F1-1 General board requirements.
F1-2 Preliminary design.
Area calculations.
Camera obscura.
Design data.
Design memoranda.
Layout and drawings.
Models.
Performance calculations.
Photo elastic stress analysis.
Pressure distribution.
Proportions.
Specification changes.
Static tests.
Strength calculations.
Stress analysis.
Towing basin tests.
Trim calculations.
Turning experiments.
Weight calculations.
Wind tunnel tests.
F1-3 Specifications.
Aircraft specifications.
Army and Navy standard aircraft specifications, general.
Erection specifications.
Fabrication specifications.
Finish specifications.
Insignia and marking specifications.
Material parts.
Material specifications.
Specification changes.
F1-4 Contract requirements.
Award of bid.
Delivery.
Guaranty.
Photographs.
Quantity.
Requisition.
Returned weight statement.
Special requirements.
Strength tests.
F1-5 Final design.
Center of gravity determination.
Erection instructions.
Flight performance tests (other than trials under F-8).
Mock-up.
Photographs (complete airplane on ground, water, and in air).
Return weight statement.
Strength calculations and tests.

25

F2 AIRCRAFT EXPENSE, ADMINISTRATION.
 
F2-1 Cost of inspection offices.
F2-2 Travel cost and expenses.
F2-3 All other expenses allocable directly to the building, conversion, alteration, or repair of aircraft of one model or of a single aircraft.

F3 AIRCRAFT PLANNING.
 
F3-1 Material inspection.
Material readiness for war.
Reports of Board of Inspection and Survey.
Reports of factory or yard estimates up to forwarding final action to factory or yard by bureau.
Reports of statutory surveys.
F3-2 Estimates and drafting (planning).
Drafting not chargeable to specific job order.
Estimates not chargeable to a specific job order.

F4 AIRCRAFT PREPARATION (INCIDENT TO BUILDING).
 
F4-1 Berthing and shed expenses.
Cost of disassembly and transportation to places of
repair.
Scaffolding.
Service changes in connection with the work, air, light, electricity, water, etc.
Staging.

F5 AIRCRAFT MOLDS.
 
F5-1 Dies.
Fixtures.
Jigs.
Laying down in mold loft.
Lines and offsets.
Molds.
Patterns.
Special forms.
Templates.
Patterns and templates for temporary use for repair or alteration jobs to be charged on specific job order under proper group number.

F6 AIRCRAFT LAUNCHING, DOCKING, AND MOORING.
 
F6-1 Preparation.
F6-2 Launching.
Ceremonies.
Report of launching data.
Sponsors.
F6-3 Docking.(For handling trucks and handling equipment see F45.)
F6-4 Mooring.
Mast.
Shed.
Three wire.
To ship.

26

F7 AIRCRAFT CONSTRUCTION PROCESSES.
 
Brazing.
General.
Heat treatment.
Riveting.
Soldering.
Welding.
X-ray analysis and equipment.
Violet rays.
Hardness tester.

F8 AIRCRAFT TRIALS.
 
F8-1 Builder's trials.
F8-2 Preliminary acceptance trials.
Trials by Board of Inspection and Survey.
Trials by Bureau of Aeronautics (experimental).
Trials by contractor.
F8-3 Commissioning trials.
F8-4 Final acceptance trials.
F8-5 Post repair trials.

F9 (Blank.)
 

F10 ENGINE SECTION AND NACELLE GROUP.
 
F10-1 Engine mount.
Vibration absorbing devices.
Firewall.
Engine ring cowl and flaps.
Engine nose cowl and shutters.
Fairings.
F10-2 Nacelle.
Structure.
Cowling and covering.
Access doors.
Engine support,
Firewall.
Nacelle mounting.
Standard parts.
Supports for oil coolers.
Supports for oil tanks.

F11 WING GROUP (AIRPLANE).
 
F11-1 Wings.
Beams.
Bearings, pulleys, fair-leads, and attachments for surface control loads.
Blocks.
Cabane struts.
Center section panels.
Compression struts.
Covering.
Drag wires (internal).
Fittings (external).
Fittings (internal).
Inspection doors and windows.
Inspection plates.
Leading edge.
Bibs.

27

F11 WING GROUP (AIRPLANE)-Continued.
 
F11-1 Wings-Continued.
Walkways.
Standard parts (bolts, nuts, etc.).
Tip bows.
Trailing edge.
Wing tips.
F11-2 Ailerons.
Balances.
Beams.
Blocks.
Compression struts.
Control horns.
Covering.
Drag wires (internal).
Fittings (external).
Fittings (internal).
Inspection doors and windows.
Interaileron connections.
Leading edge.
Ribs.
Standard parts (bolts, nuts, etc.).
Tip bows.
Torque tubes.
Trailing edge.
Trimming tabs.
F11-3 (Blank.)
F11-4 Struts and wires.
F11-5 Flaps.
Covering.
Ribs.
F11-6 Slots.

F12 TAIL GROUP (AIRPLANE).
 
F12-1 Stabilizers.
Adjustable stabilizer.
Beams.
Bearings and connections for attachment of stabilizer-adjusting mechanism.
Blocks.
Compression struts.
Covering.
Drag wires (internal).
Fittings (external).
Fittings (internal).
Inspection doors and windows.
Leading edge.
Ribs.
Standard parts (bolts, nuts, etc.).
Tip bows.
Trailing edge.
F12-2 Elevators.
Balances.
Beams.
Blocks.
Compression struts.
Control horns.
Covering.
Drag wires (internal).

28

F12 TAIL GROUP (AIRPLANE)-Continued.
 
F12-2 Elevators-Continued.
Fittings (external).
Fittings (internal).
Inspection doors and windows.
Leading edge.
Ribs.
Standard parts (bolts, nuts, etc.).
Tip bows.
Torque tubes.
Trailing edge.
Trimming tabs.
F12-3 Fins.
Beams.
Blocks,
Compression struts.
Covering.
Drag wires (internal).
Fittings (external).
Fittings (internal).
Inspection doors and windows.
Leading edge.
Ribs.
Standard parts (bolts, nuts, etc.).
Tip bows.
Trailing edge.
F12-4 Rudders.
Balances.
Beams.
Blocks.
Compression.
Control horns.
Covering.
Drag wires (internal).
Fittings (external).
Fittings (internal).
Inspection doors and windows.
Leading edge.
Ribs.
Standard parts (bolts, nuts, etc.).
Tip bows.
Torque tubes.
Trailing edge.
Trimming tabs.
F12-5 Struts and wires.

F13 BODY GROUP (AIRPLANE).
 
F13-1 Body.
Fuselage.
Brace wires.
Cockpit enclosures.
Cowling and covering.
Doors and windows.
Engine mounting.
Fairings.
Fire bulkhead.
Fittings.
Foundations for installation.
Head rest.

29

F13 BODY GROUP (AIRPLANE)-Continued.
 
F13-1 Body-Continued.
Fuselage-Continued.
Integral tail stubs.
Integral wing stubs.
Longerons.
Plating.
Stanchions.
Standard parts.
Steps (grips).
Turn-over structure.
Windshields.
Hull.
Blocks.
Bombing window.
Booms.
Braces.
Bulkhead.
Coaming.
Edgings and rubbing strips.
Fairing.
Fittings.
Flooring.
Foundations for installations.
Frames.
Handhole covers.
Keel.
Keelson.
Longitudinals.
Outrigger.
Planking.
Plating.
Stanchions,
Standard parts.
Step wedge.
Stringers.
Walking way.
Water rudder and controls.
Wire.
F13-2 Landing gear (land type).
Land chassis.
Axle.
Fittings.
Parking brakes.
Retracting mechanisms.
Struts.
Tires and tubes.
Tricycle type.
Wheels and brake wheels.
Wires.
Tail skids.
Fittings.
Shoe.
Skid proper.
Tail wheels.
Wing skids.
F13-3 Landing gear (water type).
Blocks.
Braces.

30

F13 BODY GROUP (AIRPLANE)-Continued.
 
F13-3 Landing gear (water type)-Continued.
Bulkheads.
Drain plugs.
Edgings and rubbing strips
Fittings.
Float retracting mechanism.
Frames.
Handhole covers.
Hull keel.
Keelson.
Longitudinals.
Main floats.
Planking.
Plating.
Recovery book.
Stanchions.
Standard parts.
Step wedge.
Stringers.
Strut and wires.
End fittings.
Fairing.
Struts.
Wires.
Walking way.
Water rudder and controls.
Wing floats.
F13-4 Catapulting.
Fittings.
Jet propulsion.
Provision for.
Reinforcements.
F13-5 Arresting equipment.
Axle hooks.
Retrieving gear.
Trailing hooks.
F13-6 Flotation gear.
Bags.
CO2 cylinders.
Inflation equipment.
Integral flotation.
Testing of.
F13-7 Brakes.
Brake controls.
F13-8 Devices for landing on airships.
F13-9 Landing gear (amphibian type).
Main floats.
Operating gear.
Wheels.
F13-10 Landing gear (ski type).
F13-11 Shock absorbers.
Amphibian.
Oleo.
General.
Landing gear.
Cord.
Oleo.
Rubber disks.

31

F13 BODY GROUP (AIRPLANE)-Continued.
 
F13-11 Shock absorbers-Continued.
Tail wheel.
Cord.
Oleo.
F13-12 Barrier crash provision.
Provision on landing gear.

F14 STRENGTH HULL STRUCTURE (AIRSHIP).
 
F14-1 Bow.
Axial cable and fittings.
Bow cap.
Bow mooring spindle.
Bow mooring structures.
Bow stiffeners.
Cloth taping.
Framing.
Gangplanks.
Keel walkway.
Miscellaneous.
Outrigger bow mooring spindle.
Thrust bearing and bow mooring spindle.
Wiring.
F14-2 Main body.
Axial cable and fittings.
Cloth taping.
Deck trolley attachments.
Framing.
Girders (lattices).
Keel.
Wiring.
F14-3 Stern.
Flagstaff.
Framing.
Miscellaneous.
Wiring.

F15 OTHER HULL STRUCTURES (AIRSHIP).
 
F15-1 Hull reinforcement over propellers.
Fabric and lacing.
Fittings.
Framing.
Wiring.
F15-2 Auxiliary corridors.
Cord netting.
Framing.
Miscellaneous structure and fittings.
Wiring.
F15-3 Climbing shafts and platforms.
Auxiliary structure and fittings.
Framing.
Gas pressure netting and covering.
Wiring.
F15-4 Officers' and crew's quarters and water-closet.
Auxiliary structure and fittings.
Fabric.
Framing.
Furniture.
Netting.
Wiring.

32

F15 OTHER HULL STRUCTURES (AIRSHIP)-Continued.
 
F15-5 Exhaust trunks, hoods, and hull supports.
Auxiliary structure and fittings (wood, fabric, etc.).
Framing.
Netting.
F15-6 Access hatches.
Framing.
Operating gears and fittings.
F15-7 Mooring and handling foundations.
Auxiliary structure and fittings.
Framing.
Wiring.
F15-8 Ordnance foundations.
Auxiliary structure and fittings.
Framing.
Wiring.
F15-9 Cordage gas-pressure netting.
Fittings.
Panels.
F15-10 Wire gas-pressure netting.
Fittings.
Panels.
F15-11 Water-ballast system.
Ballast bags.
Discharge buckets.
Filling pipes and fittings.
Hoods and supports.
Operating gear.
Suspension.
F15-12 Sand-ballast system.
Bags.
Discharge.
Hoppers.
Operating gear.
Racks.
Scoops.
Suspension.
F15-13 Other foundations and structure not classified elsewhere.
Framing.
Fittings.
Wiring.
F15-14 Arresting and launching of aircraft aboard lighter-than-aircraft.

F16 PINS AND RUDDERS (AIRSHIP).
 
F16-1 Fins.
Castings.
Fittings.
Framing.
Internal wire bracing.
Pintles.
Suspension wiring.
F16-2 Rudders.
Castings.
Fittings.
Framing.
Pintles.
Wiring.

33

F17 CAB STRUCTURE (AIRSHIP).
 
F17-1 Car structure.
Buffer bags.
Fabric and other coverings (glass, cellon, etc.).
Fittings.
Framing.
Miscellaneous structure and fittings.
Outside plating.
Wiring.
F17-2 Car suspension.
Cable and fittings.
Release gear.
Struts and fittings.
F17-3 Observation baskets.

F18 GAS CELLS AND ENVELOPE (AIRSHIP).
 
F18-1 Gas cells (rigid).
Fabric. (See F18-6.)
Supports.
Valves and fittings.
F18-2 Gas envelopes (nonrigid.)
Fabric.
Internal rigging.
Nose stiffeners and battens.
Patches.
Pressure tubes.
Rip panels.
Valve and fittings.
F18-3 Ballonets.
Fabric.
Internal rigging.
Miscellaneous fittings.
Valves.
F18-4 Gas manifolds.
Fabric.
Miscellaneous fittings.
F18-5 Air scoops.
Check valves.
Manifold.
Scoops.
F18-6 Gas-cell fabric.
Goldbeater's skin.
Substitutes for goldbeater's skin.
Aluminum foil.
Cellophane.
Cement.
Rubber latex.
Tests.

F19 OUTER COVER (AIRSHIP).
 
F19-1 Bow.
Attachments.
Cement.
Dopes.
Fabric panels.
Lacing cord.
Lacing edges.
Scaling strips.

34

F19 OUTER COVER (AIRSHIP)-Continued.
 
F19-2 Main body.
Attachments to wiring.
Cement.
Dope.
Fabric panels.
Lacing cord.
Sealing strips.
F19-3 Stern.
Attachments.
Cement.
Dope.
Fabric panels.
Lacing cord.
Lacing edges.
Sealing strips.

F20 INFLATION GASES.
 
F20-1 Hydrogen.
Ferrosilicon.
Caustic soda.
F20-2 Helium.

F21 AIRCRAFT MAIN PROPELLING MACHINERY.
 
F21-1 Internal-combustion engine.
Battery-coil system.
Breaker points.
Distributor.
Bearings.
Cam-shaft and valve-operating assembly.
Cam and hub.
Push rods.
Rocker arms.
Tappets.
Carburetors.
Hot-air heaters and hot spots.
Crankcase.
Crankshafts.
Cylinders.
Fuel pumps, engine-driven.
Fuel pumps (integral with engine).
Gears.
Generators.
Gun control.
Gun-control gears.
Gun-control mechanism.
Impeller clutch band.
Induction system (integral with engine).
Manifolds and intake pipes.
Magnetos.
Armature.
Breaker points.
Coils.
Distributor blocks.
Oil-pump system (integral with engine).
Internal oil piping and connections.
Oil feed bearing bracket assembly.
Pistons.
Pressure bafflers.

35

F21 AIRCRAFT MAIN PROPELLING MACHINERY-Continued.
 
F21-1 Internal-combustion engine-Continued.
Propeller hubs.
Rods, connecting.
Spark plugs.
Starter drive.
Starter jaw.
Superchargers.
Centrifugal.
General electric.
Moss.
Roots blower.
Valve type.
Switches.
Tachometer drive.
Valves, valve spring, and retainers.
Water-pump system (integral with engine).
Wiring, ignition (integral with.-engine).
Radio shielding.
F21-2 Engine accessories and parts.
Exhaust manifold, stacks, or collector rings.
Exhaust muffler.
Foundation bolts.
F21-3 Engine controls.
Altitude adjustment control levers.
Compression relief gear.
Reach rods, connections, and fittings.
Spark-control levers.
Throttle.
F21-4 Internal-combustion turbines.
F21-5 Steam engines (reciprocating).
F21-6 Steam turbines.
F21-7 Fuel-oil engines.
F21-8 Engine test stands.
Electric cradle dynamometer.
Fan.
Fixed.
Torque reaction.
Water brake.

F22 AIRCRAFT TRANSMISSION (AIRCRAFT).
 
F22-1 Gearing and shafting engine to propeller.
Brake.
Clutches.
Flywheel (separate).
Propeller hub.
Reduction and reversing gears.
Shafting and bearings.
F22-2 Control.
Cables.
Cranks.
Fittings.
Levers.
Rods.

F23 AIRCRAFT PROPELLERS.
 
F23-1 Propellers.
Anti-icing devices on propeller.
Controls.

36

F23 AIRCRAFT PROPELLERS-Continued.
 
F23-1 Propellers-Continued.
Ordinary propellers.
Propeller balancing machines.
Propeller spinners.
Reversing propellers.
Variable pitch propellers.

F24 AIRCRAFT STARTING SYSTEM.
 
F24-1 Electric starter (direct geared or inertia).
Back-fire mechanism.
Battery.
Crank.
Engaging mechanism.
Housing and brackets.
Motor.
Reduction gears.
Switch.
F24-2 Gas engine starter.
Back-fire mechanism.
Crank.
Engaging mechanism.
Gas engine (aircraft starter).
Gearing (starter).
Housing and brackets.
F24-3 Hand starters (direct geared and inertia).
Back-fire mechanism.
Crank.
Engaging mechanism.
Housing and brackets.
Reduction gears.
F24-4 Air starter.
Air distributor.
Back-fire mechanism.
Compression.
Engaging mechanism.
Housing and brackets.
Motor.
Piping.
Reduction gear.
Starting valve.
Storage tank.
F24-5 Primer.
Cold-weather starting.
Valves.
Piping.
Pumps.
F24-6 Starter magneto.
Booster.
Housing.
Hand crank.
Operating gears.
Remote control (pull type).
F24-7 Cartridge starters.
Intake tube cartridges.

37

F25 AIRCRAFT COOLING SYSTEM.
 
F25-1 Water radiator.
Connections.
Core.
Fittings.
Header and expansion tanks.
F25-2 Temperature control.
Air scoops.
Connections.
Fittings.
Operating gear (levers, gears, rods, wires, etc.).
Shutters.
F25-3 Water piping.
Connections.
Fittings.
Piping (metallic and nonmetallic).
F25-4 Radiator water containers.
Connections.
Fittings.
Overflow tanks.
Piping.
Storage containers (bags).
Suspension.

F26 AIRCRAFT LUBRICATION SYSTEM.
 
F26-1 Oil tank.
Connections.
Fittings.
Portable containers.
Service tanks.
Storage tanks.
Suspension (straps).
F26-2 Oil radiator.
Boxes.
Connections.
Core.
Fittings.
Oil regulators.
F26-3 Oil heaters and oil coolers.
Coils.
Connections.
Fittings.
Oil temperature control and check valves.
Oil sumps.
Warm-up compartments.
F26-4 Oil piping.
Connections.
Fittings.
Manifolds.
Piping.
Strainer.

F27 AIRCRAFT FUEL SYSTEM.
 
F27-1 Fuel tanks.
Connections.
Dump valves.
Filler caps.
Fittings.

38

F27 AIRCRAFT FUEL SYSTEM-Continued.
 
F27-1 Fuel tanks-Continued.
Fixed service or gravity tanks.
Fixed storage tanks.
Releasing devices.
Slip storage.
F27-2 Fuel piping.
Connections.
Fittings.
Fuel cocks.
Fuel pressure regulators (relief valves)
Piping.
Strainers and niters.
F27-3 Hand pumps.
Connections.
Crank.
Fittings.
Pedals.
Piping.
Pump.
F27-4 Power pumps (not integral with engine).
Connections.
Fittings.
Gearing.
Motor.
Piping.
Pump.
Windmill.

F28 AIRCRAFT WATER RECOVERY SYSTEM.
 
F28-1 Condensers.
F28-2 Piping.
Air.
Connections.
Exhaust.
Fittings.
Water.
F28-3 Pumps.
Air.
Water.
F28-4 Separators (for cleaning condensate).
F28-5 Control mechanism.

F29 TOOLS AND EQUIPMENT (AIRCRAFT AND ENGINE).
 
F29-1 Tools and equipment.
Bearing reaming equipment.
Engine overhaul stands.
Fixed.
Portable.
Valve refacing and reseating equipment.
F29-2 Material for repairs.
Spare material.
Spare parts.
F29-3 Stock material and parts.
Naval Aircraft Factory standard parts.
Material not otherwise classified.

F30 (Blank)
 

39

F31 AIRCRAFT INSTRUMENTS AND NAVIGATIONAL EQUIPMENT (OTHER THAN LIGHTS).
 
F31-1 Instruments (other than navigational, electrical, test, and calibration).
Accelerometer.
Air-speed indicator.
Air-speed indicator tube (Pitot static tube).
Air thermometer.
Altimeter.
Automatic pilot.
Bank indicator.
Binocular.
Carburetor thermometers.
Clock.
Directional gyro.
Engine cylinder thermometer.
Engine gauge unit.
Fuel and oil pressure gauges.
Fuel flowmeter.
Fuel quantity gage.
Inclinometer.
Manifold pressure gage.
Oil thermometer.
Tachometer.
Turn indicator.
Rate of climb indicator.
F31-2 Instrument flying equipment (blind flying and night flying, except lights).
F31-3 Navigation instruments and equipment.
Chart boards.
Charts (maps),
Chronometers.
Compass (earth inductor).
Compass (magnetic).
Drift computer.
Drift indicator.
Drift sight.
Ground speed indicator.
Navigational computer,
Navigational watch.
Octant.
Plotting board.
Sextants and octants.
Stop watch.
F31-4 Flight-test instruments.
Air-speed recorder.
Air-temperature thermometer.
Strut thermometer.
Barograph.
Recording tachometers.
Thermograph.
F31-5 Calibration (testing) equipment.
Air-speed indicator calibrator.
Altimeter calibrator.
Mercurial barometer.
Tachometer calibrator.
Thermometer calibrator.

466759-42-4

40

F32 CONTROL SYSTEM (AIRCRAFT).
 
F32-1 Rudder controls.
Balance springs.
Fairleads, pylons, sheaves, and fittings.
Foot bars.
Leads (chain, wire, cable, solid wire, and fittings).
Operating rods, tubes, etc.
Pedals.
Preventer lines.
Reducing gearing.
Steering engines.
Steering stands.
Steering wheels.
Supports.
Telemotors.
Tension adjustment devices.
Transmission shafting.
F32-2 Elevator controls.
Balance springs.
Fairleads, pylons, sheaves, and fittings.
Leads (chain, wire, cable, solid wire, and fittings).
Operating rods, tubes, etc.
Posts.
Preventer lines.
Reduction gearing.
Steering engines.
Steering stands.
Steering wheels.
Telemotors.
Tension adjustment devices.
Transmission shafting.
Yoke supports.
F32-3 Aileron controls.
Cables.
Fairleads, etc.
Pulleys, bearings.
Rods, tubes, etc.
Stick.
Supports.
Torque tubes.
Wheel.
F32-4 Stabilizer controls.
Bearings.
Driver.
Loads.
Sprockets.
Wheel or levers.
F32-3 Wing form controls.
Angle of incidence.
Slotting wing.
Swelling wing.
Each of the above can be divided into control boxes, wheels, reduction gearing, shafting, operating rods, tubing, leads, fairleads, pulls, etc.
F32-4 Stabilizer controls.
Bearings.
Driver.
Loads.
Sprockets.
Wheel or levers.
F32-5 Wing form controls.
Angle of incidence.
Slotting wing.
Swelling wing.
Each of the above can be divided into control boxes, wheels, reduction gearing, shafting, operating rods, tubing, leads, fairleads, pulls, etc.
F32-6 Minor controls.
Air scoops.
Air valves.
Gas valves.
Hatches.

41

F32 CONTROL SYSTEM (AIRCRAFT)-Continued.
 
F32-6 Minor controls-Continued.
Manifolds.
Hopes.
Sand ballast.
Traps.
Water ballast.
Each of the above can be divided into control boxes, wheels, reduction gearing, shafting, operating rods, tubing, leads, fairieads, pulls, etc.

F33 INTERIOR COMMUNICATION (AIRCRAFT).
 
F33-1 Interior communication.
Air message pads and holders.
Klaxons.
Leads and fittings.
Printator.
Telautographs.
Telegraphs, control.
Telephones.
Voice tubes and fittings.

F34 FURNISHINGS (AIRCRAFT.)
 
F34-1 Living quarters furnishings.
Cushions.
Hammocks.
Linen.
Lockers.
Mattresses.
Personal equipment and bags.
Sleeping bags.
Table chairs.
Toilet fixtures.
F34-2 House and office furnishings.
Desks and chairs.
File eases.
Typewriters.
F34-3 Messing equipment.
Cooking utensils (portable).
Galley ranges.
Kettles and boilers.
Lockers for gear.
Messing gear.
Refrigerators.
Vacuum bottles.
F34-4 Sanitation.
Distillers.
Fresh-water storage and fixtures.
Lavatories and accessories.
Water breakers.
Water-closet fixtures.
F34-5 Medical.
First-aid kits.
Medicines and dressings.
Medicine cases.
Miscellaneous medical equipment.
F34-6 Fixed equipment.
Baggage compartments.
Carbon dioxide.

42

F34 FURNISHINGS (AIRCRAFT)-Continued.
 
F34-6 Fixed equipment-Continued.
Carbon tetrachloride.
Emergency equipment
Fire extinguishers.
Flooring.
Floorcovering.
Instrument board
Lockers.
Message carrier.
Mirrors.
Miscellaneous living equipment.
Portable platforms and ladders.
Seats.
Synthetic plastics.
Upholstery.

F35 VENTILATING AND HEATING (AIRCRAFT).
 
F35-1 Ventilation system, apparatus, and accessories.
Air scoops.
Cowls.
Ducts.
Fans.
Hatches.
Miscellaneous fittings.
Shutters.
Ventilating sets.
F35-2 Heating apparatus and accessories.
Coils, exhaust gases.
Coils, hot water.
Electric heaters.
F35-3 Cabin supercharging.

F36 ELECTRIC POWER AND LIGHTING (AIRCRAFT).
 
F36-1 Electric power generators.
Foundations.
Gas-engine-driven generators.
Generators.
Spare parts (generators).
F36-2 Electric power distribution.
Circuit breakers.
Conduits.
Cut-outs.
Fuses.
Insulating material.
Insulators.
Junction boxes.
Power leads.
Rheostats.
Switchboards.
Switches.
Transformers.
F36-3 Batteries.
Dry-cell storage batteries.
Permanent storage batteries.
Portable storage batteries.
Storage-battery boxes,
F36-4 Motor generators and similar apparatus.

43

F36 ELECTRIC POWER AND LIGHTING (AIRCRAFT)-Con.
 
F36-5 General lighting.
Appliances.
Fixtures.
Wiring.
F36-6 Portable lights.
Flash lights and batteries.
F36-7 Float lights.
Electric.
F36-8 Interior lights.
Compass lights.
Dome lights.
Instrument board lights.
F36-9 Signal lights.
Blinkers.
Pyrotechnic signal lights.
Recognition or identification.
F36-10 Navigating lights.
Anchor lights.
Running lights.
F36-11 Landing lights (aircraft).
Electric wing tip flares.
F36-12 Electrical instruments.
Ammeters.
Charge and discharge indicators.
Voltmeters.

F37 AUXILIARY MACHINERY (AIRCRAFT).
 
F37-1 Mooring machinery.
Electric winches.
Hand winches.
F37-2 Auxiliary pressure system.
Airlines.
Blowers.
Drive.
Ducts,

F38 FINISH.
 
F38-1 Dope.
Acetate.
Dope solvent.
General.
Nitrate.
Pigmented.
F38-2 Painting.
Antifouling paints.
Bituminous.
Cleaning compound.
Dope proof.
Enamels.
Gasoline proof.
General.
Insignia colors.
Interior finish.
Lacquers.
Paint and varnish remover.
Painting on fabric.
Painting on wood.
Painting on metals.

44

F38 FINISH-Continued.
 
F38-2 Painting-Continued.
Primer.
Radium luminous paints.
Bust preventative compound
Seam compound.
Varnish.
F38-3 Finish processes.
Anodic.
Brushing.
Cadmium.
Chromium.
Cleaning compounds.
Copper.
Galvanizing.
General.
Hot oil dip.
Lead plating.
Metal spray coating.
Nickel.
Oxidizing.
Parkerizing.
Pickling.
Plating.
Polishing.
Rubberized coating.
Salt spray testing.
Sand blasting.
Scraping.
Silver.
Sodium silicate.
Tin.
Zinc.
F38-4 Temporary preservation coating (for shipping and storage).
General.
Oil.
Slushing compounds.
F38-3 Fireproofing.
Fabric.
General.
Wood.

F39 INSIGNIA AND MARKING.
 
F39-1 Insignia.
Airplane.
Airship.
Balloon.
General.
F39-2 Distinguishing marks.
Airplane.
Airship.
Balloon.
General.
F39-3 Draft marks and gauges.
General.
Level lines.
Load water lines.

45

F39 INSIGNIA AND MARKING-Continued.
 
F39-4 Labeling (marking).
General.
Information plates.
Marking for electric circuit.
Marking for piping.
Air.
Fuel.
Helium.
Hydrogen.
Oil.
Water.
Name plates.
Serial numbers.
Tagging.
F39-5 Camouflage.
Airplane.
Airship.
Balloon.
General.

F40 DESIGNATING.
 
F40-1 Designations.
Change in designation.
Class.
Model.
Name.
Nomenclature.
Number.
Type.

F41 AIRCRAFT ORDNANCE.
 
F41-1 Aircraft machine guns.
Barrels.
Breech mechanism.
Feeding mechanism.
Operating mechanism.
Trigger mechanism.
F41-2 Aircraft machine gun controls.
Drive unit.
Firing keys.
Impulse cable.
Impulse generators.
Operating cable.
Switches.
Trigger motor.
F41-3 Aircraft machine gun sights.
Sights (free gun).
Optical sight.
Sights, open (fixed gun).
Sights, telescopic.
Spotting glasses.
F41-4 Aircraft machine gun mounts.
Mounts, fixed gun.
Mounts, flexible gun.
F41-5 Aircraft machine gun ammunition carriers.
Ammunition boxes.
Belts.

46

F41 AIRCRAFT ORDNANCE-Continued.
 
F41-5 Aircraft machine gun ammunition carriers-Continued.
Chutes.
Ejection boxes.
Pans.
F41-6 Aircraft bombs.
Body.
Bursting charge.
Demolition.
Exploders.
Fuses, bomb.
Fuses,,delay.
Fuses, instantaneous.
Fuses, nose.
Fuses, tail.
Incendiary.
Nose.
Reserve aircraft bombs.
Shrapnel.
Stabilizers.
Tail.
Vanes.
F41-7 Aircraft bomb racks.
Arming and safety devices.
Release Controls.
Releases.
F41-8 Aircraft bomb sights.
Bearings.
Bubbles, bomb sight.
Directors system.
High altitude.
Low altitude.
Mounts.
Operating mechanism.
Repair kits (bombsights).
Stabilizers.
F41-9 Aircraft torpedoes.
Devices for aircraft launching of torpedoes.
Director.
Drogues.
Racks.
Release controls.
Releases.
Reports of launching torpedoes from aircraft.
F41-10 Training and target practice material (ordnance).
Bombing.
Bombs, dummy.
Camera gun films.
Camera guns.
Gunnery.
Machine guns (ground type).
Rakes.
Reels.
Releases.
Subcaliber bombs.
Targets, fixed.
Targets, fixed aerial.
Targets, moving aerial.
Targets, sleeves.

47

F41 AIRCRAFT ORDNANCE-Continued.-Continued.
 
F41-10 Training and target practice material-Continued.
Towing cable.
Trips.
F41-11 Small arms and equipment.
Pistols.
Shotguns.
F41-12 Gas and smoke warfare apparatus.
F41-13 Armor and allied protective materials.
F41-14 Aircraft machine gun synchronizers.
Impulse generator.
Solenoids.
For the purpose of cost repair and job order numbering F41 will be used, but for classifying correspondence the following will be handled under the file numbers indicated:
Aircraft ammunition (service, tracer, armor-piercing, armor-piercing incendiary, incendiary, armor-piercing tracer), S78-11.
Flares, aircraft. (See S70-1 and F36-11.)
Float lights, aircraft. (See S70-1 and F36-7.)
F41-15 Pyrotechnics.
Aircraft parachute flares.
Float lights.
Smoke candles.
Very's pistol and ammunition.

F42 EXTERIOR COMMUNICATION (AIRCRAFT).
 
F42-1 Aircraft radio.
Amplifier.
Antennae.
Batteries.
Electrical bonding.
Radio compass.
Radio generator mounts.
Receiver sets.
Telephone.
Transmitter sets.
Wiring and wiring appliances.
For correspondence on radio installation for a particular airplane or type of airplane, the above number will be used combined with airplane or type number. Where multiplicity of divisions of correspondence on airplane radio apparatus is required, as at Navy yards. Bureau of Aeronautics, or Bureau of Ships, etc., subtitles may be obtained by using titles and numbers listed in Bureau of Ships radio pamphlet RE-1A-1065, items 18 to 89 inclusive. File numbers will be obtained by combining with the standard file number F42-1, the class number as listed in that pamphlet. All titles contained in pamphlet will be shown in Filing Manual index.
F42-2 Sound signals.
F42-3 Visual signals.
F42-4 Pigeons and equipment.

48

F43 PARACHUTES AND HARNESS.
 
F43-1 Parachutes.
Containers.
Linen tapes.
Sails.
Silk cloth.
Silk cords.
Silk tapes.
Substitutes for silk cloth.
Thread.
F43-2 Parachutes harness (webbing, etc.).

F44 PHOTOGRAPHY AND EQUIPMENT (AIRCRAFT).
 
F44-1 Photography.
Motion-picture.
Still.
F44-2 Photographic supplies and equipment.
Acid and chemicals.
Cameras (motion-picture).
Cameras (still).
Developing and printing.
Films and containers.
Instructional films.
Lantern slides.
Lenses.
Lockers.
Paper.
Plates.
Tripods.
F44-3 Aerial photographs.
Record.
Structural.

F45 HANDLING, MOORING. AND TOWING GEAR.
 
F45-1 Anchors.
Anchors and grapnels.
Drogues.
Sea drags.
F45-2 Ropes, cables, and lines.
Blocks, sheaves, fair-leads.
Cable fittings.
Drag ropes.
Hauling cables.
Handling lines.
Line fittings.
Mooring cables.
Rope fittings.
Send-off poles.
F45-3 Mooring devices (does not include mast or docking carriages).
Grapnel (mooring).
Mooring point.
Rosendahl's method.
Taxying car.
Three wire.
F45-4 Hoisting slings (airplane).
F45-5 Docking devices (aircraft).
Docking carriages.
Docking rails.
Docking trolleys.

49

F45 HANDLING, MOORING, AND TOWING GEAR-Con.
 
F45-6 Towing.
Towing cables.

F46 HYDRAULIC SYSTEM.
 

F47 (blank.)
 

F48 SPECIAL EQUIPMENT (AIRCRAFT).
 
F48-1 Beaching gear.
Ballast.
Brakes.
Flotation tanks.
Steering devices.
Trucks.
Wheels.
F48-2 Anti-icing equipment.
Containers for anti-icing fluid.
Propeller anti-icing fluid.
Pumps.
Rubber boots for wings and tail surfaces.
Tubing and fittings.
F48-3 Special hoists and platforms.
Bomb hoists (not integral).
Bomb loading platforms.
Engine hoists.
Engine maintenance platforms.
Propeller hoists.

F49 MISCELLANEOUS EQUIPMENT (AIRCRAFT).
 
F49-1 Oxygen apparatus.
Breathing apparatus.
Oxygen regulators.
Oxygen tanks.
F49-2 Gas masks (aircraft).
F49-3 (Blank).
F49-4 Crew equipment.
Asbestos clothing.
Baggage.
Bulletproof vests.
Extra clothing.
Face masks.
Flying suits.
Gauntlets and gloves.
Goggles.
Helmets.
Miscellaneous.
Waders.
F49-5 Safety belts.
F49-6 Life preservers.
F49-7 Portable instruments.
Binoculars.
Megaphones.
Planimeters.
Protractors, dividers, etc.
Reading glasses.
Rulers, parallel.
Sextants.
Slide rules.
F49-8 Emergency propulsion sails.
F49-9 Engine and cockpit covers.

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Version 2.00, 15 Sep 2006