541330 - Engineering Services

334511 - Search, Detection, Navigation, Guidance, Aeronautical, and Nautical System and Instrument Manufacturing

334111 - Electronic Computer Manufacturing

335313 - Switchgear And Switchboard Apparatus Manufacturing

336413 - Other Aircraft Parts and Auxiliary Equipment Manufacturing

488190 - Other Support Activities for Air Transportation

518210 - Data Processing, Hosting, And Related Services

541340 - Drafting Services

541511 - Custom Computer Programming Services

541512 - Computer Systems Design Services

541690 - Other Scientific and Technical Consulting Services

541715 - Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)

541990 - All Other Professional, Scientific, and Technical Services

561410 - Document Preparation Services

811219 - Other Electronic and Precision Equipment Repair And Maintenance

R425 - Support- Professional: Engineering/Technical

AC11 - National Defense R&D Services; Department of Defense - Military; Basic Research

AC12 - National Defense R&D Services; Department of Defense - Military; Applied Research

AC13 - National Defense R&D Services; Department of Defense - Military; Experimental Development

AC31 - National Defense R&D Services; Defense-related activities; Basic Research

AC32 - National Defense R&D Services; Defense-related activities; Applied Research

AC33 - National Defense R&D Services; Defense-related activities; Experimental Development

AR11 - Space R&D Services; Space flight, research and supporting activities; Basic Research

AR12 - Space R&D Services; Space flight, research and supporting activities; Applied Research

AR13 - Space  R&D  Services; Space flight, research and supporting activities; Experimental Development

B505 - Special Studies/Analysis- Cost Benefit

B513 - Special Studies/Analysis- Feasibility (Non-Construction)

B529 - Special Studies/Analysis- Scientific Data

B539 - Special Studies/Analysis- Aeronautical/Space

B541 - Special Studies/Analysis- Defense

B544 - Special Studies/Analysis- Technology

B599 - Special Studies/Analysis- Other

DA01 - IT and Telecom – Business Application/Application Development Support Services (Labor)

DA10 - IT and Telecom - Business Application/Application Development Software As A Service

DB01 - IT and Telecom - High Performance Computing (HPC) Support Services (Labor)

H110 - Quality Control- Weapons

H113 - Quality Control- Ammunition and Explosives

H114 - Quality Control- Guided Missiles

H115 - Quality Control- Aircraft and Airframe Structural Components

H116 - Quality Control- Aircraft Components and Accessories

H118 - Quality Control- Space Vehicles

H119 - Quality Control- Ships, Small Craft, Pontoons, and Floating Docks

H120 - Quality Control- Ship and Marine Equipment

H123 - Quality Control- Ground Effect Vehicles, Motor Vehicles, Trailers, and Cycles

H125 - Quality Control- Vehicular Equipment Components

H159 - Quality Control- Electrical and Electronic Equipment Components

H210 - Equipment and Materials Testing- Weapons

H213 - Equipment and Materials Testing - Ammunition and Explosives

H214 - Equipment and Materials Testing - Guided Missiles

H215 - Equipment and Materials Testing - Aircraft and Airframe Structural Components

H216 - Equipment and Materials Testing - Aircraft Components and Accessories

H218 - Equipment and Materials Testing - Space Vehicles

H219 - Equipment and Materials Testing - Ships, Small Craft, Pontoons, and Floating Docks

H220 - Equipment and Materials Testing - Ship and Marine Equipment

H223 - Equipment and Materials Testing - Ground Effect Vehicles, Motor Vehicles, Trailers, and Cycles

H225 - Equipment and Materials Testing - Vehicular Equipment Components

H259 - Equipment and Materials Testing - Electrical and Electronic Equipment Components

H310 - Inspection - Weapons

H313 - Inspection - Ammunition and Explosives

H314 - Inspection - Guided Missiles

H315 - Inspection - Aircraft and Airframe Structural Components

H316 - Inspection - Aircraft Components and Accessories

H318 - Inspection - Space Vehicles

H319 - Inspection - Ships, Small Craft, Pontoons, and Floating Docks

H320 - Inspection - Ship and Marine Equipment

H323 - Inspection - Ground Effect Vehicles, Motor Vehicles, Trailers, and Cycles

H325 - Inspection - Vehicular Equipment Components

H359 - Inspection - Electrical and Electronic Equipment Components

H910 - Other Quality Control, Testing, and Inspection - Weapons

H913 - Other Quality Control, Testing, and Inspection - Ammunition and Explosives

H914 - Other Quality Control, Testing, and Inspection - Guided Missiles

H915 - Other Quality Control, Testing, and Inspection - Aircraft and Airframe Structural Components

H916 - Other Quality Control, Testing, and Inspection - Aircraft Components and Accessories

H918 - Other Quality Control, Testing, and Inspection - Space Vehicles

H919 - Other Quality Control, Testing, and Inspection - Ships, Small Craft, Pontoons, and Floating Docks

H920 - Other Quality Control, Testing, and Inspection - Ship and Marine Equipment

H923 - Other Quality Control, Testing, and Inspection - Ground Effect Vehicles, Motor Vehicles, Trailers, and Cycles

H925 - Other Quality Control, Testing, and Inspection - Vehicular Equipment Components

H959 - Other Quality Control, Testing, and Inspection - Electrical and Electronic Equipment Components

J010 - Maintenance, Repair, and Rebuilding of Equipment - Weapons

J013 - Maintenance, Repair, and Rebuilding of Equipment - Ammunition and Explosives

J014 - Maintenance, Repair, and Rebuilding of Equipment - Guided Missiles

J015 - Maintenance, Repair, and Rebuilding of Equipment - Aircraft and Airframe Structural Components

J016 - Maintenance, Repair, and Rebuilding of Equipment - Aircraft Components and Accessories

J018 - Maintenance, Repair, and Rebuilding of Equipment - Space Vehicles

J019 - Maintenance, Repair, and Rebuilding of Equipment - Ships, Small Craft, Pontoons, and Floating Docks

J020 - Maintenance, Repair, and Rebuilding of Equipment - Ship and Marine Equipment

J023 - Maintenance, Repair, and Rebuilding of Equipment - Ground Effect Vehicles, Motor Vehicles, Trailers, and Cycles

J025 - Maintenance, Repair, and Rebuilding of Equipment - Vehicular Equipment Components

J059 - Maintenance, Repair, and Rebuilding of Equipment - Electrical and Electronic Equipment Components

J998 - Non-Nuclear Ship Repair (East)

J999 - Non-Nuclear Ship Repair (West)

K010 - Modification of Equipment - Weapons

K013 - Modification of Equipment - Ammunition and Explosives

K014 - Modification of Equipment - Guided Missiles

K015 - Modification of Equipment - Aircraft and Airframe Structural Components

K016 - Modification of Equipment - Aircraft Components and Accessories

K018 - Modification of Equipment - Space Vehicles

K019 - Modification of Equipment - Ships, Small Craft, Pontoons, and Floating Docks

K020 - Modification of Equipment - Ship and Marine Equipment

K023 - Modification of Equipment - Ground Effect Vehicles, Motor Vehicles, Trailers, and Cycles

K025 - Modification of Equipment - Vehicular Equipment Components

K059 - Modification of Equipment - Electrical and Electronic Equipment Components

L010 - Technical Representative - Weapons

L013 - Technical Representative - Ammunition and Explosives

L014 - Technical Representative - Guided Missiles

L015 - Technical Representative - Aircraft and Airframe Structural Components

L016 - Technical Representative - Aircraft Components and Accessories

L018 - Technical Representative - Space Vehicles

L019 - Technical Representative - Ships, Small Craft, Pontoons, and Floating Docks

L020 - Technical Representative - Ship and Marine Equipment

L023 - Technical Representative - Ground Effect Vehicles, Motor Vehicles, Trailers, and Cycles

L025 - Technical Representative - Vehicular Equipment Components

L059 - Technical Representative - Electrical and Electronic Equipment Components

N010 - Installation of Equipment - Weapons

N013 - Installation of Equipment - Ammunition and Explosives

N014 - Installation of Equipment - Guided Missiles

N015 - Installation of Equipment - Aircraft and Airframe Structural Components

N016 - Installation of Equipment - Aircraft Components and Accessories

N018 - Installation of Equipment - Space Vehicles

N019 - Installation of Equipment - Ships, Small Craft, Pontoons, and Floating Docks

N020 - Installation of Equipment - Ship and Marine Equipment

N023 - Installation of Equipment - Ground Effect Vehicles, Motor Vehicles, Trailers, and Cycles

N025 - Installation of Equipment - Vehicular Equipment Components

N059 - Installation of Equipment - Electrical and Electronic Equipment Components

R405 - Support- Professional: Operations Research/Quantitative Analysis

R408 - Support- Professional: Program Management/Support

R410 - Support- Professional: Program Evaluation/Review/Development

R412 - Support- Professional: Simulation

R420 - Support- Professional: Certifications and Accreditations (Other Than Educational Institutions or Info Tech C&A)

R422 - Support- Professional: Market Research/Public Opinion

R425 - Support- Professional: Engineering/Technical

R499 - Support- Professional: Other

R706 - Support- Management: Logistics Support

R707 - Support- Management: Contract/Procurement/Acquisition Support

R799 - Support- Management: Other

92503 - Aeronautical and Aerospace Engineering

03504 - Aircraft Avionics, (Not Otherwise Classified): Navigation Instruments, Transponders, Global Positioning Systems, etc.

03509 - Aircraft Communications Radio

03510 - Aircraft Navigation Radio

03511 - Aircraft Master Control Systems (Computer, etc.)

03515 - Aircraft Radar

03544 - Fire Control Systems, Aircraft

03546 - Flight Instruments: Airspeed, Altimeters, Attitude and Turn and Bank Indicators, etc.

03547 - Flight Simulator

03560 - Instruments and Testers, Airplane

03565 - Instruments and Testers, Helicopter

03594 - Warning Systems, Aircraft: Emergency, Fire, Escape, Ejection, etc.

20515 - Aviation Software, Flight Control, Ground Support, Testing, etc., Microcomputer

22030 - Indicating and Recording Instruments, Equipment and Accessories (Not Otherwise Classified)

25720 - Aviation Equipment, Defense and Homeland Security

25729 - Communications Equipment, Defense and Homeland Security

25777 - Science and Research Services, Military

69079 - Switches, Temperature Pressure

71533 - Drawings and Diagrams: Dimensional, Technical, etc.

71547 - Manuals: Parts, Personnel, Policy, Purchasing, Training, etc., (Not Otherwise Classified)

90514 - Airplane and Helicopter Services (Not Otherwise Classified)

90516 - Airplanes, Helicopters and Accessories Maintenance and Repair Services

90572 - Spacecraft Services (Not Otherwise Classified)

91817 - Aviation Consulting

91821 - Business Consulting

91828 - Computer Hardware Consulting

91829 - Computer Software Consulting

91832 - Consulting Services (Not Otherwise Classified)

91846 - Feasibility Studies, Consulting

91882 - Scientific and Technical Consulting

91887 - Procurement Consulting, Including Specification Development and Contract Consulting

91888 - Quality Assurance and Control Consulting

91890 - Strategic Planning and Consulting

91893 - Security and Safety Consulting

92018 - Computer Aided Design (CAD) Services

92040 - Programming Services, Computer, Including Mobile Device Applications

92044 - Risk Management for Software Development

92045 - Software Maintenance and Support Services

92046 - Software Updating and Upgrading Services

92064 - System Implementation and Engineering Services

92065 - System Requirements Quality Assurance Review

92075 - Technical Writing and Documentation, IT Services

92076 - Testing of Systems Infrastructure, Components or Software, IT Services

92532 - Electronic Engineering

92536 - Engineering Services (Not Otherwise Classified)

92555 - Inspecting, General Engineering

92567 - Mechanical Engineering

92592 - Value Engineering and Value Analysis, Professional

95877 - Project Management Services

99239 - Electrical Systems Testing Services

99255 - Miscellaneous Testing and Calibration Services

99270 - Radar Equipment Testing and Calibration Services

99271 - Radio Instrument Testing and Calibration Services

99275 - Safety Equipment Testing and Calibration Services