PSC 1660: Aircraft Air Conditioning, Heating, and Pressurizing Equipment
1660 is the product and service code (PSC) federal agencies use for aircraft air conditioning, heating, and pressurizing equipment, in the aerospace craft components and accessories group. Here are the contracts open under it now, the NAICS codes it pairs with, and who buys and wins this work.
- Open contracts now
- 42
- Spending, FY2026
- $170.2 million
- Share to small businesses
- 48%
Open contracts with PSC 1660, due soonest
- TURBINE,AIRCRAFT CO
✦ DLA Aviation at Oklahoma City posted a combined synopsis/solicitation for an aircraft turbine part under solicitation SPRTA1-26-Q-2266.
Due in 2 daysOct 12, 2026
- REGULATOR, AIR PRESS
✦ DLA Aviation at Oklahoma City is buying an air pressure regulator (aircraft part, solicitation SPRTA1-26-Q-1404).
Due in 2 daysOct 12, 2026
- 05F | C/KC-135 | COUPLING, FLEXIBLE
✦ The Defense Logistics Agency (DLA Aviation) plans an unrestricted, 3-year indefinite quantity contract for a flexible coupling (insulation blanket) used on C/KC-135 aircraft,…
Due in 3 daysOct 12, 2026
- TURBINE,AIRCRAFT CO_End_Item_E-3_NSN_1660011222577_PN_753589-2
Due in 3 daysOct 13, 2026
- HEAT EXCHANGER,FLUI, IN REPAIR/MODIFICATION OF
✦ NAVSUP Weapon Systems Support wants quotes to repair a fluid heat exchanger (P/N 70207-000-1, NSN 1660-01-454-5010) and return it to ready-for-issue condition.
Due in 4 daysOct 13, 2026
- DUCT ADAPTER, IN REPAIR/MODIFICATION OF
✦ NAVSUP Weapon Systems Support is soliciting repair or modification of a duct adapter (aircraft part, PSC 1660).
Due in 6 daysOct 15, 2026
Where 1660 sits in the PSC Manual
- Category: Product
- Group 16: Aerospace Craft Components and Accessories
- Code 1660: Aircraft Air Conditioning, Heating, and Pressurizing Equipment
NAICS codes used with PSC 1660
The NAICS code on a contract sets the size standard for who counts as small. These are the codes agencies pair with 1660 most often:
| NAICS | Industry | Spent, last 3 years |
|---|---|---|
| 336413 | Other Aircraft Parts and Auxiliary Equipment Manufacturing | $306.9 million |
| 336411 | Aircraft Manufacturing | $122 million |
| 336412 | Aircraft Engine and Engine Parts Manufacturing | $26 million |
| 334511 | Search, Detection, Navigation, Guidance, Aeronautical, and Nautical System and Instrument Manufacturing | $20.6 million |
| 333999 | All Other Miscellaneous General Purpose Machinery Manufacturing | $16.7 million |
| 334412 | Bare Printed Circuit Board Manufacturing | $14 million |
Who buys under PSC 1660
Agencies with the most contract dollars under 1660 over the last three fiscal years, per USAspending.gov:
| Agency | Obligated |
|---|---|
| Defense Logistics Agency | $414.3 million |
| Department of the Navy | $90.6 million |
| Department of the Air Force | $29.4 million |
| Federal Acquisition Service | $9.7 million |
| U.S. Coast Guard | $9.4 million |
| Department of State | $101,916 |
| Department of the Army | $100,895 |
| National Oceanic and Atmospheric Administration | $34,311 |
On open notices right now, the most 1660 work comes from Dept of Defense and Department of Homeland Security.
Federal spending under PSC 1660 by year
| Fiscal year | Contract obligations |
|---|---|
| FY2024 | $157.5 million |
| FY2025 | $225.4 million |
| FY2026 | $170.2 million |
| FY2027 (so far) | $0 |
Who wins PSC 1660 contracts
| Company | Obligated, last 3 years |
|---|---|
| Eci Defense Group, Inc. | $50.9 million |
| Hamilton Sundstrand Corporation | $44 million |
| Avox Systems Inc | $41.2 million |
| Honeywell International Inc. | $39.4 million |
| Aero International, LLC | $24.3 million |
| Gentex Corp | $24.1 million |
| The Boeing Company | $21.4 million |
| The Boeing Company | $17 million |
| Essex Industries, Inc. | $14.5 million |
| Atlantic Diving Supply, Inc. | $13.9 million |
Related PSC codes
- 1610 Aircraft Propellers and Components
- 1615 Helicopter Rotor Blades, Drive Mechanisms and Components
- 1620 Aircraft Landing Gear Components
- 1630 Aircraft Wheel and Brake Systems
- 1640 Aircraft Control Cable Products
- 1650 Aircraft Hydraulic, Vacuum, and De – Icing System Components
- 1670 Parachutes; Aerial Pick Up, Delivery, Recovery Systems; and Cargo Tie Down Equipment
- 1675 Space Vehicle Components
- 1677 Space Vehicle Remote Control Systems
- 1680 Miscellaneous Aircraft Accessories and Components
Frequently asked questions
What is PSC 1660?
1660 is the product code in the federal Product and Service Code (PSC) Manual for aircraft air conditioning, heating, and pressurizing equipment, under 16 (Aerospace Craft Components and Accessories). Agencies put a PSC on every contract to record what they bought.
What is the difference between a PSC and a NAICS code?
A PSC describes what the government is buying. A NAICS code describes the industry of the business doing the work, and it sets the SBA size standard for small business set-asides. Every contract notice has both.
Which NAICS code goes with PSC 1660?
Most federal contract dollars under PSC 1660 go with NAICS 336413 (Other Aircraft Parts and Auxiliary Equipment Manufacturing), according to USAspending.gov. The contracting officer picks the NAICS code for each solicitation, so check the notice.
How do I find contracts that use PSC 1660?
Contract opportunities are posted on SAM.gov with their PSC and NAICS codes. 42 open notices use PSC 1660 right now. FedReady can match new ones to your business and email you, free.