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Federal contract solicitations taking responses now, soonest deadline first. Each links to the notice on SAM.gov and to a brief: the contract it likely follows, the incumbent and who else wins that work. Where do few companies bid? →

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91 open notices due within 30 days · 28 due this week · 27 posted in the last 7 days · 334511 → 334511 SEARCH, DETECTION, NAVIGATION, GUIDANCE, AERONAUTICAL, AND NAUTICAL SYSTEM AND INSTRUMENT MANUFACTURING

Due	Notice	Buyer	Set-aside	Industry / product	Place	Posted
Oct 5 1:00 PM ET 2 days	RFI MAST O&S Sources Sought · 20261005 · Brief	Department of Homeland Security US Customs and Border Protection · AIR AND MARINE CONTRACTING DIVISION	None	334511 search, detection, navigation, guidance, aeronautical, and nautical system and instrument manufacturing Z1BC maintenance of radar and navigational facilities	Washington DC	Oct 1
Oct 5 2 days	65--CONCENTRATOR,OXYGEN Combined Synopsis/Solicitation · SPE2DS26T475V · Brief	Department of Defense Defense Logistics Agency · DLA TROOP SUPPORT	WOSB	334511 search, detection, navigation, guidance, aeronautical, and nautical system and instrument manufacturing 65	—	Sep 27
Oct 5 2 days	58--CAP,LENS Combined Synopsis/Solicitation · SPE7L326T273G · Brief	Department of Defense Defense Logistics Agency · DLA LAND AND MARITIME	—	334511 search, detection, navigation, guidance, aeronautical, and nautical system and instrument manufacturing 58	—	Sep 22
Oct 5 2 days	66--BELT,WEATHER KIT Combined Synopsis/Solicitation · SPE8E526Q0444 · Brief	Department of Defense Defense Logistics Agency · DLA TROOP SUPPORT	—	334511 search, detection, navigation, guidance, aeronautical, and nautical system and instrument manufacturing 66	—	Sep 21
Oct 5 8:00 AM ET 2 days	FY27-29 Long Endurance Electronic Decoy (LEED) Production Presolicitation · N0002427R5533 · Brief	Department of Defense Dept of the Navy · NAVSEA HQ	None	334511 search, detection, navigation, guidance, aeronautical, and nautical system and instrument manufacturing 5865 electronic countermeasures, counter-countermeasures and quick reaction capability equipment	Grand Prairie TX	Sep 17
Oct 5 4:30 PM ET 2 days	RADAR ABSORBER Solicitation · N0038326QTC83 · Brief Few bidders likely	Department of Defense Dept of the Navy · NAVSUP WEAPON SYSTEMS SUPPORT	—	334511 search, detection, navigation, guidance, aeronautical, and nautical system and instrument manufacturing 5841 radar equipment, airborne	—	Sep 4
Oct 5 4:30 PM ET 2 days	TRANSMITTER,INDUCTI Solicitation · N0038326QSC19 · Brief Few bidders likely	Department of Defense Dept of the Navy · NAVSUP WEAPON SYSTEMS SUPPORT	—	334511 search, detection, navigation, guidance, aeronautical, and nautical system and instrument manufacturing 6605 navigational instruments	—	Sep 3
Oct 5 12:00 PM MT 2 days	PIGA Float Assembly Repair Program Solicitation · FA821426RB002 · Brief Few bidders likely	Department of Defense Dept of the Air Force · FA8214 AFNWC PZBB	—	334511 search, detection, navigation, guidance, aeronautical, and nautical system and instrument manufacturing J014 maint/repair/rebuild of equipment- guided missiles	—	Aug 11
Oct 6 3 days	12--ACTUATOR,ELECTRO-MECHA Combined Synopsis/Solicitation · SPE4A726T799P · Brief Few bidders likely	Department of Defense Defense Logistics Agency · DLA AVIATION	—	334511 search, detection, navigation, guidance, aeronautical, and nautical system and instrument manufacturing 12	—	Sep 28
Oct 6 3 days	66--SENSOR,CO Combined Synopsis/Solicitation · SPE7M126U6761 · Brief	Department of Defense Defense Logistics Agency · DLA LAND AND MARITIME	WOSB	334511 search, detection, navigation, guidance, aeronautical, and nautical system and instrument manufacturing 66	—	Sep 21
Oct 6 3 days	66--SENSOR,NITROGEN Combined Synopsis/Solicitation · SPE7M126U6780 · Brief	Department of Defense Defense Logistics Agency · DLA LAND AND MARITIME	WOSB	334511 search, detection, navigation, guidance, aeronautical, and nautical system and instrument manufacturing 66	—	Sep 21
Oct 6 3 days	66--DETECTOR,HYDROGEN SULF Combined Synopsis/Solicitation · SPE7M126U6804 · Brief	Department of Defense Defense Logistics Agency · DLA LAND AND MARITIME	Small business	334511 search, detection, navigation, guidance, aeronautical, and nautical system and instrument manufacturing 66	—	Sep 21
Oct 6 3 days	66--INDICATOR,FAULT LOCATI Combined Synopsis/Solicitation · SPE7M126U6863 · Brief	Department of Defense Defense Logistics Agency · DLA LAND AND MARITIME	WOSB	334511 search, detection, navigation, guidance, aeronautical, and nautical system and instrument manufacturing 66	—	Sep 21
Oct 6 3 days	61--MOTOR,FLAG AND BRACKET Combined Synopsis/Solicitation · SPE7M126U6199 · Brief	Department of Defense Defense Logistics Agency · DLA LAND AND MARITIME	Small business	334511 search, detection, navigation, guidance, aeronautical, and nautical system and instrument manufacturing 61	—	Sep 21
Oct 6 3 days	66--DETECTOR CAPSULES,CHEM Combined Synopsis/Solicitation · SPE7M126U6812 · Brief	Department of Defense Defense Logistics Agency · DLA LAND AND MARITIME	WOSB	334511 search, detection, navigation, guidance, aeronautical, and nautical system and instrument manufacturing 66	—	Sep 21
Oct 6 3 days	66--PROBE,SAMPLING,GAS IND Combined Synopsis/Solicitation · SPE7M126U6502 · Brief	Department of Defense Defense Logistics Agency · DLA LAND AND MARITIME	—	334511 search, detection, navigation, guidance, aeronautical, and nautical system and instrument manufacturing 66	—	Sep 21
Oct 7 4 days	65--LARYNGOSCOPE SET Combined Synopsis/Solicitation · SPE2DS27T0166 · Brief	Department of Defense Defense Logistics Agency · DLA TROOP SUPPORT	Small business	334511 search, detection, navigation, guidance, aeronautical, and nautical system and instrument manufacturing 65	—	Oct 1
Oct 7 4 days	12--LEVEL,FIRE CONTROL INS Combined Synopsis/Solicitation · SPE7M126U6882 · Brief	Department of Defense Defense Logistics Agency · DLA LAND AND MARITIME	Small business	334511 search, detection, navigation, guidance, aeronautical, and nautical system and instrument manufacturing 12	—	Sep 22
Oct 8 5 days	66--CELL ASSEMBLY,CARBO Combined Synopsis/Solicitation · SPE7M126T384R · Brief	Department of Defense Defense Logistics Agency · DLA LAND AND MARITIME	—	334511 search, detection, navigation, guidance, aeronautical, and nautical system and instrument manufacturing 66	—	Sep 27
Oct 8 3:30 PM MT 5 days	58--OLES LONG RANGE MWIR THERMAL BINOCULARS Special Notice · DOILFBO260037 · Brief Likely single bid	Department of the Interior Bureau of Land Management · NATIONAL OPERATIONS CENTER	—	334511 search, detection, navigation, guidance, aeronautical, and nautical system and instrument manufacturing 5855 night vision equipment, emitted and reflected radiation	—	Sep 23
Oct 8 5:00 PM ET 5 days	Sources Sought/RFI - AFLCMC/ESAN FMS Brazil Radar Modernization Sources Sought · A068794 · Brief Last contract $60.8M	Department of Defense Dept of the Air Force · FA2330 ARSPC MGNT SYSTMS AFLCMC/HBA	—	334511 search, detection, navigation, guidance, aeronautical, and nautical system and instrument manufacturing 5840 radar equipment, except airborne	Hanscom AFB MA	Sep 3
Oct 8 4:30 PM ET 5 days	HYDROPHONE MOUNT Solicitation · SPRMM126QKG98 · Brief Last contract $8.36MFew bidders likelyLPTA	Department of Defense Defense Logistics Agency · SPRMM1 DLA MECHANICSBURG	—	334511 search, detection, navigation, guidance, aeronautical, and nautical system and instrument manufacturing 5865 electronic countermeasures, counter-countermeasures and quick reaction capability equipment	—	Aug 27
Oct 9 6 days	66--INDICATOR,POSITION Combined Synopsis/Solicitation · SPE4A527T0062 · Brief Few bidders likely	Department of Defense Defense Logistics Agency · DLA AVIATION	—	334511 search, detection, navigation, guidance, aeronautical, and nautical system and instrument manufacturing 66	—	Oct 1
Oct 9 11:00 AM CT 6 days	COMM2 VHF-4000E Procurement & Repair Sources Sought · FA8105-26-R-C0002 · Brief	Department of Defense Dept of the Air Force · FA8105 AFLCMC WKK	None	334511 search, detection, navigation, guidance, aeronautical, and nautical system and instrument manufacturing	Tinker AFB OK	Sep 22
Oct 9 11:00 AM ET 6 days	Large Area Display System (LADS) Sources Sought · H9224126S61892 · Brief Last contract $5.84MFew bidders likely	Department of Defense US Special Operations Command (Ussocom) · AMSAM-SPK	—	334511 search, detection, navigation, guidance, aeronautical, and nautical system and instrument manufacturing 1680 miscellaneous aircraft accessories and components	Fort Eustis VA	Sep 9
Oct 9 4:30 PM ET 6 days	66--DIGITAL MAP UNIT, IN REPAIR/MODIFICATION OF Solicitation · N0038326QBA69 · Brief Few bidders likely	Department of Defense Dept of the Navy · NAVSUP WEAPON SYSTEMS SUPPORT	—	334511 search, detection, navigation, guidance, aeronautical, and nautical system and instrument manufacturing 6605 navigational instruments	—	Sep 9
Oct 9 4:30 PM ET 6 days	INDICATOR,COURSE Solicitation · SPRMM126QMJ06 · Brief Last contract $451.3KFew bidders likelyLPTA	Department of Defense Defense Logistics Agency · SPRMM1 DLA MECHANICSBURG	—	334511 search, detection, navigation, guidance, aeronautical, and nautical system and instrument manufacturing 6605 navigational instruments	—	Sep 9
Oct 10 11:55 PM UTC+12:00 7 days	HANDHELD THREAT DETECTOR Combined Synopsis/Solicitation · W911S227U0011 · Brief	Department of Defense Dept of the Army · W6QM MICC-FT DRUM	Small business	334511 search, detection, navigation, guidance, aeronautical, and nautical system and instrument manufacturing 6630 chemical analysis instruments	—	Oct 2
Oct 13 10 days	66--DETECTOR,GAS Combined Synopsis/Solicitation · SPE7M927T0002 · Brief	Department of Defense Defense Logistics Agency · DLA LAND AND MARITIME	Small business	334511 search, detection, navigation, guidance, aeronautical, and nautical system and instrument manufacturing 66	—	Oct 1
Oct 13 3:00 PM ET 10 days	NSN: 6685-00-861-0628, VALVE-HOLDER ASSY, WSDC: HELICOPTER, UH-60A, UH-60L, UH-60V 40A Presolicitation · SPE4A526R0287 · Brief	Department of Defense Defense Logistics Agency · DLA AVIATION	None	334511 search, detection, navigation, guidance, aeronautical, and nautical system and instrument manufacturing 6685 pressure, temperature, and humidity measuring and controlling instruments	Richmond VA	Sep 28
Oct 13 4:00 PM ET 10 days	LPD - Ship Control System (SCS) Modernization Presolicitation Notice Presolicitation · N00024-26-R-4444 · Brief	Department of Defense Dept of the Navy · NAVSEA HQ	Small business	334511 search, detection, navigation, guidance, aeronautical, and nautical system and instrument manufacturing 2090 miscellaneous ship and marine equipment	—	Sep 28
Oct 13 4:30 PM ET 10 days	HOUSING ASSEMBLY,SE Solicitation · SPRPA126QRC50 · Brief	Department of Defense Defense Logistics Agency · DLA AVIATION AT PHILADELPHIA, PA	—	334511 search, detection, navigation, guidance, aeronautical, and nautical system and instrument manufacturing 6615 automatic pilot mechanisms and airborne gyro components	—	Sep 25
Oct 13 4:00 PM ET 10 days	Presolicitation synopsis for the repair of QTY 1 NSN 7R 5841 016561177 KB for FMS Kuwait Presolicitation · N00383-26-Q-D103 · Brief Likely single bid	Department of Defense Dept of the Navy · NAVSUP WEAPON SYSTEMS SUPPORT	None	334511 search, detection, navigation, guidance, aeronautical, and nautical system and instrument manufacturing 5841 radar equipment, airborne	Philadelphia PA	Sep 22
Oct 13 4:30 PM ET 10 days	58--PROCESSOR,RADAR DAT, IN REPAIR/MODIFICATION OF Solicitation · N0038326QBA99 · Brief Few bidders likelyLPTA	Department of Defense Dept of the Navy · NAVSUP WEAPON SYSTEMS SUPPORT	—	334511 search, detection, navigation, guidance, aeronautical, and nautical system and instrument manufacturing 5841 radar equipment, airborne	—	Sep 14
Oct 13 4:30 PM ET 10 days	66--RODMETER,UNDERWATER, IN REPAIR/MODIFICATION OF Solicitation · N0010426QYAHX · Brief Few bidders likely	Department of Defense Dept of the Navy · NAVSUP WEAPON SYSTEMS SUPPORT MECH	—	334511 search, detection, navigation, guidance, aeronautical, and nautical system and instrument manufacturing 6605 navigational instruments	—	Sep 11
Oct 13 4:30 PM ET 10 days	13--AIR FLASK,TORPEDO Solicitation · N0010423QUC40 · Brief Few bidders likely	Department of Defense Dept of the Navy · NAVSUP WEAPON SYSTEMS SUPPORT MECH	—	334511 search, detection, navigation, guidance, aeronautical, and nautical system and instrument manufacturing 1355 torpedos and components, inert	—	Sep 11
Oct 13 4:30 PM ET 10 days	AIR DATA MODULE Solicitation · SPRPA126QRC44 · Brief	Department of Defense Defense Logistics Agency · DLA AVIATION AT PHILADELPHIA, PA	—	334511 search, detection, navigation, guidance, aeronautical, and nautical system and instrument manufacturing 6605 navigational instruments	—	Sep 10
Oct 13 4:30 PM ET 10 days	TRANSMITTER,INDUCTI Solicitation · N0038326QSC21 · Brief Few bidders likely	Department of Defense Dept of the Navy · NAVSUP WEAPON SYSTEMS SUPPORT	—	334511 search, detection, navigation, guidance, aeronautical, and nautical system and instrument manufacturing 6605 navigational instruments	—	Sep 10
Oct 13 4:30 PM ET 10 days	SHELL,AFTERBODY FW Solicitation · SPRMM126QKH71 · Brief Few bidders likelyLPTA	Department of Defense Defense Logistics Agency · SPRMM1 DLA MECHANICSBURG	—	334511 search, detection, navigation, guidance, aeronautical, and nautical system and instrument manufacturing 1355 torpedos and components, inert	—	Sep 2
Oct 13 4:30 PM ET 10 days	PROCESSOR,FLIGHT IN Solicitation · N0038326QAA62 · Brief Few bidders likely	Department of Defense Dept of the Navy · NAVSUP WEAPON SYSTEMS SUPPORT	—	334511 search, detection, navigation, guidance, aeronautical, and nautical system and instrument manufacturing 6610 flight instruments	—	Aug 14
Oct 14 5:00 PM ET 11 days	Enterprise Air Route Surveillance Radar Replacement Sources Sought Request of Information Sources Sought · FA2330-RFI-ARSR-R · Brief	Department of Defense Dept of the Air Force · FA2330 ARSPC MGNT SYSTMS AFLCMC/HBA	—	334511 search, detection, navigation, guidance, aeronautical, and nautical system and instrument manufacturing	Hanscom AFB MA	Sep 24
Oct 14 5:00 PM ET 11 days	USAF F-16 Next-Generation Mission Compute (NGMC) Industry Day Special Notice · FA8615-26-INDUSTRYDAY-F16NGMC · Brief Clearance required	Department of Defense Dept of the Air Force · FA8615 AFLCMC WAMK F16	—	334511 search, detection, navigation, guidance, aeronautical, and nautical system and instrument manufacturing 1680 miscellaneous aircraft accessories and components	—	Sep 24
Oct 14 1:00 PM ET 11 days	Platform-Agnostic, Modular Open-Architecture Health and Usage Monitoring System (HUMS) Sources Sought · W911W6RFIHUMSrev1 · Brief Few bidders likely	Department of Defense Dept of the Army · W6QK AATD CONTR OFF	—	334511 search, detection, navigation, guidance, aeronautical, and nautical system and instrument manufacturing 6610 flight instruments	Fort Eustis VA	Sep 22
Oct 14 5:00 PM ET 11 days	B-52 Solid-State Crystal Controlled Oscillator/Isolator Assembly Sources Sought · FA853926I-APQ166OSC · Brief Few bidders likely	Department of Defense Dept of the Air Force · FA8539 AFSC PZABA	—	334511 search, detection, navigation, guidance, aeronautical, and nautical system and instrument manufacturing	—	Sep 14
Oct 14 5:00 PM ET 11 days	B-52 Azimuth Circuit Card Assembly (CCA) Sources Sought · FA853926I-APQ166AZI · Brief Few bidders likely	Department of Defense Dept of the Air Force · FA8539 AFSC PZABA	—	334511 search, detection, navigation, guidance, aeronautical, and nautical system and instrument manufacturing	—	Sep 14
Oct 14 5:00 PM ET 11 days	B-52 Radar Pressurization Unit (RPU) Sources Sought · FA853926I-APQ166RPU · Brief Few bidders likely	Department of Defense Dept of the Air Force · FA8539 AFSC PZABA	—	334511 search, detection, navigation, guidance, aeronautical, and nautical system and instrument manufacturing	—	Sep 14
Oct 15 12:00 PM CT 12 days	CURTISS-WRIGHT TRANSPONDER Combined Synopsis/Solicitation · N0017827Q6600 · Brief Likely single bidLPTA	Department of Defense Dept of the Navy · NSWC DAHLGREN	—	334511 search, detection, navigation, guidance, aeronautical, and nautical system and instrument manufacturing 6625 electrical and electronic properties measuring and testing instruments	—	Oct 1
Oct 15 11:00 AM ET 12 days	CONCENTRATOR TEST SET Type: TTU-518/E Presolicitation · N6833526Q1228 · Brief Likely single bid	Department of Defense Dept of the Navy · NAVAIR WARFARE CTR AIRCRAFT DIV	None	334511 search, detection, navigation, guidance, aeronautical, and nautical system and instrument manufacturing 4920 aircraft maintenance and repair shop specialized equipment	—	Sep 30
Oct 15 2:00 PM ET 12 days	Support, modification, and upgrade of an existing integration of L3 Harris FlightScene 2.0 embedded in a military rotary wing avionics architecture Presolicitation · H9224126RE008 · Brief Likely single bid	Department of Defense US Special Operations Command (Ussocom) · AMSAM-SPK	None	334511 search, detection, navigation, guidance, aeronautical, and nautical system and instrument manufacturing DA01 it and telecom - business application/application development support services (labor)	Fort Eustis VA	Sep 30
Oct 15 4:30 PM ET 12 days	58--RECEIVER,COORDINATE, IN REPAIR/MODIFICATION OF Solicitation · N0038326QNB14 · Brief Few bidders likely	Department of Defense Dept of the Navy · NAVSUP WEAPON SYSTEMS SUPPORT	—	334511 search, detection, navigation, guidance, aeronautical, and nautical system and instrument manufacturing 5841 radar equipment, airborne	—	Sep 15

How this list is made

SAM.gov contract notices still taking responses: the response deadline is today or later and falls in the window. Notices without a deadline (many special notices) aren't listed. Deadlines change with amendments: check the notice on SAM.gov before you plan around one.
From the public SAM.gov extract, loaded daily; notices posted after the latest load aren't here yet.

Newest notice in the data: 2026-10-02. Data as of 2026-09-30.