* Aegir Systems in Oxnard has been...

* Aegir Systems in Oxnard has been awarded a four-year contract for $1.9 million from the Federal Transit Administration to help transit agencies improve the personal security of their patrons and employees. The contract calls for Aegir to evaluate the security plans of public and private transit systems and develop a security audit manual. The contract went into effect March 1.

* Litton Systems Inc. of Woodland Hills won two contracts totaling $1.3 million from the Navy in Philadelphia for circuit-card assemblies, as well as a separate 385,275 contract for circuit-card assemblies and one for $359,706 for radio receivers. Litton also won a $218,321 contract from Tinker Air Force Base in Oklahoma for electrical and electronic equipment components, and a $89,064 contract from Kelly Air Force Base in Texas for flight command indicators.

* Castle Precision Industries of Sylmar won a $555,542 contract from the Defense Industrial Supply Center in Philadelphia for hollow pins.

* Kavlico Corp. of Moorpark won a $411,720 contract from the Naval Inventory Control Point in Philadelphia for motional transducers.

* Hydraulics International Inc. of Chatsworth won a $328,686 contract from the Johnson Space Center in Houston for aircraft starting carts.

* Aerospace Service & Controls Inc. of Sun Valley won a $263,766 contract from the Johnson Space Center in Houston for the use of an autoclave.

* Cadillac Gage Textron Inc. of Valencia won a $234,688 contract from the Army Armament and Chemical Acquisition and Logistics Activity in Rock Island, Ill., for circuit-card assemblies.

* Senior Flexonics Inc. of Burbank won a $164,840 contract from the Defense General Supply Center in Richmond, Va., for bleed air duct assemblies.

* Briles Wing & Helicopter Inc. of Van Nuys won a $118,800 contract from the Nez Perce National Forest in Grangeville, Idaho, for exclusive use of helicopter services.

* Crane Co. of Burbank won a $105,700 contract from Tinker Air Force Base in Oklahoma for 302 hydraulic spares applicable to F-15 aircraft.

* Flamemaster Corp. of Sun Valley won a $104,683 contract from the General Services Administration in Auburn, Wash., for sealing compound.

* Puroflow Corp. of Van Nuys won a $73,696 contract from Kelly Air Force Base in Texas for filter assemblies.

* Teleflex Control Systems of Oxnard won a $66,002 contract from Kelly Air Force Base for cartridge assemblies.