* MCA Engineers Inc. of Oxnard won a $34.4-million contract from Vandenburg Air Force Base for property maintenance and repair.
* Whittaker Corp. of North Hollywood won a $341,700 contract from the Defense Supply Center in Columbus, Ohio, for aircraft components and accessories.
* Fiberset Inc. of Mojave won a $303,763 contract from NASA in Houston for vehicular equipment components.
* Senior Flexonics Inc. of Burbank won a $195,248 contract from the Defense General Supply Center in Richmond, Va., for aircraft and airframe structural components.
* Courtaulds Defense Products Inc. of Burbank won a $174,640 contract from the Navy in Mechanicsburg, Pa., for sealers.
* Instrumentation Marketing Corp. of Burbank won a $165,438 contract from the Navy in Patuxent River, Md., for photographic equipment.
* ASC-Los Angeles Courtaulds Aerospace of Glendale won a $106,150 contract from the General Services Administration in Auburn for sealers.