omputer units; part numbers 4066010-901, -902. and -903; as installed on. but not hatted to, the following almlancs. certificated in any category: Airbus Industrie Model A300-4300. A310-200. A310-300. A320-200. and A340 'scales airplanes: Boeing Model .727-100 and -200: 737-100. -200. -300. -400. and -500: 747-100.