DEF STAN 05-123 (PART 5/ISSUE 2), DEFENCE STANDARD: TECHNICAL PROCEDURES FOR THE PROCUREMENT OF AIRCRAFT, WEAPONS AND ELECTRONIC SYSTEMS - PART 5-PRODUCTION PROCEDURES (30 OCT 2007)., Technical Procedures for the Procurement of Aircraft, Weapons and Electronic Systems - Part 5 Production Procedures. This part of the standard deals with procedures that are primarily applicable during the Manufacture and In service phases of the procurement cycle. The part also deals with loans of Government owned equipment,known as Government Furnished Assets (GFA), and aircraft.