Which method is NOT a part of FAR Part 17's description of special contracting?

The method that is NOT a part of FAR Part 17's description of special contracting is contingency contracting. FAR Part 17 focuses on specific contracting methods that aim to enhance the efficiency and effectiveness of government procurement. These methods include multi-year contracting, which allows for the procurement of supplies or services for more than one year, and options, which provide the government with the flexibility to extend a contract under specified conditions.

Contingency contracting, while an important aspect of procurement strategy particularly in military and emergency situations, is not categorized under the special contracting methods defined in FAR Part 17. Instead, it relates to contracts established to support operations during the onset of contingencies and emergencies but does not fit within the framework of the specific contracting methods laid out in Part 17.

Leader company contracting does not fall under the traditional definitions found in FAR Part 17 either but may refer to other collaborative or joint venture contracting approaches that exist outside of the specific terminology used in FAR for special contracting methods.