41 C.F.R. § 302-4.1 What is a permanent change of station (PCS)?
Title 41 - Public Contracts and Property Management
A permanent change of station (PCS) is an assignment of a new appointee to an official station or the transfer of an employee from one official station to another on a permanent basis.
Title 41: Public Contracts and Property Management
PART 302–4—ALLOWANCES FOR SUBSISTENCE AND TRANSPORTATION
Subpart A—Eligibility
§ 302-4.1 What is a permanent change of station (PCS)?

