Pakistan Telecommunication Authority 
Planar Turbulence Amplifier 
Potential Toxic Area 
Passenger Transport Authority 
Post Turbine Augmentation 
Post-Test Analysis 
Procurement Technical Assistance 
Programmable Tracking Antenna 
Propellant Tank Assembly 
Prototype Test Article 
Partnership for Technology Access 
Pennsylvania Telephone Association 
Personal Travel Assistent 
Pitch Trim Actuator 
Pohakuloa Training Area 
Post and Telecom Administration 
Posts and Telecommunications Administr… 
Premium Transportation Authorization 
Previous Transfer Address 
Priority Target Accept 
Probe Transmitting Antenna 
Product Test Acceptance 
Product Test Accepted 
Programmable Time Accumulator 
PROPELLANT TANK ASSEMBLIES 
Provincial Telecommunications Administ…