Pakistani naval officials confirmed today that they have added one Lockheed P-3 Orion long-range surveillance aircraft to their aviation fleet.
The aircraft was supplied to the Pakistan Navy by the US, under the Security Assistance Programme (SAP) program of the U.S. Department of Defence. A function was held at the port city of Karachi, to mark the occasion. Senior naval officials attended the function, including Admiral Muhammad Asif Sandila, the Chief of Naval Staff (CNS) for the Pakistan Navy.
Pakistan had signed an agreement with the American defence manufacturer Lockheed Martin six years ago, for the delivery of 7 Orion aircrafts. The Navy received three of the aircrafts in 2010, while another two were delivered in 2011. In addition to the Orions, the Navy is also operating 7 ageing Fokker F27-200 Friendship naval surveillance aircrafts, which it had acquired during the 1980s.
Source:Pakistan Navy inducts American-made Orion marine surveillance aircraft in to its aviation fleet | Pakistan Defence
So where are those 3 P-3Cs AEW&Cs which were included in the deal. If not wrong then there might some in the US being fitted with the Hawk Eye systems.