Sea King MK-45/45A helicopters were acquired from UK on 28 September 1974 and 111 ASV/ASW Squadron was established. PN Sea Kings are fitted with Exocet AM-39 Anti Ship missile in ASV role and MK-46 torpedoes and Depth Charges in ASW role. The primary roles assigned are ASW and ASV along with infinite secondary roles such as SAR, MEDEVAC, HVBSS, Para Drop, VVIP/Passenger Ferry, MEDEVAC etc. Since its inception, 111 Squadron has been a linchpin of the PN operations. Be it a multi-national exercise e.g AMAN, KAKADU or mass relief operation such as earthquake of 2005, Flood Relief Operations in Punjab and Sindh in 2010 and Flood Relief Operations in Sindh in 2011, 111 squadron has always been at the forefront. This squadron has the unique capability to undertake Night Search and Rescue over sea. The squadron is routinely tasked at short notices to undertake challenging and risk prone helicopter operations. At present squadron has 06 Westland Sea King Helicopters. Avionics suite of PN Sea Kings is being upgraded to enhance its sensors capabilities.