south of Danang escorted for the first time by U.S. Army UH-1B gunships from the 68th Aviation Company. In spite of the additional support three UH-34s were shot down during the operation. All three aircraft were eventually recovered.On 27 April the squadron supported Operation Bach Phuong XI, an ARVN attack on the Vietcong (VC) stronghold at Đỗ Xá (), one helicopter was hit in the initial landings and had to be destroyed. From late April the squadron supported a 90-day operation by the ARVN 1st Division along the Laos border. On 8 June the squadron was replaced by HMM-261, during its deployment it had flown 17,670 sorties for a total of 8,579 flight hours, losing one Marine killed and three UH-34Ds destroyed. In mid-June 1964 the squadron came ashore from USS Valley Forge to replace HMM-364 as the Shufly squadron at Da Nang Air Base, with the formal handover on 19 June. The squadron supported the U.S. and South Vietnamese forces engaged in the Battle of Nam Dong from 5–6 July. On 18 July the squadron evacuated the Marine team on Tiger Tooth Mountain (Dong Voi Mẹp) () to Khe Sanh. At the same time a four helicopter detachment was sent to Udorn to assist with search and rescue operations. On 30 August a squadron UH-34D hit trees on a small high elevation landing zone and crash-landed the crew was rescued and the helicopter stripped and destroyed. On 4 September the squadron supported Operation Chinh Bien an ARVN 2nd Division assault in Quảng Nam Province. On 21 September the squadron flew to Nha Trang to escape Typhoon Tilda, returning on 23 September. On 8 October the squadron was relieved in place by the men of HMM-365, during this deployment the squadron had conducted approximately 6,600 sorties for a total of slightly over 4,400 flight hours, losing two UH-34Ds. On 17 November, the squadron which now formed the helicopter unit of the Special Landing Force (SLF) on USS Princeton'' joined recovery efforts in the aftermath of Typhoon Kate. During six days the squadron flew over 600 hours and completed 1,020 sorties. On 21 November one of its helicopters crashed at sea with two Marines killed. On 4 March 1965 the squadron returned to Okinawa from SLF duty. On 9 March the squadron's personnel were flown into Da Nang Air Base where they took over the helicopters of HMM-365. The squadron became