MELBOURNE, Australia — Taiwan has declared its Boeing AH-64E Apache Guardian attack helicopters fully operational, according to its National Defense Ministry.

In a July 17 ceremony held at the Tawianese Army base at Longtan in northern Taiwan, the 601st Aviation Brigade was declared fully operational as its second Apache Guardian squadron was commissioned into service.

The commissioning of Taiwan’s fleet of 29 Apache Guardians is a big leap in capability for the island, which has up to now been operating the remaining survivors of 63 Bell AH-1W Super Cobra attack helicopters delivered in the 1990s.

The ceremony was attended by Taiwanese President Tsai Ing-wen, who said in her speech that the brigade has a vital role in the Taiwanese military’s efforts to defend Taiwan and deter the enemy.

The 601st Aviation Brigade is made up of two squadrons that operate Taiwan’s 29 Apache Guardians, with the first squadron achieving full operational capability in July 2017.

It was revealed in 2011 that Taiwan had signed a contract, reported to be worth up to $1.91 billion, for 30 Apache Guardians following notification to Congress by the U.S. Defense Security Cooperation Agency of the sale in October 2008. Deliveries started in 2012, and crew training in the United States began later that same year.

The first six helicopters were ferried by sea to Taiwan in November 2013, and the remaining Apache Guardians were delivered in batches. The last helicopters were received in October 2014, although by this time one had been written off when it crashed into a residential building in Taoyuan County, northern Taiwan, in April that year.

Rescue workers lift a damaged American-made AH-64E attack helicopter from a roof in Taoyuan, northern Taiwan, on April 25, 2014. (Sam Yeh/AFP via Getty Images)
Rescue workers lift a damaged American-made AH-64E attack helicopter from a roof in Taoyuan, northern Taiwan, on April 25, 2014. (Sam Yeh/AFP via Getty Images)

The Taiwanese Apache Guardians are equipped with the AN/APG-78 Longbow millimeter-wave radar, which is capable of day, night and all-weather operations and can fire the Lockheed Martin AGM-114L/M Hellfire missiles that have been acquired by Taiwan.

Taiwan has been under increasingly severe diplomatic pressure from neighboring China, which views the self-governing island as a rogue province and has not ruled out the use of force to retake it. It has also used its diplomatic and economic clout to restrict foreign arms sales to Taiwan, although the U.S. is bound by the Taiwan Relations Act to “make available to Taiwan such defense articles and defense services in such quantity as may be necessary to enable Taiwan to maintain a sufficient self-defense capability.”