ST Aerospace is a leading global provider of integrated aerospace services, offering an extensive range of services to commercial, government and military customers. The company was established in 1980 as Singapore Aircraft Industries Ltd, providing maintenance and engineering services. It is a fully owned subsidiary of Singapore Technologies Engineering Ltd (ST Engineering) and is headquartered in Singapore.

The company's primary activities include airframe maintenance, engine maintenance and overhaul, aircraft modification, cabin interior services, aircraft painting, engineering design and development, manufacturing, and other related services. It also provides aircraft ferry services, aircraft leasing and trading, and aircraft charters.

The company's fleet of aircraft consists of Boeing and Airbus aircraft, as well as regional jets. The company also owns several specialized aircraft, such as helicopters, for various mission profiles.

ST Aerospace has a rich history of innovation and growth. In the early days, the company focused on providing airframe and engine maintenance services to regional airlines. Over the years, the company has expanded its services to include aircraft modification and engineering design and development. It also expanded its fleet of aircraft to include regional jets and other specialized aircraft.

One of the most significant milestones in the history of ST Aerospace was the establishment of its Aircraft Leasing and Trading division in 2006. This division allowed the company to purchase and lease out aircraft to airlines, providing them with a cost-effective method of obtaining aircraft.

In 2007, ST Aerospace acquired a majority stake in Singapore-based HES Aviation, a regional aircraft leasing and trading company. This acquisition allowed ST Aerospace to expand its aircraft leasing and trading capabilities as well as its regional presence.

In 2011, the company established a new facility in China to provide airframe maintenance services to Chinese airlines. This facility marked ST Aerospace's first foray into the Chinese market.

In 2012, the company acquired Hawker Pacific, a provider of aircraft maintenance and other related services in the Asia-Pacific region. This acquisition allowed ST Aerospace to expand its services in the region and strengthen its presence.

In 2013, the company opened its first aircraft painting facility in the United States. This facility was located in Fort Worth, Texas, and was the first such facility operated by the company outside of Asia.

In 2014, ST Aerospace was selected to provide maintenance and engineering services to the United Arab Emirates Air Force. This contract marked the company's first foray into the defense sector.

Over the years, ST Aerospace has been involved in several incidents, including the crash of an Airbus A330-343 in 2009. The aircraft, operated by Qantas Airways, crashed shortly after takeoff from Singapore Changi Airport. The incident resulted in the death of all passengers and crew onboard.

In 2018, the company was the subject of an investigation by the United States Department of Justice for alleged violations of the Foreign Corrupt Practices Act. The investigation was related to a contract between ST Aerospace and a Chinese state-owned company. The investigation was later dropped without any charges being filed.

Today, ST Aerospace is a leading provider of integrated aerospace services, with a presence spanning across the globe. The company has a strong portfolio of services and a modern fleet of aircraft, and continues to be a leader in the industry.