OGMA
OGMA – Indústria Aeronáutica de Portugal S.A. is a Portuguese aerospace company focused on aircraft maintenance and manufacturing. History 
OGMA was founded as part of the reorganisation of the Portuguese Army's Aeronautic Service on June 29, 1918, under the name Parque de Material Aeronáutico (Aeronautics Material Depot), and was responsible for storing, repairing, manufacturing, and providing aeronautical material. In addition, OGMA provided training to military aeronautics personnel. Ten years later it was renamed Oficinas Gerais de Material Aeronáutico (General Workshops of Aeronautical Material). In 1994, the company was renamed OGMA - Indústria Aeronáutica de Portugal S.A.

OGMA began manufacturing the Caudron G-3 aircraft in 1922. This was followed by the manufacture, under English licence, of the Vickers Valparaiso in 1933, the Avro 626 and de Havilland Tiger Moth aircraft in 1938, and the construction of 66 DHC-1 Chipmunks in 1952. Three years later, OGMA signed its first contract with the United States Navy. In 1959, it signed a contract with the US Air Force. In 1972, OGMA signed a manufacturing contract with Eurocopter Group. Throughout the 1970s, the company performed maintenance on C-130 Hercules, P-3 Orion and SA 300 Puma aircraft. In 1993, OGMA became a Rolls-Royce Authorised Maintenance Center for the T56, AE 2100 and AE 3007A engines and, five years later, became an Authorised Maintenance Center for Embraer ERJ 145 aircraft. Since 1994 OGMA has manufactured most of the Pilatus PC-12's major structural components, including fuselage, wings, cargo and passenger doors, flaps, ailerons, rudder and wiring harnesses. In 2001, the company was contracted for repairs and modifications to 40 F-16 aircraft belonging to the Portuguese Air Force. In 2004, OGMA was privatised, and its ownership distributed between Embraer and EMPORDEF. On July 10, 2006, OGMA inaugurated the Executive Jets Center, created to improve the maintenance services of the Embraer Legacy 600 and future business jets developed by Embraer. Since 2013, OGMA has been involved in the Embraer KC-390's development program, including central fuselage manufacturing, fairing, metallic alloys, composite materials and elevons. OGMA participated in the initial phase of the aircraft's development and assumed responsibility for supply chain development and management, primarily relying upon Portuguese companies. In 2016, OGMA recorded a sales volume of 195.4 million Euros and a profit of 10.1 million Euros. In 2019, the company appointed Alexandre Solis as Chief Executive Officer. In 2017, aircraft maintenance, repair and overhaul services accounted for about 70% of OGMA's total business volume. , OGMA serviced approximately 40 clients from 70 countries. OGMA was criticised in 2020 by the Portuguese Office for the Prevention and Investigation of Accidents in Civil Aviation and Rail for faulty maintenance work that led to severe flight control problems with Air Astana Flight 1388 in 2018. The investigation found that insufficient quality assurance, oversight and management at OGMA contributed to the severe technical problems suffered by the aircraft in flight. OGMA is responsible for the fabrication of several parts for the Embraer C-390 Millennium, including the center fuselage, the fabrication and assembly of the right and left sponsons, and the depth rudders. It is also responsible for the assembly of various standard NATO equipment for the Portuguese Air Force C-390s. Facilities 
OGMA is located in Alverca, in the Alverca Aeronautical Park, approximately  north east of Lisbon International Airport. Its facilities occupy , of which  are covered facilities. The location also includes a  runway and a control tower. Its facilities comprise 11 hangars for civil and military aircraft maintenance, manufacturing and testing. References

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Aerospace companies of Portugal
Manufacturing companies established in 1918
Government-owned companies of Portugal
Portuguese brands
Airbus joint ventures
Embraer
Manufacturing plants in Portugal
Portuguese companies established in 1918
Defence companies of Portugal
Aircraft maintenance companies