Question: When was the Germany's most famous female aviator and test pilot died who test flown the "Sea Eagle"?

Context articles: Adrienne Bolland
Sanford's sea eagle
Olga Yamshchikova
White-bellied sea eagle
Suzanna Darcy-Henneman
Hans Jacobs
Air Force Test Center
Hanna Reitsch
Honghe National Nature Reserve
Aircraft Research and Development Unit RAAF

Adrienne Bolland, born Boland, (25 November 1895 – 18 March 1975) was a French test pilot and the first woman to fly over the Andes between Chile and Argentina.
 She was later described as "France's most accomplished female aviator", setting a woman's record for loops done in an hour.
 The French government eventually recognized her with the Legion of Honor and other awards.
 Since her death, she has been commemorated with a postage stamp.
The Sanford's sea eagle ("Haliaeetus sanfordi"), sometimes listed as Sanford's fish eagle or Solomon eagle, is a sea eagle endemic to the Solomon Islands.
 The "sea eagle" name is to be preferred, to distinguish the species of "Haliaeetus" from the closely related "Ichthyophaga" true fish eagles.
 The species was described in 1935 by Ernst Mayr who noticed that earlier observers had overlooked it, thinking it was a juvenile of the white-bellied sea eagle.
Olga Nikolayevna Yamshchikova (Russian: Ольга Николаевна Ямщикова ) (1914-1983) was Soviet female aviator, aviation instructor, Soviet Air Force commander, and test pilot.
 Nicknamed "granny of the Soviet aviation".
 Three confirmed kills during the Great Patriotic War.
 Awarded Order of the Great Patriotic War, Order of the Red Star (three times), several medals and Order of the Red Banner of Labor.
The white-bellied sea eagle ("Haliaeetus leucogaster"), also known as the white-breasted sea eagle, is a large diurnal bird of prey in the family Accipitridae.
 Originally described by Johann Friedrich Gmelin in 1788, it is closely related to Sanford's sea eagle of the Solomon Islands, and the two are considered a superspecies.
 A distinctive bird, the adult white-bellied sea eagle has a white head, breast, under-wing coverts and tail.
 The upper parts are grey and the black under-wing flight feathers contrast with the white coverts.
 The tail is short and wedge-shaped as in all "Haliaeetus" species.
 Like many raptors, the female is slightly larger than the male, and can measure up to 90 cm long with a wingspan of up to 2.2 m , and weigh 4.5 kg .
 Immature birds have brown plumage, which is gradually replaced by white until the age of five or six years.
 The call is a loud goose-like honking.
Suzanna Darcy-Henneman is a Boeing test pilot and lead test pilot of Boeing 777 program.
 She was a pilot of a record breaking 21,602.22 km flight from Hong Kong to London over the Pacific Ocean, America, and the Atlantic on November 9, 2005 in a Boeing 777-200LR.
 She joined Boeing in 1974, spent seven years as engineer, became trainer of airline pilots, and in 1985 was named Boeing Production Test pilot.
Hans Jacobs (30 April 1907 - 24 October 1994) was a German sailplane designer and pioneer.
 He had been taught sailplane design by Alexander Lippisch, designer of many gliders during the 1920s and the 1930s.
 As the head of the "Deutsche Forschungsanstalt für Segelflug" (DFS - German Research Institute for Sailplane Flight) at Darmstadt in the years before World War II, he was responsible for a number of highly successful designs, including the DFS Rhönsperber, DFS Rhönadler, DFS Habicht, DFS Weihe, DFS Kranich, and the DFS 230 assault glider.
 Hans also designed a glider-seaplane, the "Sea Eagle", test flown by Hanna Reitsch.
 In 1936, Hans developed self-operating dive brakes, on the upper and lower surface of each wing, for gliders.
 He designed the DFS 230 used in the Battle of Fort Eben-Emael.
The Air Force Test Center (AFTC) is a development and test organization of the United States Air Force.
 It conducts research, development, test, and evaluation of aerospace systems from concept to deployment.
 It has test flown every aircraft in the Army Air Force's and the Air Force's inventory since World War II.
 The center employs nearly 13,000 people and controls the second largest base in the Air Force.
Hanna Reitsch (29 March 1912 – 24 August 1979) was Germany's most famous female aviator and test pilot, starting in the early 1930s.
 During the Nazi era, she served as an international representative for the regime.
The Honghe National Nature Reserve (HNNR), is a 218.35 km2 Ramsar Convention-designated site in Heilongjiang Province in northeastern China.
 It was first established in 1984 as a provincial wetland reserve, and was upgraded to be a national nature reserve in 1996.
 173 birds are known from the Reserve including protected species such as black stork, black-billed capercaillie, greater spotted eagle, the Kamchatkan or Steller's sea eagle, mandarin duck, Oriental white stork, red-crowned crane, white-naped crane, white-tailed sea eagle, and whooper swan.
The Royal Australian Air Force's Aircraft Research and Development Unit (ARDU) plans, conducts and analyses the results of ground and flight tests of existing and new Air Force aircraft.
 ARDU consists of four flights located at RAAF Bases Edinburgh, Amberley, Richmond and Williamtown, staffed by qualified test pilots, flight test engineers and flight test system specialists.
 Up until 2016 the Squadron also conducted flight test for the Australian Army with Army personnel also working within the unit.
 The flight test crew are long course trained at test pilot schools including the United States Air Force Test Pilot School, the United States Naval Test Pilot School, the Empire Test Pilots' School, the École du personnel navigant d'essais et de réception and the National Test Pilot School.