Piece
See AVIA 6/10425
Catalogue reference: AVIA 6/40425
See AVIA 6/10425
Piece
Catalogue reference: AVIA 6/26171
This record is about the Exploratory appraisal of helicopter acoustic signature detection dating from 1982 Feb 01 - 1982 Feb 28 in the series Ministry of Defence and predecessors: Royal Aircraft Factory, later Royal Aircraft.... It is held at The National Archives, Kew.
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Exploratory appraisal of helicopter acoustic signature detection
AVIA 6
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Records created or inherited by the Ministry of Aviation and successors, the Air...
Ministry of Defence and predecessors: Royal Aircraft Factory, later Royal Aircraft...
Exploratory appraisal of helicopter acoustic signature detection
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