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- aonad am-scaoilte barastatach Reference Faomhadh an téarma seo mar chuid de Thionscadal Lex
- ga
- BTRU | barostatic time release unit
- en
- Definition the combined altitude sensing and timing device fitted to release automatically the seat harness locks,etc.,at the correct time or altitude during the ejection sequence Reference Multilingual Aeronautical Dictionary(AGARD,1980)