Glossary entry (derived from question below)
German term or phrase:
den Flugbereich eröffnen
English translation:
open up flight operations
German term
Germany
Scientific & technical expertise
Native in: English (Variant: British) 
Works in: German to English
den Flugbereich eröffnen
"... benötigen zur Durchführung von Erprobungsflügen, bei denen das Flug- und Betriebsverhalten eines Lfz festgestellt (Ersterprobung), der Flugbereich eröffnet oder ... eine TB nach dieser Regelung..."
* Sentence or paragraph where the term occurs: See above
* Document type: Regulations
* Target audience: Technical
* Country and dialect (source): German
* Country and dialect (target): American English
Cf. https://www.proz.com/kudoz/german-to-english/aerospace-aviat...
| 3 | open up flight operations |
Tim Bayton
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| 3 +2 | open the flight envelope |
Adrian MM.
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Proposed translations
Quick, Accurate, Reliable, Experienced
Native in: English
Works in: German to English, French to English
open up flight operations
Austria
Retd.T&I, Barrister & Austro-Advokat
Native in: English (Variants: Scottish, British)
Works in: Spanish to English, English to Spanish, French to English, and 5 more.
open the flight envelope
The new light jet trainer aircraft L-39NG from Czech aircraft manufacturer AERO Vodochody AEROSPACE a.s., opened the flight envelope up to the full range of expected heights and speeds
The flight envelope is based on the fact that the performance of the airplane is a function of altitude.
http://iate.europa.eu/search/standard/result/1590586783415/1
http://www.sciencedirect.com/topics/engineering/flight-envelope
| agree |
Bernd Runge
: That's more like it ...
2 hrs
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Danke schön and many thanks! Good thing that you are flying into this 'air traffic'....
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| agree |
Johanna Timm, PhD
: ...while being careful "not to push the envelope"
9 hrs
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Thanks. As mentioned on a ProZ question or two a few years ago, 'pushing the envelope' is more of an erudite North American idiom than a semi-literate British missive....
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Discussion
Flight operations ist der normale Flugbetrieb / die Flugbetriebsstaffel an einem Flugplatz.
"To conduct test flights in which the flight and operation behaviour of an aircraft is determined (initial testing), flight operations begin or operating limits are exceeded for the purposes of testing, pilots require… "