zero-timed

zero-timed

Overhauling an aeroengine to its “service limits.” It is not the same as “good as new” or factory remanufactured.
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On the other hand, a factory overhauled engine isn't considered zero-timed. The total time on the engine remains the same (and keeps counting) but it earns the "zero-time since factory overhauled" status.
The upgraded S-61 helicopters will undergo a full structural refurbishment with all major dynamic components zero-timed and key upgrades provided, including new composite main rotor blades (CMRB) and a survivability suite, SAS said.