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Old 23rd Feb 2021, 15:54
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ASRAAMTOO
 
Join Date: Mar 2018
Location: UK
Posts: 182
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The RAF Manual of Flying defines Service Ceiling as you say. Volume 1 Chapter 14 para 14.
Other definitions could be Absolute Ceiling: which I believe is how high you can get in level flight and Operational Ceiling which could be the maximum height permitted for all manner of other reasons. For example: max permitted cabin pressure differential, the max altitude it was tested to, the max height the Aircrew Equipment Assembly works to etc.
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