• The Acceptable Level of Safety Performance (ALoSP) defines how safe a State wants their aviation system to be.

    The UK ALoSP also sets the safety standards for the UK to have the trust and confidence of those encountering that system.

    Aviation is generally regarded as one of the safest modes of transportation.  When assessing aviation safety performance across the UK, we recognise that different safety standards are acceptable in different aviation sectors.  The intent is that, through State oversight, the safety performance of each sector will continue to inspire trust and confidence in UK aviation.

    The UK’s ALoSP

    “No accidents involving commercial air transport that result in serious injuries or fatalities. No serious injuries or fatalities to third parties as a result of aviation activities.” 

    The UK aims to achieve this ALoSP through State safety objectives that:

    • Protect people from aviation safety risks.
    • Reinforce the UK position as a global leader in aviation safety.
    • Positively influence aviation safety through collaborative working with our international partners.


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