The advert says
This role is 42 hours per week contracted to 9 hours per shift on a rota covering the operational hours of 05:30 to 23:25.
it then goes on to say
Flexible attitude to working hours, work activities and an ability to work shifts as the role will involve working an operational shift pattern providing cover up to 24 hours, averaging 42 hours per week including weekends
I read that as being your shifts will be 05:30 to 23:25 but you maybe asked to work outside these hours - for example to cover for delayed flights etc. If it means regular working outside of the operational hours its poorly written IMHO