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UK Civil Aviation Regulations

These are published by the CAA on our UK Regulations pages. EU Regulations and EASA Access Guides published by EASA no longer apply in the UK. Our website and publications are being reviewed to update all references. Any references to EU law and EASA Access guides should be disregarded and where applicable the equivalent UK versions referred to instead.

Once there has been clinical resolution of the infection with no lasting neurological deficit the remaining risk is the development of epilepsy.  Aseptic viral meningitis carries no significant risk, bacterial (pyogenic) meningitis a small increase, viral encephalitis a moderate risk and cerebral abscess a high risk.

Condition Class 1  Class 2
 Aseptic viral meningitis Unrestricted after 6 months   Unrestricted after 6 months
 Bacterial meningitis
   - Without seizure
   - With seizure (in acute phase) 
Unrestricted after 12 months 
OML after 2 years & unrestricted after 5 years  
 Unrestricted after 12 months
 Unrestricted after 2 years

 Viral Encephalitis
   - Without seizure
   - With seizure (in acute phase) 

OML after 18 months & unrestricted after 5 years 
OML after 3 years & unrestricted not possible 
 Unrestricted after 18 months
 Unrestricted after 3 years
 Cerebral abscess Not possible   Not possible