You will be able to submit your logbooks and supporting documents through the CAAS Self-Service Lockers which are accessible 24/7. You may send a request to CAAS_PEL_FCL@caas.gov.sg for a locker to be allocated. An email and SMS will be sent to you once a locker has been assigned. The locker will be made available for 7 calendar days from (and including) the date of notification.