It is important that airmen are aware of the process for reconstruction of the lost logs. The airman should begin with a signed and notarized statement of previous flight time as the basis for starting a new flight time record. Such a statement should be substantiated by all available evidence such as aircraft logbooks, receipts for aircraft rentals, and statements of flight operators. If unable to locate the instructors who gave the initial endorsements, it may be necessary to obtain the appropriate endorsements again. The FAA is also concerned with falsification of records.
Many airmen periodically copy their logbooks and place the copies in secure locations.
The logbook should be treated as a valuable personal document. You may want to reconsider carrying this document on every flight. Leaving it in your car, airplane or in your flight bag with high dollar headsets, that are targets for theft, is not recommended as well.