General (ICAO)
ICAO Annex 1 §1.2.5 requires licence holders to keep reliable records of their flight experience, to be produced to the State on request.
Europe (EASA / EU)
Regulation (EU) 1178/2011 Part-FCL.050 (Recording of flight time) specifies EU-wide:
Obligation:
- Every pilot holding a Part-FCL licence must maintain a reliable record of all flights.
- Form: pilot logbook in paper or approved electronic form (EFB apps with permanent storage).
- Content per flight:
- Date,
- Aircraft type and registration mark,
- Departure and arrival aerodrome,
- Off-block / on-block times (or take-off / landing),
- Function on board (PIC, PICUS, co-pilot, SPIC, dual),
- Number of landings (day/night separated),
- Flight conditions (day/night, VFR/IFR),
- Exercise type for training flights,
- Instructor name for dual flights,
- Remarks.
Retention:
- At least 5 years after the entry,
- To be produced on inspection by the competent authority.
Signature: Every entry signed by the PIC or instructor (electronic logbooks: appropriate digital form).
Crediting flight time (AMC1 FCL.050):
- PIC time: pilot acts as pilot-in-command — including SPIC time (Student Pilot in Command, with instructor on board but acting as PIC) which may be partially credited as PIC.
- Co-pilot time: multi-pilot operations as second pilot.
- Dual time: student under supervision of an instructor.
- Solo time (student): before licence issue, without instructor.
Block time vs. flight time:
- Block time (off-block to on-block) is recorded for some licences for administrative purposes;
- Flight time (take-off to landing) counts for most EASA experience requirements.
- For aeroplanes, block time is often accepted as flight time ("air time").
Consequences of inaccurate recording: Breach of FCL.050, possible licence revocation; false entry may be prosecuted criminally.
Germany (national)
EU law applies. LBA inspects logbooks during licence renewals, instructor renewals etc. In case of lost or stolen logbook: obtain written replacement confirmations from flight schools or operators.