Digital journey log
Pilots sign each flight when they save it. Later corrections need a reason and keep their history, and an inspector gets a PDF laid out like the grey book.
What it records
Once the journey log is switched on for an aircraft, signatures, corrections and voiding are enforced in the database, not just in the app's forms.
A flight is signed by the person who saves it. The signature comes from their own sign-in and never changes afterwards.
A flight can't be saved without the pilot's pre-flight check. If it was confirmed after landing, the recorded time shows that.
Pilots can fix their own entry until the end of the flight's day. After that, or when someone else makes the change, changing a legal field such as a time, landings, an airport or the pilot needs a reason. Who, when, why and the old and new values are kept.
A flight entered by mistake is voided with a reason. It stops counting but stays readable, with who voided it, when and why.
If your aircraft has an hour meter, record its reading. If it doesn't fit the logged time, the pilot is warned before signing, and admins are told if the flight is saved anyway.
Any member can create a PDF for a period, laid out like the opened BAZL book. Corrections, voided flights, defects and maintenance are numbered and listed in an appendix.
Moving from paper
Start using Tachly straight away. The paper book stays the legal record, and Tachly makes no claim to be.
Describe in a concept how you keep the log electronically, and have BAZL recognise it. The recognition is yours, for your concept: Tachly itself isn't an approved product.
An admin sets, per aircraft, the day from which Tachly is the journey log. Earlier flights stay in the paper book, which remains their record.
FAQ
Yes, once BAZL has recognised your concept for keeping it electronically (VLL Art. 20). Until then the paper book is the record. Outside Switzerland, ask your aviation authority.
No. You choose the day for each aircraft, once your concept is recognised. Flights before that day stay in the paper book, and backdating isn't intended: the day marks when the paper book stopped being the record.
The pilot can fix their own flight until the end of its day. After that, or if someone else corrects it, a change needs a reason, and the old and new values stay on record with who made it. If someone else corrects a flight, its pilot is notified.
The extract: a PDF for the period you choose, laid out like the opened grey BAZL book, with an appendix for anything that doesn't fit in a row. Any club member can create it. While the paper book is still the record, each page is marked as a copy.
No. The journey log belongs to the aircraft. Tachly can send your flights to LogTen Pilot Logbook or capzlog.aero, where your personal logbook stays.
One aircraft is free, forever, including the journey log. If you operate more than one, get in touch.
Set up your aircraft and log alongside the paper book. Switch the journey log on when your concept is recognised.