Sillagefren

The logbook that doesn't fly away.

Your hours logged, signed, backed up — never lost. The EASA logbook that stays yours.

Try it first

50 early-access test spots — now boarding.

Student

Your instructor signs on your screen, next to you, in ten seconds — and the line is sealed. Your solo release? Authorised with one signature before the flight, and the act lives on YOUR phone: you show it without asking anyone. No more correction fluid.

Pilot

Fast entry, night time computed automatically, passenger recency, your map of visited airfields, your stats, the SEP revalidation gauge. All on your phone, all without a network.

Instructor

Sign with a single gesture on the pilot's screen: your initials, your name, your licence number — nothing to install on your side. Authorise a solo before the flight: your signature covers your student's flight, with your certificate's category frozen into it.

Everything Sillage does, in the clear

  • Fast, frictionless flight entry — sixteen rules read over your shoulder, name the offending field and take you to it
  • Everything works with no network: aerodromes, registrations and types are IN the app — 19,277 ICAO codes, 48,053 registrations, 1,468 type designators
  • Your instructor signs on YOUR screen, the old-fashioned way: their initials, their name, their licence number — no app, no account, no connection needed
  • Every signed line is sealed: changing a time afterwards breaks verification, and it shows
  • Your logbook prints in the official layout, ready to present and sign — and it needs no service to be read
  • Automatic night time and night-landing calculation, from the departure aerodrome's twilight
  • Expiry reminders: medical, ratings, access badge — anything in your logbook that carries a date
  • Your aircraft's on-board folder: POH, insurance, ARC at hand — with their expiry reminders
  • Carry your earlier hours forward: one sum, one date, and your gauges start from your real hours
  • Solo release: the authorisation signed before the flight, the wording written automatically, and the act living on the student's phone — shown without asking anyone
  • Passenger recency and SEP revalidation gauge, computed as you log
  • Official logbook (AMC1 FCL.050) composed on your phone in under a second, plus a working CSV
  • Map of visited airfields, hours per aircraft, per year and per function

Your data doesn't fly away

  • Your logbook never leaves your phone. No account, no server holding it: we have no database to query, lose or sell.
  • Your backup sits in YOUR iCloud, not ours — we have no access to it. Delete the app, reinstall it: the logbook comes back.
  • Your exports are yours: official PDF and CSV in one click, dropped into Files › Sillage, where they open without Sillage and outlive it.
  • Every signed line is sealed inside your phone: changing it afterwards breaks the seal, and it shows.

Designed and published by a working flight instructor. EASA Part-FCL format, AMC1 FCL.050 columns.

A logbook that counts

Electronic logbooks are accepted by the regulation: FCL.050 requires a reliable record, not a particular medium. Columns follow AMC1 FCL.050, the print export reproduces the paper layout, signatures are sealed inside your device. PDF and CSV export in one click.

Be one of the first 50 aboard

The app is coming. The first 50 sign-ups try it early via TestFlight, free — and the app stays theirs: Sillage is bought once, kept forever. Leave your address, we'll handle the rest.

During the test phase, stay careful with your data: export your logbook regularly. Everything is done to avoid losses, but a test is a test.

A question? Contact us.Frequently asked questions