Crew Rest

Calculate minimum crew rest requirements based on your duty schedule.

How to Use#

1. Enter your report time (the time you start duty).
2. Enter your end of duty time.
3. The calculator computes:
   • Duty period duration
   • Minimum rest required before the next duty
   • Earliest next report time

Regulations#

The rest calculator follows standard EASA FTL regulations (ORO.FTL). Minimum rest is based on:

• Previous duty period length
• Whether the duty crossed multiple time zones
• Whether the duty included night operations

KSS Fatigue Info PRO#

For PRO users, each flight segment in the crew rest timeline displays additional fatigue information:

• Falling asleep probability – estimated likelihood of falling asleep during that segment
• Fatigue Status at landing – predicted KSS score and risk description at the time of landing

Input Caching#

All input fields are persisted for 24 hours and automatically restored when you reopen the calculator. This lets you return to a previous calculation without re-entering data.

Precision Toggle#

Switch between 1-minute and 5-minute granularity for all time inputs. Use 1-minute precision for exact scheduling or 5-minute steps for quicker entry.

Home Base & Body Clock#

• Home base UTC offset – automatically loaded from the airport database based on the home base configured in Settings
• Body clock calculation – displays your estimated body clock time based on your home base timezone, helping you assess circadian impact during layovers or time zone transitions

Rest Patterns#

Eight rest pattern types are available to model different in-flight rest schemes:

S/L Segment Adjustment#

For mixed patterns (SLS, SSLL, etc.), a slider lets you adjust the ratio between Short and Long segments to match the actual rest allocation on board.

Pause Duration#

Configure the pause between rest segments: 0, 5, 10, or 15 minutes. This accounts for handover time between crew members during in-flight rest.