
08/09/2025
Fatigue often creeps in subtly and by the time it’s obvious, it may already be impacting your performance.
So how can you spot the early signs?
A fellow pilot shared the key warning signals that can reveal fatigue before it takes over.
And beyond self-checks, there’s a tool to help:
The Karolinska Sleepiness Scale (KSS) — from 1 (extremely alert) to 9 (fighting sleep)
- A score of 7 or higher means you’re too tired to fly safely -
🛫 Don’t brush it off. Report it. Step down if needed.
👉 Check our updated Fatigue Reporting Toolkit (link in bio).
What’s the first sign of fatigue you usually notice?