diff --git a/maintenance.md b/maintenance.md
index d79e68b..bc2991a 100644
--- a/maintenance.md
+++ b/maintenance.md
@@ -39,3 +39,4 @@ Newest entries at the bottom.
 - 2026-09-28: Gyroscopes recalibrated.
 - 2026-09-28: Hull inspection, no leaks.
 - 2026-09-30: Navigation lights checked.
+- 2026-10-01: Cabin pressure sensors tested.