If a diver has less than 2 hours total accumulated dive time in the last 48 hours, a 12 hour surface interval before flying is recommended

Following any dive that required a decompression stop, flying should be delayed for at least 24 hours, and if possible, for 48 hours

Suunto recommends that flying is avoided until all the DAN and UHMS guidelines, as well as the dive computer’s no-fly conditions, are satisfied

7.1.5. MEMORY mode

The memory options include a dive planner (MEMplan), dive logbook (MEMlog) and dive history (MEMhis). They are accessed from DIVE mode and you can toggle between them by using the UP/DOWN buttons.

The dive time and date are registered in the Logbook memory. Always check before diving that the time and date are correctly set, especially after traveling between different time zones.

Dive Planning mode (MEMplan)

The Dive Planning mode displays no-decompression times for a new dive, taking into account the effects of previous dives.

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Suunto D9 manual Memory mode, Dive Planning mode MEMplan