Flying After Diving - Sherwood LOGIC Owner's Manual

WARNING: The LOGIC will not sense ambient pressures or provide Altitude compensation when it is wet.
DO NOT dive at any different Altitude until the unit shuts off and is reactivated at the new Altitude.
If the unit is activated at elevations higher than 14,000 feet (4,270 meters), it will perform a diagnostic
check followed by immediate shutdown.

FLYING AFTER DIVING

In 1990 the Undersea and Hyperbaric Medical Society (UHMS) published a set of guidelines aimed at minimizing the
possibility of decompression sickness due to flying too soon after diving. The UHMS suggests* divers using standard
air cylinders and exhibiting no symptoms of decompression sickness wait 24 hours after their last dive to fly in air-
craft with cabin pressures up to 8,000 feet. (2,440 meters). The two exceptions to this recommendation are:
•If a diver had less than 2 hours total accumulated dive time in the last 48 hours, then a 12 hour surface interval be-
fore flying is recommended.
•Following any dive that required a decompression stop, flying should be delayed for at least 24 hours, and if possi-
ble, for 48 hours.
Since the 1990 UHMS guidelines were introduced, data from the Diver's Alert Network (DAN) was introduced that
resulted in DAN's position** that "A minimum surface interval of only 12 hours would be required in order to be rea-
sonably assured a diver will remain symptom free upon ascent to altitude in a commercial jet airliner (altitude up to
8,000 feet/2,440 meters).
Divers who plan to make daily, multiple dives for several days, or make dives that require decompression stops,
should take special precautions and wait for an extended surface interval beyond 12 hours before flight".
* excerpted from "The UHMS Flying After Diving Workshop"
** excerpted from "DAN's Position on Recreational Flying After Diving"
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