-
Forgetting
to watch the time and staying down too long.
-
Using
air quicker than planned due to overshooting depth, getting caught in
a current, getting lost, nitrogen narcosis, diving in cold water,
getting caught in kelp or fishing line.
-
Sudden
regulator malfunction due to corrosion or too much time between
overhaul.
-
O-ring
failure on any of the First stage regulator ports.
-
Regulator
stuck in "free-flow" due to foreign particles or sand.
-
Regulator
"freezing up" in cold water leaving you suddenly without
air.
-
Stuck
Pressure Gauge reflecting incorrect pressure in your tank.
-
Air
cut off due to tank valve not turned on all the way.
-
Rupture
of SCUBA tank o-ring due to misalignment or wear.
-
Second
stage regulator diaphragm develops a tear or slips out of place.
-
O-ring
failure on BC air inflator or valve stuck in the open position.
-
Burst
disc failure on SCUBA Tank valve due to corrosion or age.
-
Clogged
filter on first stage regulator due to sediment or rust from tank.
-
Leak
develops at any one of the High or Low pressure hose fittings.
-
Mouthpiece
on second stage suddenly coming off regulator.
-
O-ring
failure on pressure gauge.
-
Rupture
of either High or Low Pressure hoses.
-
O-ring
failure on Octopus regulator.
-
Rental
tank not filled completely.
-
Damaged
First stage regulator due to falling object / impact.
-
High
or Low pressure hose cut or severed on sharp rock / impediment.
(Source:
Dive accident logs, published articles in dive magazines, and letters from
SPARE AIR customers.)