Originally Posted by
Lost in Saigon
A slow pinhole leak is only dangerous if the crew allows themselves to become distracted to the point they ignore the aircraft's automated warnings.
When the cabin altitude reaches 10,000 feet an alarm will notify the crew. At roughly 13,000 feet the passenger oxygen masks will drop.
Not only that but ACARS would have issued a message with the Cabin Altitude warning. This would occur before anyone was affected. No such ACARS has been admitted to.