WARNING HORN (INTERMITTENT)

Question 1

Go … (last)

Answer 1

If the intermittent warning horn sounds or a CABIN ALTITUDE light (if installed and operative) illuminates in flight at an airplane flight altitude above 10,000 feet MSL:

Don the oxygen mask and set the regulators to 100%
Establish crew communications

GO to the CABIN ALTITUDE WARNING or Rapid Depressurization checklist