B737 Next Generation Undifferentiated
Flight Crew Air Transport Pilot (ATP); Flight Crew Multiengine; Flight Crew Instrument
Flight Crew Last 90 Days 356; Flight Crew Type 12000
Aircraft Equipment Problem Less Severe
Flight Crew Overcame Equipment Problem
Aircraft
At 40;000 ft. MSL we experienced the Cabin Altitude Warning horn and light. We accomplished the immediate action items; the QRC and the QRH for Cabin Altitude Warning; and Emergency Descent. We started an emergency descent to 10;000 ft. MSL. The cabin altitude was at 11;000 ft. The oxygen masks did not deploy. The cabin altitude was controllable in manual and soon was below 8000 ft. and descending. We continued to [destination] at 10;000 ft. We briefed the flight attendants and made an announcement to the passengers. The rest of the flight was uneventful.
B737NG Captain reported a safe landing following loss of cabin pressure at FL400.