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After being alerted by the cabin altitude warning horn; the flight crew of a B737-300 descended to FL190 where they were able to re-establish control of the cabin altitude with manual control of the pressurization outflow valve.
| Attributes | |
| ACN | 967190 |
| Time | |
| Date | 201108 |
| Local Time Of Day | 0001-0600 |
| Place | |
| Locale Reference | GCK.VORTAC |
| State Reference | KS |
| Environment | |
| Flight Conditions | IMC |
| Aircraft 1 | |
| Make Model Name | B737-300 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Cruise |
| Flight Plan | IFR |
| Component | |
| Aircraft Component | Pressurization System |
| Person 1 | |
| Function | First Officer |
| Experience | Flight Crew Last 90 Days 153 |
| Person 2 | |
| Function | Captain |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Experience | Flight Crew Last 90 Days 214 |
| Events | |
| Anomaly | Aircraft Equipment Problem Critical Flight Deck / Cabin / Aircraft Event Illness |
Narrative:
Cruise at FL360; the cabin altitude warning horn sounded. Both pilots donned oxygen masks and established communication. ATC immediately cleared us to FL190. We started a descent and accomplished the cabin altitude warning horn/abnormal pressurization checklist per the QRH. After selecting pressurization to manual and positioning the outflow valve we were able to drive the cabin altitude down and maintain the proper pressurization schedule for the remainder of the flight at FL190. The passengers were unaware that anything happened.after stabilizing the pressurization; a flight attendant chimed us with a possible medical situation. A 47-year old male passenger with a pre-existing medical condition experienced sharp sinus pain between the eyes and forehead; headache; and slightly blurred vision. We contacted dispatch; established contact with medical resources and arranged to have emts waiting for us upon arrival.
Original NASA ASRS Text
Title: After being alerted by the cabin altitude warning horn; the flight crew of a B737-300 descended to FL190 where they were able to re-establish control of the cabin altitude with manual control of the pressurization outflow valve.
Narrative: Cruise at FL360; the cabin altitude warning horn sounded. Both pilots donned oxygen masks and established communication. ATC immediately cleared us to FL190. We started a descent and accomplished the cabin altitude warning horn/abnormal pressurization checklist per the QRH. After selecting pressurization to manual and positioning the outflow valve we were able to drive the cabin altitude down and maintain the proper pressurization schedule for the remainder of the flight at FL190. The passengers were unaware that anything happened.After stabilizing the pressurization; a Flight Attendant chimed us with a possible medical situation. A 47-year old male passenger with a pre-existing medical condition experienced sharp sinus pain between the eyes and forehead; headache; and slightly blurred vision. We contacted Dispatch; established contact with medical resources and arranged to have EMTs waiting for us upon arrival.
Data retrieved from NASA's ASRS site as of April 2012 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.