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B767-300 flight crew reported diverting to an alternate airport after experiencing loss of cabin pressure related to single pack operation and a forward equipment overheat anomaly.
| Attributes | |
| ACN | 1496433 |
| Time | |
| Date | 201711 |
| Local Time Of Day | 0001-0600 |
| Place | |
| Locale Reference | ZZZ.Airport |
| State Reference | US |
| Environment | |
| Flight Conditions | VMC |
| Light | Night |
| Aircraft 1 | |
| Make Model Name | B767-300 and 300 ER |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Cruise |
| Flight Plan | IFR |
| Component | |
| Aircraft Component | Pressurization System |
| Person 1 | |
| Function | First Officer Pilot Flying |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Person 2 | |
| Function | Pilot Not Flying Captain |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Events | |
| Anomaly | Aircraft Equipment Problem Critical |
Narrative:
During cruise; we received a fwd equip ovht message. We ran the QRH for the issue. While that was being resolved; we received a cabin altitude master warning. We donned oxygen masks; attempted to control the cabin altitude. That didn't work; so we executed an [expedited] descent and [advised] ATC. They vectored us to the nearest suitable airport. Attempts to contact company in the air were unsuccessful due to high terrain. We landed without incident.equipment cooling checklist should discuss going to ovrd in single pack operations and the possibility of a cabin altitude warning.
Original NASA ASRS Text
Title: B767-300 flight crew reported diverting to an alternate airport after experiencing loss of cabin pressure related to single pack operation and a forward equipment overheat anomaly.
Narrative: During cruise; we received a FWD Equip OVHT message. We ran the QRH for the issue. While that was being resolved; we received a Cabin Altitude Master Warning. We donned oxygen masks; attempted to control the cabin altitude. That didn't work; so we executed an [expedited] descent and [advised] ATC. They vectored us to the nearest suitable airport. Attempts to contact company in the air were unsuccessful due to high terrain. We landed without incident.Equipment cooling checklist should discuss going to OVRD in single pack operations and the possibility of a cabin altitude warning.
Data retrieved from NASA's ASRS site 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.