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B717 captain reported a cabin rate ead alert related to duct failure led to a diversion to an alternate airport.
| Attributes | |
| ACN | 1697201 |
| Time | |
| Date | 201910 |
| Local Time Of Day | 0601-1200 |
| Place | |
| Locale Reference | ZZZ.Airport |
| State Reference | US |
| Environment | |
| Flight Conditions | VMC |
| Light | Night |
| Aircraft 1 | |
| Make Model Name | B717 (Formerly MD-95) |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Cruise |
| Flight Plan | IFR |
| Component | |
| Aircraft Component | APU Pneumatic System & Ducting |
| Person 1 | |
| Function | Captain Check Pilot |
| Qualification | Flight Crew Air Transport Pilot (ATP) Flight Crew Instrument Flight Crew Multiengine |
| Events | |
| Anomaly | Aircraft Equipment Problem Critical Deviation - Procedural Published Material / Policy |
Narrative:
Level at FL260. Midway between ZZZ and ZZZ1 we felt a pressure bump and very soon after the cabin rate ead alert illuminated. While I was running that checklist the cabin altitude ead alert illuminated. We donned our oxygen masks; ran the appropriate emergency checklist and performed an emergency descent per the cabin rate emergency checklist. We [requested priority handling]; diverted to ZZZ2; and landed without further incident. Maintenance informed that a section of ducting in the tailcone separated. Maintenance also advised that there was a cpc fault detected in the FMS maintenance review.
Original NASA ASRS Text
Title: B717 Captain reported a CABIN RATE EAD alert related to duct failure led to a diversion to an alternate airport.
Narrative: Level at FL260. Midway between ZZZ and ZZZ1 we felt a pressure bump and very soon after the CABIN RATE EAD alert illuminated. While I was running that checklist the CABIN ALTITUDE EAD alert illuminated. We donned our oxygen masks; ran the appropriate emergency checklist and performed an emergency descent per the CABIN RATE emergency checklist. We [Requested Priority Handling]; diverted to ZZZ2; and landed without further incident. Maintenance informed that a section of ducting in the tailcone separated. Maintenance also advised that there was a CPC fault detected in the FMS MAINT review.
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.