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Crj-700 captain reported aircraft had a pack temp followed by a bleed duct warning causing a pressurization loss.
| Attributes | |
| ACN | 1550858 |
| Time | |
| Date | 201612 |
| Local Time Of Day | 0601-1200 |
| Place | |
| Locale Reference | ZZZ.ARTCC |
| State Reference | US |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Make Model Name | Regional Jet 700 ER/LR (CRJ700) |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Cruise |
| Flight Plan | IFR |
| Component | |
| Aircraft Component | Air Conditioning and Pressurization Pack |
| Person 1 | |
| Function | Captain Pilot Not Flying |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Events | |
| Anomaly | Aircraft Equipment Problem Less Severe Flight Deck / Cabin / Aircraft Event Other / Unknown |
Narrative:
While in cruise flight at FL410; received left pack temperature EICAS caution message. Reduced outflow temperature from 77 to 35 degrees and caution message remained. Received a bleed duct warning message. Started running QRH procedures for warning. Crew donned oxygen masks and established crew communications. Notified ATC and initiated an emergency descent to 10;000 feet. During descent; cabin pressure altitude increased to approximately 15;000 feet and passenger oxygen masks were automatically deployed. Leveled off at 10;000 feet. Completed all emergency and abnormal checklists. Sent ACARS message to dispatcher listing events and plan. Diverted to ZZZ. Flight attendants reported no undue reaction from any of the passengers. Requested emts to meet us at the gate. No passenger(s) requested medical attention and all the passengers were rebooked on the next flight to ZZZ 1. Left pack temperature message followed by left bleed duct warning message.
Original NASA ASRS Text
Title: CRJ-700 Captain reported aircraft had a Pack Temp followed by a Bleed Duct warning causing a pressurization loss.
Narrative: While in cruise flight at FL410; received L PACK TEMP EICAS caution message. Reduced outflow temperature from 77 to 35 degrees and caution message remained. Received a BLEED DUCT warning message. Started running QRH procedures for warning. Crew donned oxygen masks and established crew communications. Notified ATC and initiated an emergency descent to 10;000 feet. During descent; cabin pressure altitude increased to approximately 15;000 feet and passenger oxygen masks were automatically deployed. Leveled off at 10;000 feet. Completed all emergency and abnormal checklists. Sent ACARS message to Dispatcher listing events and plan. Diverted to ZZZ. Flight Attendants reported no undue reaction from any of the passengers. Requested EMTs to meet us at the gate. No passenger(s) requested medical attention and all the passengers were rebooked on the next flight to ZZZ 1. L PACK TEMP message followed by L BLEED DUCT warning message.
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.