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B757-200 crew made an emergency descent after loss of cabin pressurization in muha international airspace.
| Attributes | |
| ACN | 620724 |
| Time | |
| Date | 200406 |
| Day | Mon |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | intersection : ursus |
| State Reference | FO |
| Altitude | msl single value : 35000 |
| Environment | |
| Flight Conditions | VMC |
| Aircraft 1 | |
| Controlling Facilities | artcc : muha.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | B757-200 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | cruise : level |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| ASRS Report | 620724 |
| Person 2 | |
| Function | flight crew : first officer |
| Qualification | pilot : instrument pilot : multi engine pilot : commercial |
| ASRS Report | 620562 |
| Events | |
| Anomaly | aircraft equipment problem : critical |
| Independent Detector | aircraft equipment other aircraft equipment : cabin alt warning horn other flight crewa other flight crewb |
| Resolutory Action | flight crew : declared emergency flight crew : landed in emergency condition other |
| Consequence | other other |
| Supplementary | |
| Problem Areas | Company Aircraft |
| Primary Problem | Aircraft |
Narrative:
Pressurization. Flight was dispatched to mia with the l-hand pack inoperative. Flight limited to maximum altitude of FL350. At FL350 approaching ursus intersection northbound, cabin altitude warning light illuminated with associated aural warning. Executed red box procedures for loss of cabin altitude, including deploying passenger oxygen. Declared an emergency with havana center and started emergency descent. Shortly after initiating descent, cabin altitude exceeded 10000 ft. Contacted ZMA for continued descent and direct routing to miami (destination). Descended to below 10000 ft immediately. Completed appropriate checklists and landed at destination with emergency vehicles standing by.
Original NASA ASRS Text
Title: B757-200 CREW MADE AN EMER DSCNT AFTER LOSS OF CABIN PRESSURIZATION IN MUHA INTL AIRSPACE.
Narrative: PRESSURIZATION. FLT WAS DISPATCHED TO MIA WITH THE L-HAND PACK INOP. FLT LIMITED TO MAX ALT OF FL350. AT FL350 APCHING URSUS INTXN NBOUND, CABIN ALT WARNING LIGHT ILLUMINATED WITH ASSOCIATED AURAL WARNING. EXECUTED RED BOX PROCS FOR LOSS OF CABIN ALT, INCLUDING DEPLOYING PAX OXYGEN. DECLARED AN EMER WITH HAVANA CTR AND STARTED EMER DSCNT. SHORTLY AFTER INITIATING DSCNT, CABIN ALT EXCEEDED 10000 FT. CONTACTED ZMA FOR CONTINUED DSCNT AND DIRECT ROUTING TO MIAMI (DEST). DSNDED TO BELOW 10000 FT IMMEDIATELY. COMPLETED APPROPRIATE CHKLISTS AND LANDED AT DEST WITH EMER VEHICLES STANDING BY.
Data retrieved from NASA's ASRS site as of July 2007 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.