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Citation C550 pilot has the cabin depressurize at altitude; declares emergency and executes an emergency descent.
| Attributes | |
| ACN | 703763 |
| Time | |
| Date | 200607 |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | atc facility : zzz.artcc |
| State Reference | US |
| Altitude | msl single value : 29000 |
| Environment | |
| Flight Conditions | IMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zzz.artcc |
| Operator | general aviation : corporate |
| Make Model Name | Citation II S2/Bravo |
| Operating Under FAR Part | Part 91 |
| Flight Phase | cruise : level |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : corporate |
| Function | flight crew : single pilot |
| Qualification | pilot : cfi pilot : atp |
| Experience | flight time last 90 days : 65 flight time total : 6700 flight time type : 178 |
| ASRS Report | 703763 |
| Events | |
| Anomaly | aircraft equipment problem : critical altitude deviation : excursion from assigned altitude |
| Independent Detector | aircraft equipment other aircraft equipment : cabin press controller other flight crewa |
| Resolutory Action | flight crew : diverted to another airport flight crew : overcame equipment problem flight crew : landed as precaution flight crew : declared emergency |
| Consequence | faa : reviewed incident with flight crew other |
| Supplementary | |
| Problem Areas | Flight Crew Human Performance Aircraft |
| Primary Problem | Aircraft |
Narrative:
While just finishing with flight watch I felt my ears feel a pressure change and within 30 seconds; heard air rushing noise by cabin door area and noticed cabin rate pegged at 3 O'clock position; 6000 FPM climb. I felt and knew we had a serious situation so I opted for emergency descent procedures leveled at 10000 ft. I put oxygen mask on microphone to mask; speaker on; throttle back; speed brakes out; 30 degree bank pitch over and descent at vmo. Tried to reach ATC -- no answer. In the blind report emergency descent and that we were experiencing a rapid depressurization. Flight watch then gave me approach frequency. We safely landed at ZZZ.
Original NASA ASRS Text
Title: CITATION C550 PLT HAS THE CABIN DEPRESSURIZE AT ALT; DECLARES EMER AND EXECUTES AN EMER DSCNT.
Narrative: WHILE JUST FINISHING WITH FLT WATCH I FELT MY EARS FEEL A PRESSURE CHANGE AND WITHIN 30 SECONDS; HEARD AIR RUSHING NOISE BY CABIN DOOR AREA AND NOTICED CABIN RATE PEGGED AT 3 O'CLOCK POS; 6000 FPM CLB. I FELT AND KNEW WE HAD A SERIOUS SITUATION SO I OPTED FOR EMER DSCNT PROCS LEVELED AT 10000 FT. I PUT OXYGEN MASK ON MIKE TO MASK; SPEAKER ON; THROTTLE BACK; SPD BRAKES OUT; 30 DEG BANK PITCH OVER AND DSCNT AT VMO. TRIED TO REACH ATC -- NO ANSWER. IN THE BLIND RPT EMER DSCNT AND THAT WE WERE EXPERIENCING A RAPID DEPRESSURIZATION. FLT WATCH THEN GAVE ME APCH FREQ. WE SAFELY LANDED AT ZZZ.
Data retrieved from NASA's ASRS site as of January 2009 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.