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A C550 climbed to FL430 where it encountered stall buffet and approach to stall. Emergency declared with descent to FL390.
| Attributes | |
| ACN | 630590 |
| Time | |
| Date | 200409 |
| Day | Mon |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : zzz.artcc |
| State Reference | US |
| Altitude | msl single value : 43000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zzz.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | Citation II S2/Bravo |
| Operating Under FAR Part | Part 91 |
| Navigation In Use | other |
| Flight Phase | cruise : enroute altitude change cruise : level |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : corporate |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : commercial |
| Experience | flight time last 90 days : 50 flight time total : 5500 flight time type : 1500 |
| ASRS Report | 630590 |
| Person 2 | |
| Affiliation | company : corporate |
| Function | flight crew : first officer |
| Events | |
| Anomaly | other anomaly other |
| Independent Detector | other flight crewa |
| Resolutory Action | flight crew : declared emergency flight crew : regained aircraft control flight crew : took precautionary avoidance action |
| Consequence | Other |
| Supplementary | |
| Problem Areas | Flight Crew Human Performance |
| Primary Problem | Flight Crew Human Performance |
Narrative:
I was at FL390 but wanted to climb to FL430 in order to save fuel and try to get from ZZZ-ZZZ1 non stop. The aoa was at .2 so I thought I was light enough to make FL430. I reached FL430, but the aoa was too high. I requested lower, but they did not give it to me. The aircraft buffeted and began to stall. I declared an emergency and descended to FL390 at which time I cancelled the emergency.
Original NASA ASRS Text
Title: A C550 CLBED TO FL430 WHERE IT ENCOUNTERED STALL BUFFET AND APCH TO STALL. EMER DECLARED WITH DSCNT TO FL390.
Narrative: I WAS AT FL390 BUT WANTED TO CLB TO FL430 IN ORDER TO SAVE FUEL AND TRY TO GET FROM ZZZ-ZZZ1 NON STOP. THE AOA WAS AT .2 SO I THOUGHT I WAS LIGHT ENOUGH TO MAKE FL430. I REACHED FL430, BUT THE AOA WAS TOO HIGH. I REQUESTED LOWER, BUT THEY DID NOT GIVE IT TO ME. THE ACFT BUFFETED AND BEGAN TO STALL. I DECLARED AN EMER AND DSNDED TO FL390 AT WHICH TIME I CANCELLED THE EMER.
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.