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37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
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A300 maintaining FL310 encountered moderate turbulence and requested lower altitude. Told to stand by. Elected to use emergency authority/authorized and descended to FL280. Received clearance immediately.
| Attributes | |
| ACN | 360143 |
| Time | |
| Date | 199702 |
| Day | Sat |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : pta |
| State Reference | FO |
| Altitude | msl bound lower : 28000 msl bound upper : 31000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : mdcs |
| Operator | common carrier : air carrier |
| Make Model Name | A300 |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other |
| Flight Phase | cruise other other |
| Route In Use | enroute : other oceanic |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| ASRS Report | 360143 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : commercial pilot : instrument |
| Events | |
| Anomaly | altitude deviation : excursion from assigned altitude inflight encounter other non adherence : clearance other anomaly other |
| Independent Detector | other flight crewa |
| Resolutory Action | controller : issued new clearance flight crew : exited adverse environment flight crew : declared emergency |
| Consequence | Other |
Narrative:
FL310, encountered moderate turbulence. Requested lower. Told to stand by FL310, opted above moderate turbulence penetration altitude. Captain exercised emergency authority/authorized and descended to FL280. Clearance came immediately.
Original NASA ASRS Text
Title: A300 MAINTAINING FL310 ENCOUNTERED MODERATE TURB AND REQUESTED LOWER ALT. TOLD TO STAND BY. ELECTED TO USE EMER AUTH AND DSNDED TO FL280. RECEIVED CLRNC IMMEDIATELY.
Narrative: FL310, ENCOUNTERED MODERATE TURB. REQUESTED LOWER. TOLD TO STAND BY FL310, OPTED ABOVE MODERATE TURB PENETRATION ALT. CAPT EXERCISED EMER AUTH AND DSNDED TO FL280. CLRNC CAME IMMEDIATELY.
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.