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B757 aircraft in cruise, oceanic route, encountered moderate to severe turbulence. Center controller couldn't provide altitude change because of lack of radar contact, so reporter captain declared emergency and climbed out of the turbulence.
| Attributes | |
| ACN | 383444 |
| Time | |
| Date | 199710 |
| Day | Sun |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | atc facility : sie |
| State Reference | NJ |
| Altitude | msl bound lower : 31000 msl bound upper : 38000 |
| Aircraft 1 | |
| Controlling Facilities | artcc : zny |
| Operator | common carrier : air carrier |
| Make Model Name | B757 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other Other |
| Flight Phase | climbout : intermediate altitude cruise other |
| Route In Use | enroute : other oceanic enroute : atlantic enroute airway : zny |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| ASRS Report | 383444 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : instrument pilot : commercial |
| Events | |
| Anomaly | altitude deviation : excursion from assigned altitude inflight encounter : weather other anomaly other other spatial deviation |
| Independent Detector | other flight crewa |
| Resolutory Action | flight crew : took evasive action flight crew : declared emergency flight crew : exited adverse environment |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Weather |
Narrative:
At FL310 approaching champ, received word of turbulence ahead. Attempted to change altitudes via commercial radio. Advised that no other altitudes were available. Contacted ZNY on VHF but were not in radar contact. ZNY could not provide altitude change or deviation. Encountered moderate to severe turbulence north of champ. Declared an emergency and executed a climbing right turn back to champ. ZNY was advised of our altitude and track. From over champ at FL380 we proceeded directly to pvd. Radar contact established 25 mi north of champ. Canceled the emergency and cleared to FL390 by center. Advised dispatch and proceeded to bos without incident. No passenger or crew injured.
Original NASA ASRS Text
Title: B757 ACFT IN CRUISE, OCEANIC RTE, ENCOUNTERED MODERATE TO SEVERE TURB. CTR CTLR COULDN'T PROVIDE ALT CHANGE BECAUSE OF LACK OF RADAR CONTACT, SO RPTR CAPT DECLARED EMER AND CLBED OUT OF THE TURB.
Narrative: AT FL310 APCHING CHAMP, RECEIVED WORD OF TURB AHEAD. ATTEMPTED TO CHANGE ALTS VIA COMMERCIAL RADIO. ADVISED THAT NO OTHER ALTS WERE AVAILABLE. CONTACTED ZNY ON VHF BUT WERE NOT IN RADAR CONTACT. ZNY COULD NOT PROVIDE ALT CHANGE OR DEV. ENCOUNTERED MODERATE TO SEVERE TURB N OF CHAMP. DECLARED AN EMER AND EXECUTED A CLBING R TURN BACK TO CHAMP. ZNY WAS ADVISED OF OUR ALT AND TRACK. FROM OVER CHAMP AT FL380 WE PROCEEDED DIRECTLY TO PVD. RADAR CONTACT ESTABLISHED 25 MI N OF CHAMP. CANCELED THE EMER AND CLRED TO FL390 BY CTR. ADVISED DISPATCH AND PROCEEDED TO BOS WITHOUT INCIDENT. NO PAX OR CREW INJURED.
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.