Incident at en route from Manchester to Philadelphia

Summary

2001-02-09: TSB Update February 8, 2001. A01A0009: USA197 a Boeing 767-2002 en route from Manchester to Philadelphia at FL390 requested descent to FL310 due to entering an area of forecasted moderate to severe turbulence (SIGMET B4). Gander OAC was unable to issue descent clearance due to conflicting traffic 7 minutes ahead at FL380. At 2047 USA197 declared an emergency, offset south and descended to FL310. The aircraft levelled at 2048Z and proceeded uneventfully en route.
2001-02-09: USA197 B762 enroute Manchester to Philadelphia at FL390 requested descent to FL310 due to entering an area of forecasted moderate to severe turbulence (SIGMET B4). Gander OAC was unable to issue descent clearance due to BAW51G 7 minutes ahead at FL380. At 2047 USA197 declared an emergency, offset south and descended to FL310. Acft levelled at 2048. A review of all Weather reports received by Gander IFSS revealed no reports of any severe turbulence. USA Dispatch advised they relayed an ACARS report from another US Air flight to USA197 of moderate to severe turbulence. TSB Evaluating

Details


CADORS Number 2001A0068
Occurrence Type Incident
Reported By NAV CANADA
Occurred At 2001-02-06 - 20:47
Day or Night? Day-time
Fatalities 0
Injuries
Aerodrome ID
Aerodrome Name
Geographic Location Gander Oceanic, Atlantic Region, en route from Manchester to Philadelphia
TSB Occurrence Number A01A0009
TSB Class of Investigation Class 5
AOR Number 13885
Reported By NAV CANADA
Categories Turbulence encounter,Other
Events



Aircraft Details (1 aircraft)

Type Aeroplane
 Silhouette image of Aeroplane
Canadian Registration
Foreign Registration
Country of Registration the United States of America
Occurrence Type Incident
Owner
Operator USAIR (1228) Commercial
Make  Silhouette image of BOEING
BOEING
Model 767 209
Year Built
Engine Type
Engine Make
Engine Model
Gear Type Land
Private No
Amateur Built No
Flight Number USA197
Flight Rule
CARS Subpart
Phase of Flight Cruise
Damage No Damage
Fatalities 0
Injuries 0
Events Weather - clear air turbulence (CAT)/turbulence,Declared emergency/priority

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