A B757-200 flight crew executed a wind shear escape maneuver when encountering turbulence and IAS fl...

Attributes
ACN	933845
Time
Date	201102
Local Time Of Day	0601-1200
Place
Locale Reference	RJAA.Airport
State Reference	FO
Environment
Flight Conditions	IMC
Light	Daylight
Aircraft 1
Make Model Name	B757-200
Operating Under FAR Part	Part 121
Flight Phase	Initial Approach
Flight Plan	IFR
Person 1
Function	Pilot Flying Captain
Qualification	Flight Crew Multiengine Flight Crew Flight Engineer Flight Crew Air Transport Pilot (ATP)
Experience	Flight Crew Last 90 Days 180 Flight Crew Total 16000 Flight Crew Type 4000
Person 2
Function	First Officer Pilot Not Flying
Qualification	Flight Crew Multiengine Flight Crew Air Transport Pilot (ATP)
Experience	Flight Crew Last 90 Days 200 Flight Crew Total 10000 Flight Crew Type 3600
Events
Anomaly	Deviation - Speed All Types Inflight Event / Encounter Weather / Turbulence

Narrative:

Captain was flying an ILS 34L approach to rjaa. No significant weather was displayed on the radar. We were about 15 miles from the airport; established on the localizer; passing 4;500 for 4;000 ft MSL. The flaps were at 1; airspeed was about 190 KTS. Encountered moderate turbulence and gained about 30 KTS. Wind shear recovery procedure was executed. As we executed the wind shear recovery procedure; we encountered severe turbulence (large fluctuations of angle of bank; pitch; altitude; and airspeed). Then we lost 50 KTS of airspeed and momentarily got the stick shaker. Finished recovery procedure and made a PIREP reporting the severe turbulence/windshear. Captain chose to return for another ILS 34L approach behind another aircraft which was uneventful. There were no reported injuries or complaints from any of the passengers or the crew.

Original NASA ASRS Text

Title: A B757-200 flight crew executed a wind shear escape maneuver when encountering turbulence and IAS fluctuations of +30 KTS to -50 KTS while on an ILS approach to RJAA.

Narrative: Captain was flying an ILS 34L approach to RJAA. No significant weather was displayed on the radar. We were about 15 miles from the airport; established on the localizer; passing 4;500 for 4;000 FT MSL. The flaps were at 1; airspeed was about 190 KTS. Encountered moderate turbulence and gained about 30 KTS. Wind Shear Recovery Procedure was executed. As we executed the Wind Shear Recovery Procedure; we encountered severe turbulence (large fluctuations of angle of bank; pitch; altitude; and airspeed). Then we lost 50 KTS of airspeed and momentarily got the stick shaker. Finished recovery procedure and made a PIREP reporting the severe turbulence/windshear. Captain chose to return for another ILS 34L approach behind another aircraft which was uneventful. There were no reported injuries or complaints from any of the passengers or the crew.

Data retrieved from NASA's ASRS site as of April 2012 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.

A B757-200 flight crew executed a wind shear escape maneuver when encountering turbulence and IAS fluctuations of +30 KTS to -50 KTS while on an ILS approach to rjaa.