<< >> NASA ASRS Report 519863, August 2001

B757 makes TCASII evasive maneuver when turning base to final runway 16R from an MD80 on the opposite side for runway 16L under S46 control.

Attributes
ACN	519863
Time
Date	200108
Day	Wed
Local Time Of Day	1801 To 2400
Place
Locale Reference	navaid : sea.vortac
State Reference	WA
Altitude	msl single value : 4200
Environment
Flight Conditions	Mixed
Light	Dusk
Aircraft 1
Controlling Facilities	tracon : s46.tracon artcc : zau.artcc
Operator	common carrier : air carrier
Make Model Name	B757-200
Operating Under FAR Part	Part 121
Navigation In Use	other
Flight Phase	descent : approach
Route In Use	arrival : on vectors
Flight Plan	IFR
Aircraft 2
Controlling Facilities	tracon : s46.tracon
Operator	common carrier : air carrier
Make Model Name	MD-80 Series (DC-9-80) Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	descent : approach
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 150 flight time total : 19600 flight time type : 800
ASRS Report	519863
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Events
Anomaly	conflict : airborne critical inflight encounter : weather non adherence : published procedure non adherence : required legal separation
Independent Detector	aircraft equipment : tcas other flight crewa
Resolutory Action	flight crew : took evasive action
Miss Distance	horizontal : 5000 vertical : 0
Supplementary
Problem Areas	Airspace Structure ATC Human Performance Weather
Primary Problem	ATC Human Performance
Air Traffic Incident	Operational Error

Narrative:

TCASII RA. RA given as we descended to 4000 ft, talking to approach control. Head-to-head closure with MD80, landing runway 16R. Aircraft were both turning south to join final approach, my aircraft runway 16L. Controller was unnecessarily rushing the procedure. We were in clouds just prior to point of closest contact.

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Original NASA ASRS Text

Title: B757 MAKES TCASII EVASIVE MANEUVER WHEN TURNING BASE TO FINAL RWY 16R FROM AN MD80 ON THE OPPOSITE SIDE FOR RWY 16L UNDER S46 CTL.

Narrative: TCASII RA. RA GIVEN AS WE DSNDED TO 4000 FT, TALKING TO APCH CTL. HEAD-TO-HEAD CLOSURE WITH MD80, LNDG RWY 16R. ACFT WERE BOTH TURNING S TO JOIN FINAL APCH, MY ACFT RWY 16L. CTLR WAS UNNECESSARILY RUSHING THE PROC. WE WERE IN CLOUDS JUST PRIOR TO POINT OF CLOSEST CONTACT.

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.