Air carrier Y non adherence to ATC clearance visual approach to parallel runway had conflict with air carrier X TCASII RA evasive action taken. Pilot deviation.

Home

Browse by month

Random

Latest

About

Contact

Attributes
ACN	252065
Time
Date	199309
Day	Sat
Local Time Of Day	1801 To 2400
Place
Locale Reference	atc facility : sea
State Reference	WA
Altitude	agl bound lower : 1500 agl bound upper : 2500
Environment
Flight Conditions	VMC
Light	Dusk
Aircraft 1
Controlling Facilities	tower : sea tower : pdx
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Navigation In Use	Other
Flight Phase	descent : approach landing : go around
Flight Plan	IFR
Aircraft 2
Operator	common carrier : air carrier
Make Model Name	Widebody, Low Wing, 4 Turbojet Eng
Navigation In Use	Other
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 : 100 flight time total : 5000 flight time type : 400
ASRS Report	252065
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument
Events
Anomaly	conflict : airborne less severe non adherence : clearance other spatial deviation
Independent Detector	aircraft equipment other aircraft equipment : unspecified other flight crewa
Resolutory Action	flight crew : took evasive action other
Consequence	Other
Miss Distance	vertical : 1000
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Air carrier X ord-sea took evasive action to avoid air carrier Y. Air carrier X was on a visual approach to sea runway 16L at or about 1500 ft AGL when air carrier Y in a rapid descent overflew runways 16R and 16L passing 1000 ft on top of air carrier X. Air carrier X questioned sea approach about air carrier Y course of action and broke off normal approach to avoid air carrier Y. Air carrier X responded to a TCASII RA. WX was good with visibility greater than 15 mi. Air carrier X made a safe and normal landing after deviating from approach. Air carrier Y was in sight at all times.

Original NASA ASRS Text

Title: ACR Y NON ADHERENCE TO ATC CLRNC VISUAL APCH TO PARALLEL RWY HAD CONFLICT WITH ACR X TCASII RA EVASIVE ACTION TAKEN. PLTDEV.

Narrative: ACR X ORD-SEA TOOK EVASIVE ACTION TO AVOID ACR Y. ACR X WAS ON A VISUAL APCH TO SEA RWY 16L AT OR ABOUT 1500 FT AGL WHEN ACR Y IN A RAPID DSCNT OVERFLEW RWYS 16R AND 16L PASSING 1000 FT ON TOP OF ACR X. ACR X QUESTIONED SEA APCH ABOUT ACR Y COURSE OF ACTION AND BROKE OFF NORMAL APCH TO AVOID ACR Y. ACR X RESPONDED TO A TCASII RA. WX WAS GOOD WITH VISIBILITY GREATER THAN 15 MI. ACR X MADE A SAFE AND NORMAL LNDG AFTER DEVIATING FROM APCH. ACR Y WAS IN SIGHT AT ALL TIMES.

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.