<< >> NASA ASRS Report 282064, August 1994

Flight crew of large transport did not respond to TCASII warning during a vector to final due to sighting of traffic.

Attributes
ACN	282064
Time
Date	199408
Day	Wed
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : mia
State Reference	FL
Altitude	msl bound lower : 2500 msl bound upper : 2500
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : mia tower : ccs
Operator	common carrier : air carrier
Make Model Name	B727 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	descent : approach
Flight Plan	IFR
Aircraft 2
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Operating Under FAR Part	other : unknown
Flight Phase	descent : approach
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : flight engineer pilot : commercial pilot : atp
Experience	flight time last 90 days : 174 flight time total : 4700 flight time type : 1800
ASRS Report	282064
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	conflict : airborne less severe non adherence : published procedure non adherence other
Independent Detector	aircraft equipment other aircraft equipment : unspecified other flight crewa
Resolutory Action	flight crew : returned to intended course or assigned course flight crew : took evasive action
Consequence	Other
Miss Distance	horizontal : 4000 vertical : 100
Supplementary
Primary Problem	ATC Human Performance
Air Traffic Incident	other

Narrative:

We were on vectors for ILS runway 9R approach to mia while simultaneous parallel runway approachs were in progress. Downwind leg, advised by approach control to expect 6 NM base leg. After giving us a 010 degree vector for base leg, controller was distracted by requests for information from a couple other aircraft. We observed an aircraft on base leg for runway 9L directly ahead at same altitude and, when it became apparent that we were going to fly through final approach course, we initiated a turn to avoid traffic and reintercept final. Once in turn, TCASII issued an RA to climb, but due to position of traffic (behind and over our left wing due to our right turn) compliance was not appropriate and actually considered unsafe. We were subsequently cleared by approach for visual approach.

Related reports:

• Flight crew of an medium large transport failed to report th...
• Flight crew of an medium large transport stopped their visua...
• Small transport pilot cancels IFR on sighting ground. Then e...

	Enter your search terms Submit search form
	Web www.37000feet.com

Original NASA ASRS Text

Title: FLC OF LGT DID NOT RESPOND TO TCASII WARNING DURING A VECTOR TO FINAL DUE TO SIGHTING OF TFC.

Narrative: WE WERE ON VECTORS FOR ILS RWY 9R APCH TO MIA WHILE SIMULTANEOUS PARALLEL RWY APCHS WERE IN PROGRESS. DOWNWIND LEG, ADVISED BY APCH CTL TO EXPECT 6 NM BASE LEG. AFTER GIVING US A 010 DEG VECTOR FOR BASE LEG, CTLR WAS DISTRACTED BY REQUESTS FOR INFO FROM A COUPLE OTHER ACFT. WE OBSERVED AN ACFT ON BASE LEG FOR RWY 9L DIRECTLY AHEAD AT SAME ALT AND, WHEN IT BECAME APPARENT THAT WE WERE GOING TO FLY THROUGH FINAL APCH COURSE, WE INITIATED A TURN TO AVOID TFC AND REINTERCEPT FINAL. ONCE IN TURN, TCASII ISSUED AN RA TO CLB, BUT DUE TO POS OF TFC (BEHIND AND OVER OUR L WING DUE TO OUR R TURN) COMPLIANCE WAS NOT APPROPRIATE AND ACTUALLY CONSIDERED UNSAFE. WE WERE SUBSEQUENTLY CLRED BY APCH FOR VISUAL APCH.

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.