<< >> NASA ASRS Report 276225, July 1994

During vector to an ILS approach to parallel runways, flight crew of medium large transport descend in response to a TCASII RA.

Attributes
ACN	276225
Time
Date	199407
Day	Mon
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : msp
State Reference	MN
Altitude	msl bound lower : 2600 msl bound upper : 3000
Environment
Flight Conditions	IMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : msp
Operator	common carrier : air carrier
Make Model Name	Commercial Fixed Wing
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 : atp pilot : instrument pilot : flight engineer pilot : commercial
Experience	flight time last 90 days : 150 flight time total : 4500 flight time type : 150
ASRS Report	276225
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	conflict : airborne less severe non adherence : required legal separation other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : unspecified other flight crewa
Resolutory Action	controller : issued new clearance flight crew : took evasive action other
Consequence	faa : reviewed incident with flight crew
Miss Distance	horizontal : 3000 vertical : 500
Supplementary
Primary Problem	ATC Human Performance
Air Traffic Incident	Operational Error

Narrative:

We were being vectored by msp approach control for an ILS approach to runway 11R. At 3000 ft MSL, we were assigned a heading of 090 degrees, but were not told to intercept the localizer or the ILS for runway 11R. As we flew through the course, I asked approach if they wanted us to intercept. They said yes and gave us a turn back to 220 degrees. At the same time we received an RA on our TCASII and were instructed to descend immediately. We did so to avoid a conflict with traffic on the parallel runway 11L. We descended to approximately 2600 ft and were then clear of the conflict. We were then instructed to climb back to 3000 ft and to continue on a heading of 220 degrees. We were then vectored back around for a second time for an ILS approach to runway 11R. On the ground in msp we called approach control. They pulled the tapes and confirmed that we were not cleared for the approach to runway 11R, and that we were not in the wrong.

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Original NASA ASRS Text

Title: DURING VECTOR TO AN ILS APCH TO PARALLEL RWYS, FLC OF MLG DSND IN RESPONSE TO A TCASII RA.

Narrative: WE WERE BEING VECTORED BY MSP APCH CTL FOR AN ILS APCH TO RWY 11R. AT 3000 FT MSL, WE WERE ASSIGNED A HDG OF 090 DEGS, BUT WERE NOT TOLD TO INTERCEPT THE LOC OR THE ILS FOR RWY 11R. AS WE FLEW THROUGH THE COURSE, I ASKED APCH IF THEY WANTED US TO INTERCEPT. THEY SAID YES AND GAVE US A TURN BACK TO 220 DEGS. AT THE SAME TIME WE RECEIVED AN RA ON OUR TCASII AND WERE INSTRUCTED TO DSND IMMEDIATELY. WE DID SO TO AVOID A CONFLICT WITH TFC ON THE PARALLEL RWY 11L. WE DSNDED TO APPROX 2600 FT AND WERE THEN CLR OF THE CONFLICT. WE WERE THEN INSTRUCTED TO CLB BACK TO 3000 FT AND TO CONTINUE ON A HDG OF 220 DEGS. WE WERE THEN VECTORED BACK AROUND FOR A SECOND TIME FOR AN ILS APCH TO RWY 11R. ON THE GND IN MSP WE CALLED APCH CTL. THEY PULLED THE TAPES AND CONFIRMED THAT WE WERE NOT CLRED FOR THE APCH TO RWY 11R, AND THAT WE WERE NOT IN THE WRONG.

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.