B727 executes TCASII RA descent to avoid descending carj under S56 control.

Attributes
ACN	514631
Time
Date	200106
Day	Sun
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : hif.airport
State Reference	UT
Altitude	msl bound lower : 12000 msl bound upper : 12900
Environment
Light	Night
Aircraft 1
Controlling Facilities	tracon : s56.tracon
Operator	common carrier : air carrier
Make Model Name	B727-200
Operating Under FAR Part	Part 121
Navigation In Use	other vortac
Flight Phase	climbout : intermediate altitude
Flight Plan	IFR
Aircraft 2
Controlling Facilities	tracon : s56.tracon
Operator	common carrier : air carrier
Make Model Name	Challenger Jet Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	cruise : level
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : second officer
Qualification	pilot : flight engineer
ASRS Report	514631
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Events
Anomaly	conflict : airborne critical
Independent Detector	aircraft equipment : tcas other flight crewa
Resolutory Action	flight crew : took evasive action flight crew : took precautionary avoidance action
Consequence	faa : reviewed incident with flight crew
Miss Distance	horizontal : 0 vertical : 500
Supplementary
Problem Areas	Flight Crew Human Performance ATC Human Performance
Primary Problem	ATC Human Performance

Narrative:

Departed slc to the north. Climbing through approximately 10000 ft on runway heading with slc TRACON, we were told to maintain a good rate of climb through 12000 ft and to come right to 130 degrees to intercept the slc 094 degree radial outbound. Slc TRACON then radioed that a regional jet was at 3 O'clock position and 10 mi, had us in sight and would maintain visual separation. At 12500 ft we sighted regional jet at 2 O'clock position, 5 NM and 100 ft below us -- right when we received a TA from the TCASII. At 12900 ft, he was at 2 O'clock position, 3 NM with constant bearing, decreasing range -- TCASII progresses from TA to RA. We descended to respond to the RA. Regional jet passed directly overhead with approximately 500 ft of separation. When we landed at dfw, captain spoke to the slc TRACON supervisor on duty to file a near-midair report.

Original NASA ASRS Text

Title: B727 EXECUTES TCASII RA DSCNT TO AVOID DSNDING CARJ UNDER S56 CTL.

Narrative: DEPARTED SLC TO THE N. CLBING THROUGH APPROX 10000 FT ON RWY HEADING WITH SLC TRACON, WE WERE TOLD TO MAINTAIN A GOOD RATE OF CLB THROUGH 12000 FT AND TO COME RIGHT TO 130 DEGS TO INTERCEPT THE SLC 094 DEG RADIAL OUTBOUND. SLC TRACON THEN RADIOED THAT A REGIONAL JET WAS AT 3 O'CLOCK POS AND 10 MI, HAD US IN SIGHT AND WOULD MAINTAIN VISUAL SEPARATION. AT 12500 FT WE SIGHTED REGIONAL JET AT 2 O'CLOCK POS, 5 NM AND 100 FT BELOW US -- RIGHT WHEN WE RECEIVED A TA FROM THE TCASII. AT 12900 FT, HE WAS AT 2 O'CLOCK POS, 3 NM WITH CONSTANT BEARING, DECREASING RANGE -- TCASII PROGRESSES FROM TA TO RA. WE DSNDED TO RESPOND TO THE RA. REGIONAL JET PASSED DIRECTLY OVERHEAD WITH APPROX 500 FT OF SEPARATION. WHEN WE LANDED AT DFW, CAPT SPOKE TO THE SLC TRACON SUPVR ON DUTY TO FILE A NEAR-MIDAIR RPT.

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.