Flight crew of a B757 stopped their descent to the ILS after approach control requested that they level off for traffic. They then observed a B767 pass below descending to a lower altitude.

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Attributes
ACN	473874
Time
Date	200005
Day	Sat
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : atl.airport
State Reference	GA
Altitude	msl single value : 6600
Environment
Flight Conditions	Mixed
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : atl.tracon
Operator	common carrier : air carrier
Make Model Name	B757 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Navigation In Use	ils localizer & glide slope : 26l other
Flight Phase	descent : vacating altitude
Route In Use	approach : instrument precision arrival : on vectors
Flight Plan	IFR
Aircraft 2
Controlling Facilities	tracon : atl.tracon
Operator	common carrier : air carrier
Operating Under FAR Part	Part 121
Flight Phase	descent : vacating altitude
Route In Use	arrival : on vectors
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp pilot : flight engineer
Experience	flight time last 90 days : 130 flight time total : 11500 flight time type : 300
ASRS Report	473874
Person 2
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument pilot : multi engine
Events
Anomaly	conflict : airborne less severe non adherence : required legal separation
Independent Detector	atc equipment other atc equipment : radar aircraft equipment : tcas other controllera
Resolutory Action	controller : issued advisory controller : issued new clearance controller : separated traffic
Miss Distance	horizontal : 9000 vertical : 400
Supplementary
Problem Areas	ATC Human Performance
Primary Problem	ATC Human Performance
Air Traffic Incident	Operational Error other

Narrative:

On vector 220 degrees magnetic and continued descent clearance to 6000 ft approximately 2.3 NM north of ILS runway 26L centerline, told to level off by ATC immediately, was passing 6600 ft, got TA indicating traffic at 6200 ft and descending. Aircraft passed 1-2 NM south of us on easterly heading. No comment/explanation given by ATC. No RA by TCASII.

Original NASA ASRS Text

Title: FLC OF A B757 STOPPED THEIR DSCNT TO THE ILS AFTER APCH CTL REQUESTED THAT THEY LEVEL OFF FOR TFC. THEY THEN OBSERVED A B767 PASS BELOW DSNDING TO A LOWER ALT.

Narrative: ON VECTOR 220 DEGS MAGNETIC AND CONTINUED DSCNT CLRNC TO 6000 FT APPROX 2.3 NM N OF ILS RWY 26L CTRLINE, TOLD TO LEVEL OFF BY ATC IMMEDIATELY, WAS PASSING 6600 FT, GOT TA INDICATING TFC AT 6200 FT AND DSNDING. ACFT PASSED 1-2 NM S OF US ON EASTERLY HEADING. NO COMMENT/EXPLANATION GIVEN BY ATC. NO RA BY TCASII.

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.