T75 breaks off DC9 when not reporting a jetstream in sight on the parallel runway approach.

Attributes
ACN	523273
Time
Date	200108
Day	Tue
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : stl.airport
State Reference	MO
Altitude	msl single value : 3500
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : t75.tracon
Operator	common carrier : air carrier
Make Model Name	DC-9 30
Operating Under FAR Part	Part 121
Flight Phase	descent : intermediate altitude
Route In Use	approach : visual arrival : on vectors
Flight Plan	IFR
Aircraft 2
Controlling Facilities	tracon : t75.tracon
Operator	common carrier : air carrier
Make Model Name	Jetstream Series Commuter Aircraft
Operating Under FAR Part	Part 121
Flight Phase	descent : intermediate altitude descent : approach
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : flight engineer pilot : atp
Experience	flight time last 90 days : 100 flight time total : 12000 flight time type : 7000
ASRS Report	523273
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Events
Anomaly	conflict : airborne less severe
Independent Detector	atc equipment other atc equipment : radar other controllera other flight crewa
Resolutory Action	controller : issued advisory controller : issued new clearance flight crew : took precautionary avoidance action
Miss Distance	horizontal : 0 vertical : 1000
Supplementary
Problem Areas	Airport ATC Human Performance Airspace Structure Flight Crew Human Performance Environmental Factor
Primary Problem	ATC Human Performance

Narrative:

DC9 established on final approach (visual) assigned 3500 ft MSL, 180 KIAS by ATC. Approach clearance not yet received. ATC reported a jetstream converging with us 1000 ft below on base leg for runway 30R, variously at 1 O'clock, 2 O'clock, and 3 O'clock position. ATC repeatedly asked if we had traffic in sight. Jetstream was intermittently observed during its turn onto final approach. Due to the difficulty of maintaining visual contact with the maneuvering jetstream against the backgnd of the city and our rapid overtake, I did not report the traffic in sight. The jetstream rolled out on final 1000 ft below us and less than 1 mi ahead as reported by ATC and verified by our TCASII. Based on the TCASII display, we were still overtaking the jetstream at our assigned speed. The controller (by now seemed fairly agitated) again asked if we had the 'traffic 12 O'clock position less than 1 mi' in sight. The jetstream was by now nearly directly below us. It was obvious that the controller wanted us to assume separation responsibility for an aircraft that was impossible to see and would soon be behind us, if we didn't hit it first. Rather than break out the jetstream that had been vectored in front and below us, the controller broke us out for another approach -- apparently as punishment for our lack of cooperation.

Original NASA ASRS Text

Title: T75 BREAKS OFF DC9 WHEN NOT RPTING A JETSTREAM IN SIGHT ON THE PARALLEL RWY APCH.

Narrative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

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.