Air carrier X vectored around VFR traffic unable to hear ATC clearance because of TCASII alert noise...

Attributes
ACN	273757
Time
Date	199406
Day	Sun
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : tul
State Reference	OK
Altitude	msl bound lower : 8500 msl bound upper : 8500
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : dca
Operator	common carrier : air carrier
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 121
Flight Phase	climbout : intermediate altitude
Route In Use	enroute : on vectors enroute airway : tul
Flight Plan	IFR
Aircraft 2
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Operating Under FAR Part	Part 91
Flight Phase	cruise other
Route In Use	enroute : direct
Flight Plan	VFR
Person 1
Affiliation	government : faa
Function	controller : departure
Qualification	controller : radar
Experience	controller radar : 5
ASRS Report	273757
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	conflict : airborne less severe
Independent Detector	aircraft equipment other aircraft equipment : unspecified other controllera
Resolutory Action	controller : issued new clearance other
Consequence	Other
Miss Distance	horizontal : 12000 vertical : 0
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	other

Narrative:

Air carrier X on climb out was given a vector around traffic Y. I observed on his airway (J98) opposite direction at 8500 ft. X observed traffic first on TCASII then visually. When clear of the conflict I attempted to assign a vector back to X's assigned route but was advised 'you were blocked by TCASII advisory.' as a result, I had to reissue my control instruction which was necessary both to return the aircraft to its route and avoid another air carrier to the northeast of X. Since the traffic was no longer a factor, the TCASII advisory was disruptive to both the crew and the controller.

Original NASA ASRS Text

Title: ACR X VECTORED AROUND VFR TFC UNABLE TO HEAR ATC CLRNC BECAUSE OF TCASII ALERT NOISE.

Narrative: ACR X ON CLBOUT WAS GIVEN A VECTOR AROUND TFC Y. I OBSERVED ON HIS AIRWAY (J98) OPPOSITE DIRECTION AT 8500 FT. X OBSERVED TFC FIRST ON TCASII THEN VISUALLY. WHEN CLR OF THE CONFLICT I ATTEMPTED TO ASSIGN A VECTOR BACK TO X'S ASSIGNED RTE BUT WAS ADVISED 'YOU WERE BLOCKED BY TCASII ADVISORY.' AS A RESULT, I HAD TO REISSUE MY CTL INSTRUCTION WHICH WAS NECESSARY BOTH TO RETURN THE ACFT TO ITS RTE AND AVOID ANOTHER ACR TO THE NE OF X. SINCE THE TFC WAS NO LONGER A FACTOR, THE TCASII ADVISORY WAS DISRUPTIVE TO BOTH THE CREW AND THE CTLR.

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.