Svzm ARTCC climbed another aircraft through the reporter's altitude.

Attributes
ACN	328112
Time
Date	199602
Day	Sun
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : cbc
State Reference	FO
Altitude	msl bound lower : 37000 msl bound upper : 37000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : svzm
Operator	common carrier : air carrier
Make Model Name	B767 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Navigation In Use	Other Other
Flight Phase	cruise other cruise other
Flight Plan	IFR
Aircraft 2
Operator	common carrier : air carrier
Make Model Name	B767 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Navigation In Use	Other Other
Flight Phase	climbout : intermediate altitude
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
ASRS Report	328112
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Events
Anomaly	conflict : airborne less severe non adherence : required legal separation other anomaly other
Independent Detector	other flight crewa other other : unspecified
Resolutory Action	flight crew : returned to intended course or assigned course flight crew : took evasive action
Consequence	faa : reviewed incident with flight crew
Miss Distance	horizontal : 15000 vertical : 800
Supplementary
Primary Problem	ATC Human Performance
Air Traffic Incident	Operational Error

Narrative:

At approximately 60 NM north of the vagan intersection traveling sbound on UA315, under miq control, I received a TCASII TA followed immediately by an RA to make a right climbing turn. Began the evasive maneuver and saw an air carrier B767 proceeding northbound towards us. I completed the evasive maneuver and returned to our clearance altitude of 37000 ft. Based upon my conversation with the other crew, it appears that miq control had cleared other aircraft to climb from 35000 ft to 39000 ft. I estimate that we came within 2-3 mi and 800 ft. Callback conversation with reporter revealed the following information: the reporter states that the airspace in the svzm area is 'like a freeway. Everybody congregates there at the same time, both directions. Both the reporter and the oncoming aircraft took evasive action and both aircraft called svzm to ask about the other traffic. They got the usual response, svzm clammed up and wouldn't talk to them. The reporter and the other aircraft talked to each other on the 'common frequency' after the incident. The reporter heard the other aircraft receive a clearance to climb, so was somewhat prepared for another aircraft in the vicinity. This was in daylight VMC. The reporter has not experienced this situation before in this area, but he has heard many similar stories from other crew persons.

Original NASA ASRS Text

Title: SVZM ARTCC CLBED ANOTHER ACFT THROUGH THE RPTR'S ALT.

Narrative: AT APPROX 60 NM N OF THE VAGAN INTXN TRAVELING SBOUND ON UA315, UNDER MIQ CTL, I RECEIVED A TCASII TA FOLLOWED IMMEDIATELY BY AN RA TO MAKE A R CLBING TURN. BEGAN THE EVASIVE MANEUVER AND SAW AN ACR B767 PROCEEDING NBOUND TOWARDS US. I COMPLETED THE EVASIVE MANEUVER AND RETURNED TO OUR CLRNC ALT OF 37000 FT. BASED UPON MY CONVERSATION WITH THE OTHER CREW, IT APPEARS THAT MIQ CTL HAD CLRED OTHER ACFT TO CLB FROM 35000 FT TO 39000 FT. I ESTIMATE THAT WE CAME WITHIN 2-3 MI AND 800 FT. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THE RPTR STATES THAT THE AIRSPACE IN THE SVZM AREA IS 'LIKE A FREEWAY. EVERYBODY CONGREGATES THERE AT THE SAME TIME, BOTH DIRECTIONS. BOTH THE RPTR AND THE ONCOMING ACFT TOOK EVASIVE ACTION AND BOTH ACFT CALLED SVZM TO ASK ABOUT THE OTHER TFC. THEY GOT THE USUAL RESPONSE, SVZM CLAMMED UP AND WOULDN'T TALK TO THEM. THE RPTR AND THE OTHER ACFT TALKED TO EACH OTHER ON THE 'COMMON FREQ' AFTER THE INCIDENT. THE RPTR HEARD THE OTHER ACFT RECEIVE A CLRNC TO CLB, SO WAS SOMEWHAT PREPARED FOR ANOTHER ACFT IN THE VICINITY. THIS WAS IN DAYLIGHT VMC. THE RPTR HAS NOT EXPERIENCED THIS SIT BEFORE IN THIS AREA, BUT HE HAS HEARD MANY SIMILAR STORIES FROM OTHER CREW PERSONS.

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.