B767 crew had TCASII RA in ZAB class a airspace.

Attributes
ACN	493900
Time
Date	200012
Day	Fri
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : aeg.airport
State Reference	NM
Altitude	msl bound lower : 28000 msl bound upper : 29000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zab.artcc
Operator	common carrier : air carrier
Make Model Name	B767 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Navigation In Use	other other vortac
Flight Phase	cruise : level
Flight Plan	IFR
Aircraft 2
Controlling Facilities	artcc : zab.artcc
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Flight Phase	climbout : vacating altitude
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : cfi pilot : commercial pilot : flight engineer pilot : atp
Experience	flight time last 90 days : 180 flight time total : 8000 flight time type : 200
ASRS Report	493900
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
ASRS Report	493775
Events
Anomaly	conflict : airborne critical
Independent Detector	aircraft equipment : tcas other flight crewa other flight crewb
Resolutory Action	flight crew : took evasive action other
Miss Distance	vertical : 1000
Supplementary
Problem Areas	Flight Crew Human Performance ATC Human Performance
Primary Problem	Ambiguous

Narrative:

While in cruise at FL280, we received a TCASII alert for a possible traffic conflict with an oncoming aircraft. Aircraft was in a rapid climb within 5-10 mi. Shortly after the TA, we received an RA to climb. We initiated a climb to FL290. While in the climb, responding to the RA, we notified center that we were deviating from our assigned altitude due to the RA. Center responded that he had let us know as advisory only about the traffic. We did not hear any such notification from center about the traffic. It is possible that our initial transmission to center about our altitude deviation (due to the RA) that we had blocked his call about the traffic. We returned to our assigned altitude, and no further incident occurred. The aircraft in question was never seen visually.

Original NASA ASRS Text

Title: B767 CREW HAD TCASII RA IN ZAB CLASS A AIRSPACE.

Narrative: WHILE IN CRUISE AT FL280, WE RECEIVED A TCASII ALERT FOR A POSSIBLE TFC CONFLICT WITH AN ONCOMING ACFT. ACFT WAS IN A RAPID CLB WITHIN 5-10 MI. SHORTLY AFTER THE TA, WE RECEIVED AN RA TO CLB. WE INITIATED A CLB TO FL290. WHILE IN THE CLB, RESPONDING TO THE RA, WE NOTIFIED CTR THAT WE WERE DEVIATING FROM OUR ASSIGNED ALT DUE TO THE RA. CTR RESPONDED THAT HE HAD LET US KNOW AS ADVISORY ONLY ABOUT THE TFC. WE DID NOT HEAR ANY SUCH NOTIFICATION FROM CTR ABOUT THE TFC. IT IS POSSIBLE THAT OUR INITIAL XMISSION TO CTR ABOUT OUR ALTDEV (DUE TO THE RA) THAT WE HAD BLOCKED HIS CALL ABOUT THE TFC. WE RETURNED TO OUR ASSIGNED ALT, AND NO FURTHER INCIDENT OCCURRED. THE ACFT IN QUESTION WAS NEVER SEEN VISUALLY.

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.