B727 departure from yyz received TCASII RA instruction leveling at FL280.

Attributes
ACN	582629
Time
Date	200305
Day	Mon
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : cyyz.airport
State Reference	ON
Altitude	msl single value : 28000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : czyz.artcc
Operator	common carrier : air carrier
Make Model Name	B727-200
Operating Under FAR Part	Part 121
Flight Phase	climbout : intermediate altitude
Route In Use	departure : on vectors
Flight Plan	IFR
Aircraft 2
Controlling Facilities	artcc : czyz.artcc
Operator	common carrier : air carrier
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 121
Flight Phase	cruise : level
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : flight engineer pilot : commercial pilot : cfi pilot : instrument pilot : atp
Experience	flight time last 90 days : 85 flight time total : 5100 flight time type : 1805
ASRS Report	582629
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Events
Anomaly	altitude deviation : excursion from assigned altitude conflict : airborne less severe
Independent Detector	aircraft equipment : tcas other flight crewa
Resolutory Action	flight crew : returned to assigned altitude flight crew : took evasive action
Consequence	faa : reviewed incident with flight crew
Miss Distance	horizontal : 6000 vertical : 600
Supplementary
Problem Areas	Flight Crew Human Performance ATC Human Performance
Primary Problem	Ambiguous

Narrative:

While leveling off at FL280, the TCASII gave a TA. We saw that an aircraft was 600 ft below us. The TCASII then gave us an increase climb. We continued to climb through FL280 to FL290, while looking for our traffic. We had a visual contact with an airliner at our 12 O'clock position, and then quickly returned to our assigned altitude of FL280. ZOB asked about our climb to FL290. We explained we had an RA to increase climb. Supplemental information from acn 582633: center did not advise of any traffic, or inform us that we might be in violation. They only inquired about our altitude. I think we may have had military aircraft below us, but did not see any traffic.

Original NASA ASRS Text

Title: B727 DEP FROM YYZ RECEIVED TCASII RA INSTRUCTION LEVELING AT FL280.

Narrative: WHILE LEVELING OFF AT FL280, THE TCASII GAVE A TA. WE SAW THAT AN ACFT WAS 600 FT BELOW US. THE TCASII THEN GAVE US AN INCREASE CLB. WE CONTINUED TO CLB THROUGH FL280 TO FL290, WHILE LOOKING FOR OUR TFC. WE HAD A VISUAL CONTACT WITH AN AIRLINER AT OUR 12 O'CLOCK POS, AND THEN QUICKLY RETURNED TO OUR ASSIGNED ALT OF FL280. ZOB ASKED ABOUT OUR CLB TO FL290. WE EXPLAINED WE HAD AN RA TO INCREASE CLB. SUPPLEMENTAL INFO FROM ACN 582633: CTR DID NOT ADVISE OF ANY TFC, OR INFORM US THAT WE MIGHT BE IN VIOLATION. THEY ONLY INQUIRED ABOUT OUR ALT. I THINK WE MAY HAVE HAD MIL ACFT BELOW US, BUT DID NOT SEE ANY TFC.

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.