Reporter at FL280 had to climb 400 ft in response to TCASII RA to avoid another aircraft.

Attributes
ACN	315536
Time
Date	199509
Day	Sat
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : sav
State Reference	GA
Altitude	msl bound lower : 28000 msl bound upper : 28000
Environment
Flight Conditions	IMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zjx
Operator	common carrier : air carrier
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 121
Flight Phase	cruise other
Flight Plan	IFR
Aircraft 2
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 121
Flight Phase	cruise other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 240 flight time total : 20000 flight time type : 800
ASRS Report	315536
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : commercial
Events
Anomaly	conflict : nmac non adherence : published procedure
Independent Detector	aircraft equipment other aircraft equipment : unspecified
Resolutory Action	flight crew : took evasive action
Consequence	faa : reviewed incident with flight crew
Miss Distance	horizontal : 0 vertical : 400
Supplementary
Primary Problem	ATC Human Performance
Air Traffic Incident	Operational Error

Narrative:

Cruise at FL280, approximately savannah 010 degree radial 140 NM, cleared direct savannah. TCASII showed target at 1 O'clock same altitude. Approximately 30 seconds later TCASII said climb at 2500 FPM. We started climb and target passed approximately 400 ft below, never seen by us. ATC said they had no problem, but captain got number of ZJX for call upon arrival at mco. ATC controller told target to turn to 360 degrees when inside our 10 mi circle. VHF frequency in use was 127.87. Last scan at scope showed target merging with us displaying 'plus 2' as altitude difference. Captain contacted ZJX and company system control upon landing in orlando.

Original NASA ASRS Text

Title: RPTR AT FL280 HAD TO CLB 400 FT IN RESPONSE TO TCASII RA TO AVOID ANOTHER ACFT.

Narrative: CRUISE AT FL280, APPROX SAVANNAH 010 DEG RADIAL 140 NM, CLRED DIRECT SAVANNAH. TCASII SHOWED TARGET AT 1 O'CLOCK SAME ALT. APPROX 30 SECONDS LATER TCASII SAID CLB AT 2500 FPM. WE STARTED CLB AND TARGET PASSED APPROX 400 FT BELOW, NEVER SEEN BY US. ATC SAID THEY HAD NO PROB, BUT CAPT GOT NUMBER OF ZJX FOR CALL UPON ARR AT MCO. ATC CTLR TOLD TARGET TO TURN TO 360 DEGS WHEN INSIDE OUR 10 MI CIRCLE. VHF FREQ IN USE WAS 127.87. LAST SCAN AT SCOPE SHOWED TARGET MERGING WITH US DISPLAYING 'PLUS 2' AS ALT DIFFERENCE. CAPT CONTACTED ZJX AND COMPANY SYS CTL UPON LNDG IN ORLANDO.

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.