TCASII logic. Air carrier X received TCASII RA from air carrier Y 1500 ft above and still climbed.

Attributes
ACN	268232
Time
Date	199404
Day	Sat
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : atl
State Reference	GA
Altitude	msl bound lower : 3500 msl bound upper : 5000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : atl
Operator	common carrier : air carrier
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Operating Under FAR Part	Part 121
Flight Phase	descent : approach ground : parked
Flight Plan	IFR
Aircraft 2
Operator	common carrier : air carrier
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Operating Under FAR Part	Part 121
Flight Phase	cruise other descent : approach
Flight Plan	IFR
Person 1
Affiliation	government : faa
Function	controller : approach
Qualification	controller : radar
Experience	controller radar : 12
ASRS Report	268232
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	altitude deviation : excursion from assigned altitude conflict : airborne less severe non adherence : clearance
Independent Detector	aircraft equipment other aircraft equipment : unspecified
Resolutory Action	flight crew : returned to intended course or assigned course flight crew : took evasive action
Consequence	Other
Miss Distance	vertical : 1200
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Air carrier X on ILS runway 9R at tizzy intersection advised he was climbing on a TCASII RA. There was no traffic below him. The only air carrier Y was on parallel heading on runway 8L above him at 5000 ft. X climbed from 3500 ft to 3800 ft before he resumed the ILS approach. I was working the final monitor 'a' position. This TCASII event is very similar to an event 20 mins later by aircraft Z. That event is on another NASA form.

Original NASA ASRS Text

Title: TCASII LOGIC. ACR X RECEIVED TCASII RA FROM ACR Y 1500 FT ABOVE AND STILL CLBED.

Narrative: ACR X ON ILS RWY 9R AT TIZZY INTXN ADVISED HE WAS CLBING ON A TCASII RA. THERE WAS NO TFC BELOW HIM. THE ONLY ACR Y WAS ON PARALLEL HDG ON RWY 8L ABOVE HIM AT 5000 FT. X CLBED FROM 3500 FT TO 3800 FT BEFORE HE RESUMED THE ILS APCH. I WAS WORKING THE FINAL MONITOR 'A' POS. THIS TCASII EVENT IS VERY SIMILAR TO AN EVENT 20 MINS LATER BY ACFT Z. THAT EVENT IS ON ANOTHER NASA FORM.

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.