TCASII commanded a climb to avoid another aircraft in controled airspace.

Attributes
ACN	206981
Time
Date	199204
Day	Sun
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : unz airport : gum
State Reference	GU
Altitude	msl bound lower : 16000 msl bound upper : 16400
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	Large Transport, Low Wing, 3 Turbojet Eng
Flight Phase	cruise other
Route In Use	enroute : other oceanic enroute : pacific enroute airway : zua enroute other
Flight Plan	IFR
Aircraft 2
Operator	common carrier : air carrier
Make Model Name	Large Transport, Low Wing, 3 Turbojet Eng
Flight Phase	cruise other
Route In Use	enroute : other oceanic enroute : pacific enroute other
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : cfi pilot : atp pilot : flight engineer
Experience	flight time last 90 days : 150 flight time total : 15000 flight time type : 100
ASRS Report	206981
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : atp pilot : commercial pilot : flight engineer
Experience	flight time last 90 days : 120 flight time total : 4000 flight time type : 120
ASRS Report	207063
Events
Anomaly	altitude deviation : excursion from assigned altitude conflict : airborne less severe non adherence : clearance other anomaly other
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	horizontal : 6000 vertical : 600
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	Pilot Deviation

Narrative:

A 300 to 400 ft climb was made due to a TCASII RA. The first officer was flying with the autoplt engaged, green altitude displayed on the apd at 16000 ft. The TCASII gave a TA. The first officer commenced a visual search. I used the traffic display and announced þtfc 1130 oþclock 5 1/2 mi, 1200 ft below us clbingþ and commenced a visual search. I visually acquired an aircraft, but made no maneuver. Next, the TCASII gave an RA. The first officer continued to clear the airspace visually and initiated a climb. Using the vsi, I confirmed a red arc from 0 to plus 2000 FPM with green above 2000 FPM. Noting that the TCASII presented a solid red aircraft at 1130 oþclock, 3 1/2 mi, 600 ft below us and climbing. I then assisted in clearing the airspace keeping the large transport (air carrier Y) aircraft in sight. Reporting the TCASII event to center, I confirmed my altitude assignment of 16000 ft and air carrier Y as 15000 ft. I also confirmed the altitude setting as 29.88 inches and air carrier Y confirmed that they also had 29.88 inches set. Air carrier Y stated that they were not TCASII equipped. I believe that air carrier Y overshot their assigned altitude. Supplemental information from acn 207063: level at assigned 16000 ft. Received TCASII RA requiring 300-400 ft climb. This was presumably set off by oncoming large transport flight by the TCASII. This aircraft came within 600 ft and approximately 3 1/2 mi. Guam center was advised of our maneuver.

Original NASA ASRS Text

Title: TCASII COMMANDED A CLB TO AVOID ANOTHER ACFT IN CTLED AIRSPACE.

Narrative: A 300 TO 400 FT CLB WAS MADE DUE TO A TCASII RA. THE FO WAS FLYING WITH THE AUTOPLT ENGAGED, GREEN ALT DISPLAYED ON THE APD AT 16000 FT. THE TCASII GAVE A TA. THE FO COMMENCED A VISUAL SEARCH. I USED THE TFC DISPLAY AND ANNOUNCED þTFC 1130 OþCLOCK 5 1/2 MI, 1200 FT BELOW US CLBINGþ AND COMMENCED A VISUAL SEARCH. I VISUALLY ACQUIRED AN ACFT, BUT MADE NO MANEUVER. NEXT, THE TCASII GAVE AN RA. THE FO CONTINUED TO CLR THE AIRSPACE VISUALLY AND INITIATED A CLB. USING THE VSI, I CONFIRMED A RED ARC FROM 0 TO PLUS 2000 FPM WITH GREEN ABOVE 2000 FPM. NOTING THAT THE TCASII PRESENTED A SOLID RED ACFT AT 1130 OþCLOCK, 3 1/2 MI, 600 FT BELOW US AND CLBING. I THEN ASSISTED IN CLRING THE AIRSPACE KEEPING THE LGT (ACR Y) ACFT IN SIGHT. RPTING THE TCASII EVENT TO CTR, I CONFIRMED MY ALT ASSIGNMENT OF 16000 FT AND ACR Y AS 15000 FT. I ALSO CONFIRMED THE ALT SETTING AS 29.88 INCHES AND ACR Y CONFIRMED THAT THEY ALSO HAD 29.88 INCHES SET. ACR Y STATED THAT THEY WERE NOT TCASII EQUIPPED. I BELIEVE THAT ACR Y OVERSHOT THEIR ASSIGNED ALT. SUPPLEMENTAL INFO FROM ACN 207063: LEVEL AT ASSIGNED 16000 FT. RECEIVED TCASII RA REQUIRING 300-400 FT CLB. THIS WAS PRESUMABLY SET OFF BY ONCOMING LGT FLT BY THE TCASII. THIS ACFT CAME WITHIN 600 FT AND APPROX 3 1/2 MI. GUAM CTR WAS ADVISED OF OUR MANEUVER.

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.