Apparent needless TCASII RA on opposite direction traffic in cruise regime with standard separation ...

Attributes
ACN	262280
Time
Date	199402
Day	Tue
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : iow
State Reference	IA
Altitude	msl bound lower : 28000 msl bound upper : 29300
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zau artcc : ztl
Operator	common carrier : air carrier
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Operating Under FAR Part	Part 121
Navigation In Use	Other Other
Flight Phase	cruise other
Flight Plan	IFR
Aircraft 2
Operator	common carrier : air carrier
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Operating Under FAR Part	other : unknown
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 : 210 flight time total : 9000 flight time type : 2500
ASRS Report	262280
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Events
Anomaly	aircraft equipment problem : less severe altitude deviation : excursion from assigned altitude non adherence : clearance other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : unspecified
Resolutory Action	flight crew : took evasive action
Consequence	Other
Miss Distance	horizontal : 10000 vertical : 1500
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	Pilot Deviation

Narrative:

In response to a TCASII RA, while in cruise at FL280, first officer disconnected autoplt and began a climb in response to TCASII instructions. Vsi commanded a 2500 FPM climb. By the time of the aural 'clear of conflict.' we had reached an altitude of 28600 ft and with the established rate of climb, we were able to complete a level off by 29300 ft. The only visual contact with the traffic was its contrail, after level off. ZAU was advised of deviation and we were reclred to FL280.

Original NASA ASRS Text

Title: APPARENT NEEDLESS TCASII RA ON OPPOSITE DIRECTION TFC IN CRUISE REGIME WITH STANDARD SEPARATION ALLOWED.

Narrative: IN RESPONSE TO A TCASII RA, WHILE IN CRUISE AT FL280, FO DISCONNECTED AUTOPLT AND BEGAN A CLB IN RESPONSE TO TCASII INSTRUCTIONS. VSI COMMANDED A 2500 FPM CLB. BY THE TIME OF THE AURAL 'CLR OF CONFLICT.' WE HAD REACHED AN ALT OF 28600 FT AND WITH THE ESTABLISHED RATE OF CLB, WE WERE ABLE TO COMPLETE A LEVEL OFF BY 29300 FT. THE ONLY VISUAL CONTACT WITH THE TFC WAS ITS CONTRAIL, AFTER LEVEL OFF. ZAU WAS ADVISED OF DEV AND WE WERE RECLRED TO FL280.

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.

Apparent needless TCASII RA on opposite direction traffic in cruise regime with standard separation allowed.