Air carrier X TCASII TA RA evasive action climb from aircraft Y.

Attributes
ACN	209447
Time
Date	199205
Day	Thu
Local Time Of Day	1801 To 2400
Place
Locale Reference	atc facility : gij
State Reference	IN
Altitude	msl bound lower : 9000 msl bound upper : 9700
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zbw
Operator	common carrier : air carrier
Make Model Name	Medium Transport, Low Wing, 2 Turboprop Eng
Navigation In Use	Other
Flight Phase	cruise other
Route In Use	enroute : direct enroute airway : zau
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 : 14500 flight time type : 700
ASRS Report	209447
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Experience	flight time last 90 days : 200 flight time total : 6000 flight time type : 1000
ASRS Report	209457
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 : took evasive action
Consequence	Other
Miss Distance	horizontal : 6000 vertical : 400
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

TCASII TA then RA followed by TCASII responses: climb, monitor vertical speed, clear of conflict. (Evasive action). En route chicago to ft wayne, cockpit workload was minimal at 9000 cruise. Air carrier pilot in jumpseat also did not see the aircraft Y. ATC controller was severely busy. ATC did not advise us of the conflict, nor were we able to advise ATC of our traffic resolution due to frequency congestion. Never saw the traffic -- WX severe clear. Our deviation of altitude was from assigned altitude of 9000 ft up to 9700 ft and return to 9000 clear of conflict.

Original NASA ASRS Text

Title: ACR X TCASII TA RA EVASIVE ACTION CLB FROM ACFT Y.

Narrative: TCASII TA THEN RA FOLLOWED BY TCASII RESPONSES: CLB, MONITOR VERT SPD, CLR OF CONFLICT. (EVASIVE ACTION). ENRTE CHICAGO TO FT WAYNE, COCKPIT WORKLOAD WAS MINIMAL AT 9000 CRUISE. ACR PLT IN JUMPSEAT ALSO DID NOT SEE THE ACFT Y. ATC CTLR WAS SEVERELY BUSY. ATC DID NOT ADVISE US OF THE CONFLICT, NOR WERE WE ABLE TO ADVISE ATC OF OUR TFC RESOLUTION DUE TO FREQ CONGESTION. NEVER SAW THE TFC -- WX SEVERE CLR. OUR DEV OF ALT WAS FROM ASSIGNED ALT OF 9000 FT UP TO 9700 FT AND RETURN TO 9000 CLR OF CONFLICT.

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.