Light transport sights traffic and takes action as TCASII RA sounds.

Attributes
ACN	265056
Time
Date	199402
Day	Sat
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : lib
State Reference	NC
Altitude	msl bound lower : 5000 msl bound upper : 6000
Aircraft 1
Controlling Facilities	tracon : gso tracon : cae
Operator	common carrier : air carrier
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	other : unknown
Flight Phase	cruise other
Flight Plan	IFR
Aircraft 2
Make Model Name	Cessna Single Piston Undifferentiated or Other Model
Operating Under FAR Part	Part 91
Flight Phase	cruise other
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 170 flight time total : 3500 flight time type : 200
ASRS Report	265056
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : commercial
Events
Anomaly	conflict : nmac non adherence : far other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : unspecified other flight crewa
Resolutory Action	flight crew : took evasive action
Consequence	faa : reviewed incident with flight crew
Miss Distance	horizontal : 0 vertical : 250
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation Inter Facility Coordination Failure

Narrative:

En route from rdu to clt we were on the 'magic 7 arrival' into clt. We were talking to gso approach level at 6000 ft when I noticed a high wing cessna at our altitude coming right at us from our 1 O'clock position. At the same time I took action to descend, our TCASII alert went off, telling us to descend and showed his altitude as the same as ours. It also directed us to descend which we were doing. We descended to 5000 ft and told gso approach of the incident. They later said that we were still in rdu's airspace and never saw the other aircraft on his radar. Apparently the cessna did have a transponder but didn't have it on until he was within 1 mi of us, because our TCASII didn't show him or give us a warning until it was within 1 mi of us.

Original NASA ASRS Text

Title: LTT SIGHTS TFC AND TAKES ACTION AS TCASII RA SOUNDS.

Narrative: ENRTE FROM RDU TO CLT WE WERE ON THE 'MAGIC 7 ARR' INTO CLT. WE WERE TALKING TO GSO APCH LEVEL AT 6000 FT WHEN I NOTICED A HIGH WING CESSNA AT OUR ALT COMING RIGHT AT US FROM OUR 1 O'CLOCK POS. AT THE SAME TIME I TOOK ACTION TO DSND, OUR TCASII ALERT WENT OFF, TELLING US TO DSND AND SHOWED HIS ALT AS THE SAME AS OURS. IT ALSO DIRECTED US TO DSND WHICH WE WERE DOING. WE DSNDED TO 5000 FT AND TOLD GSO APCH OF THE INCIDENT. THEY LATER SAID THAT WE WERE STILL IN RDU'S AIRSPACE AND NEVER SAW THE OTHER ACFT ON HIS RADAR. APPARENTLY THE CESSNA DID HAVE A XPONDER BUT DIDN'T HAVE IT ON UNTIL HE WAS WITHIN 1 MI OF US, BECAUSE OUR TCASII DIDN'T SHOW HIM OR GIVE US A WARNING UNTIL IT WAS WITHIN 1 MI OF US.

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.