Close proximity commuter-light transport air carrier-medium large transport.

Attributes
ACN	100083
Time
Date	198812
Day	Wed
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : rdu
State Reference	NC
Altitude	msl bound lower : 2000 msl bound upper : 2000
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Controlling Facilities	tracon : rdu
Operator	common carrier : air carrier
Make Model Name	Light Transport, High Wing, 2 Turboprop Eng
Flight Phase	other
Route In Use	approach : visual
Flight Plan	IFR
Aircraft 2
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Flight Phase	descent other other
Route In Use	approach : visual
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 250 flight time total : 5500 flight time type : 3000
ASRS Report	100083
Person 2
Affiliation	government : faa
Function	controller : approach
Qualification	controller : radar
Events
Anomaly	conflict : airborne less severe
Independent Detector	other flight crewa
Resolutory Action	flight crew : took evasive action
Consequence	faa : reviewed incident with flight crew
Miss Distance	horizontal : 900 vertical : 900
Supplementary
Primary Problem	ATC Human Performance
Air Traffic Incident	Operational Error other

Narrative:

Upon entering rdu airspace, flying an light transport on a scheduled passenger flight. We were assigned runway 23R by the initial controller. Final controller changed runway assignment to 23L, which meant we would have to cross runway 23R traffic to land on 23L. Controller then called traffic at 12 O'clock to follow for a visual approach to 23L (passenger large transport). At the same time traffic at 10 O'clock position on different controller and for runway 23R (an air carrier Y passenger jet) was converging on collision course. We asked about that traffic and obtained no response until after we made rapid descent to avoid traffic. Continued to uneventful landing. Upon speaking to approach supervisor he stated that the heavy traffic load and the fact that the controller changed runways were the contributing factors to this incident.

Original NASA ASRS Text

Title: CLOSE PROX COMMUTER-LTT ACR-MLG.

Narrative: UPON ENTERING RDU AIRSPACE, FLYING AN LTT ON A SCHEDULED PAX FLT. WE WERE ASSIGNED RWY 23R BY THE INITIAL CTLR. FINAL CTLR CHANGED RWY ASSIGNMENT TO 23L, WHICH MEANT WE WOULD HAVE TO CROSS RWY 23R TFC TO LAND ON 23L. CTLR THEN CALLED TFC AT 12 O'CLOCK TO FOLLOW FOR A VISUAL APCH TO 23L (PAX LGT). AT THE SAME TIME TFC AT 10 O'CLOCK POS ON DIFFERENT CTLR AND FOR RWY 23R (AN ACR Y PAX JET) WAS CONVERGING ON COLLISION COURSE. WE ASKED ABOUT THAT TFC AND OBTAINED NO RESPONSE UNTIL AFTER WE MADE RAPID DSCNT TO AVOID TFC. CONTINUED TO UNEVENTFUL LNDG. UPON SPEAKING TO APCH SUPVR HE STATED THAT THE HEAVY TFC LOAD AND THE FACT THAT THE CTLR CHANGED RWYS WERE THE CONTRIBUTING FACTORS TO THIS INCIDENT.

Data retrieved from NASA's ASRS site as of August 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.