Turning base runway 31, near midair collision with unidented aircraft.

Attributes
ACN	259307
Time
Date	199312
Day	Tue
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : crp
State Reference	TX
Altitude	msl bound lower : 1800 msl bound upper : 2000
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Controlling Facilities	tower : crp
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Flight Phase	cruise other descent : approach
Flight Plan	IFR
Aircraft 2
Make Model Name	Small Aircraft
Flight Phase	cruise other
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Experience	flight time last 90 days : 180 flight time total : 7200 flight time type : 4200
ASRS Report	259307
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	conflict : nmac other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : unspecified other flight crewa
Resolutory Action	flight crew : took evasive action
Consequence	Other
Miss Distance	vertical : 100
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

ATIS reported runway 31 visual approach. We received vectors for a left downwind to runway 31 visual. Prior to entering downwind we were offered a visual to runway 13. The captain declined runway 13 because he felt we were too close to the airport. I (first officer flying) verbally, to captain, indicated I would accept runway 13 visual but agreed with the captain's decision. We were then cleared for the left downwind visual approach to runway 31. I crossed abeam the approach end of runway 31 at 2000 ft MSL and extended approximately 3.5 mi to make the left turn for conflicting traffic. The captain took the airplane and we immediately received a TCASII RA for the target aircraft indicating 100 ft below us. The captain (flying) followed TCASII advisory and climbed as aircraft passed below us. We continued and landed uneventfully on runway 31. Contributing events: 1) night. 2) localizer set up for runway 13 when we were given vectors for runway 31. 3) tower no help with traffic after TCASII maneuver. Tower very irritated that we were verifying clearance to land runway 31 after the near miss. 4) conflicting aircraft unauthorized in air traffic area.

Original NASA ASRS Text

Title: TURNING BASE RWY 31, NMAC WITH UNIDENTED ACFT.

Narrative: ATIS RPTED RWY 31 VISUAL APCH. WE RECEIVED VECTORS FOR A L DOWNWIND TO RWY 31 VISUAL. PRIOR TO ENTERING DOWNWIND WE WERE OFFERED A VISUAL TO RWY 13. THE CAPT DECLINED RWY 13 BECAUSE HE FELT WE WERE TOO CLOSE TO THE ARPT. I (FO FLYING) VERBALLY, TO CAPT, INDICATED I WOULD ACCEPT RWY 13 VISUAL BUT AGREED WITH THE CAPT'S DECISION. WE WERE THEN CLRED FOR THE L DOWNWIND VISUAL APCH TO RWY 31. I CROSSED ABEAM THE APCH END OF RWY 31 AT 2000 FT MSL AND EXTENDED APPROX 3.5 MI TO MAKE THE L TURN FOR CONFLICTING TFC. THE CAPT TOOK THE AIRPLANE AND WE IMMEDIATELY RECEIVED A TCASII RA FOR THE TARGET ACFT INDICATING 100 FT BELOW US. THE CAPT (FLYING) FOLLOWED TCASII ADVISORY AND CLBED AS ACFT PASSED BELOW US. WE CONTINUED AND LANDED UNEVENTFULLY ON RWY 31. CONTRIBUTING EVENTS: 1) NIGHT. 2) LOC SET UP FOR RWY 13 WHEN WE WERE GIVEN VECTORS FOR RWY 31. 3) TWR NO HELP WITH TFC AFTER TCASII MANEUVER. TWR VERY IRRITATED THAT WE WERE VERIFYING CLRNC TO LAND RWY 31 AFTER THE NEAR MISS. 4) CONFLICTING ACFT UNAUTH IN ATA.

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.