A jet on short final to pdk runway 2R from a left down wind had a near miss with an unseen aircraft ...

Attributes
ACN	984350
Time
Date	201112
Local Time Of Day	0601-1200
Place
Locale Reference	PDK.Tower
State Reference	GA
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	Light Transport Low Wing 2 Turbojet Eng
Operating Under FAR Part	Part 91
Flight Phase	Landing
Route In Use	Visual Approach
Flight Plan	IFR
Person 1
Function	First Officer Pilot Flying
Qualification	Flight Crew Air Transport Pilot (ATP)
Events
Anomaly	ATC Issue All Types Conflict NMAC Deviation - Procedural Clearance Deviation - Track / Heading All Types
Miss Distance	Vertical 200

Narrative:

We were on a left downwind for runway 2R and were informed by the tower that an aircraft was on right base for 2L. We didn't see the aircraft and asked tower if we should start our base turn for 2R. Tower replied for us to start the base turn. On short final we noticed on the TCAS that it appeared that we were extremely close to the landing traffic on 2L. The captain told me to go around and a second later we received an RA to climb. We complied with the RA and entered right downwind and landed. We queried the tower about the landing traffic on 2L that gave us an RA; and she replied that she never told us to turn our base leg. The captain replied 'yes you did.' the tower answered back the other aircraft had us in sight. I find that hard to believe because when we received the RA; we were 100 to 200 ft above the other aircraft. Aircraft landing on the left side use left traffic pattern. Aircraft using the right side use right traffic pattern.

Original NASA ASRS Text

Title: A jet on short final to PDK Runway 2R from a left down wind had a near miss with an unseen aircraft on Runway 2L short final from a right down wind. The jet crew executed a go around during a TCAS RA warning.

Narrative: We were on a left downwind for Runway 2R and were informed by the Tower that an aircraft was on right base for 2L. We didn't see the aircraft and asked Tower if we should start our base turn for 2R. Tower replied for us to start the base turn. On short final we noticed on the TCAS that it appeared that we were extremely close to the landing traffic on 2L. The Captain told me to go around and a second later we received an RA to climb. We complied with the RA and entered right downwind and landed. We queried the Tower about the landing traffic on 2L that gave us an RA; and she replied that she never told us to turn our base leg. The Captain replied 'yes you did.' The Tower answered back the other aircraft had us in sight. I find that hard to believe because when we received the RA; we were 100 to 200 FT above the other aircraft. Aircraft landing on the left side use left traffic pattern. Aircraft using the right side use right traffic pattern.

Data retrieved from NASA's ASRS site as of April 2012 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.

A jet on short final to pdk runway 2R from a left down wind had a near miss with an unseen aircraft on runway 2L short final from a right down wind. The jet crew executed a go around during a TCAS RA warning.