A320 crew had an near midair collision with a PA31 when departing runway 7L at phx.

Attributes
ACN	547992
Time
Date	200205
Day	Mon
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : zzz.airport
State Reference	US
Altitude	agl single value : 500
Environment
Light	Daylight
Aircraft 1
Controlling Facilities	tower : zzz.tower
Operator	common carrier : air carrier
Make Model Name	A320
Operating Under FAR Part	Part 121
Navigation In Use	other
Flight Phase	climbout : takeoff
Flight Plan	IFR
Aircraft 2
Controlling Facilities	tower : zzz.tower
Make Model Name	PA-31 Navajo Chieftan/Mojave/Navajo T1020
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
ASRS Report	547992
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
ASRS Report	548020
Events
Anomaly	conflict : nmac non adherence : published procedure non adherence : far other anomaly other
Independent Detector	aircraft equipment : tcas other flight crewa other flight crewb
Resolutory Action	flight crew : took evasive action other
Consequence	faa : reviewed incident with flight crew other
Miss Distance	horizontal : 0 vertical : 100
Supplementary
Problem Areas	Flight Crew Human Performance ATC Human Performance Airport
Primary Problem	Ambiguous

Narrative:

On takeoff from phx we received a climb TA/RA. I was the PF and executed the climb maneuver. About 5 seconds later we get a call from tower, letting us know about a navajo aircraft that would pass from our right to left. The first officer spotted the airplane and said it was 100 ft to the left and low, eventually passing directly underneath our aircraft. We went to departure frequency and continued. With a short turn time, we waited to call tower upon reaching destination. We let the tower personnel know of the incident. The person refused to give us their name but would look into the incident. 'Near miss' due to miscom from the tower. Supplemental information from acn 548020: right after takeoff on runway 4L at 500 ft AGL we got a climbing RA for traffic that appeared to be right underneath us. The target read -01. It was so close to us that I guessed it was under us. After the RA tower then told us about him as we climbed following the TCASII instructions. A rather uncomfortable situation.

Original NASA ASRS Text

Title: A320 CREW HAD AN NMAC WITH A PA31 WHEN DEPARTING RWY 7L AT PHX.

Narrative: ON TKOF FROM PHX WE RECEIVED A CLB TA/RA. I WAS THE PF AND EXECUTED THE CLB MANEUVER. ABOUT 5 SECONDS LATER WE GET A CALL FROM TWR, LETTING US KNOW ABOUT A NAVAJO ACFT THAT WOULD PASS FROM OUR R TO L. THE FO SPOTTED THE AIRPLANE AND SAID IT WAS 100 FT TO THE L AND LOW, EVENTUALLY PASSING DIRECTLY UNDERNEATH OUR ACFT. WE WENT TO DEP FREQ AND CONTINUED. WITH A SHORT TURN TIME, WE WAITED TO CALL TWR UPON REACHING DEST. WE LET THE TWR PERSONNEL KNOW OF THE INCIDENT. THE PERSON REFUSED TO GIVE US THEIR NAME BUT WOULD LOOK INTO THE INCIDENT. 'NEAR MISS' DUE TO MISCOM FROM THE TWR. SUPPLEMENTAL INFO FROM ACN 548020: RIGHT AFTER TKOF ON RWY 4L AT 500 FT AGL WE GOT A CLBING RA FOR TFC THAT APPEARED TO BE RIGHT UNDERNEATH US. THE TARGET READ -01. IT WAS SO CLOSE TO US THAT I GUESSED IT WAS UNDER US. AFTER THE RA TWR THEN TOLD US ABOUT HIM AS WE CLBED FOLLOWING THE TCASII INSTRUCTIONS. A RATHER UNCOMFORTABLE SIT.

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.