Narrative:

While being vectored for approach to runway 8 at phx; the controller assigned us a 170 degree heading and an altitude of 3000 ft. Upon approaching centerline to runway 8; we were flying perpendicular towards an aircraft on approach to runway 7L. After not receiving a clearance to turn and not being able to contact the controller because of radio congestion; we turned towards runway 8. After initiating the turn; we received a bank angle warning and an RA warning which we complied with. The flight was completed without incident. Supplemental information from acn 706161: we believe that the controller tried to issue this but may have been 'stepped on.' concerned about transgressing into the approachs to runway 7; we initiated a turn to final for runway 8 without a clearance to do so. Shortly after this we received a TCAS RA on an aircraft on approach to runway 7. After complying with the RA we corrected back on course for a normal approach and landing on runway 8.

Google
 

Original NASA ASRS Text

Title: A B737-800 TOOK EVASIVE ACTION AFTER RECEIVING AN RA ON APCH TO PHX WHEN THEY FLEW THROUGH FINAL APCH COURSE PROBABLY BECAUSE THEIR CLRNC TURNING THEM TO FINAL WAS COVERED BY ANOTHER ACFT.

Narrative: WHILE BEING VECTORED FOR APCH TO RWY 8 AT PHX; THE CTLR ASSIGNED US A 170 DEG HDG AND AN ALT OF 3000 FT. UPON APCHING CTRLINE TO RWY 8; WE WERE FLYING PERPENDICULAR TOWARDS AN ACFT ON APCH TO RWY 7L. AFTER NOT RECEIVING A CLRNC TO TURN AND NOT BEING ABLE TO CONTACT THE CTLR BECAUSE OF RADIO CONGESTION; WE TURNED TOWARDS RWY 8. AFTER INITIATING THE TURN; WE RECEIVED A BANK ANGLE WARNING AND AN RA WARNING WHICH WE COMPLIED WITH. THE FLT WAS COMPLETED WITHOUT INCIDENT. SUPPLEMENTAL INFO FROM ACN 706161: WE BELIEVE THAT THE CTLR TRIED TO ISSUE THIS BUT MAY HAVE BEEN 'STEPPED ON.' CONCERNED ABOUT TRANSGRESSING INTO THE APCHS TO RWY 7; WE INITIATED A TURN TO FINAL FOR RWY 8 WITHOUT A CLRNC TO DO SO. SHORTLY AFTER THIS WE RECEIVED A TCAS RA ON AN ACFT ON APCH TO RWY 7. AFTER COMPLYING WITH THE RA WE CORRECTED BACK ON COURSE FOR A NORMAL APCH AND LNDG ON RWY 8.

Data retrieved from NASA's ASRS site as of January 2009 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.