A controller at phx reports a PA31 pilot's failure to align with the assigned runway during approach in VMC. An A320 had just been cleared onto the runway, and the aircraft overflew the A320 when the controller intervened.

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Attributes
ACN	341012
Time
Date	199607
Day	Thu
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : phx
State Reference	AZ
Altitude	agl bound lower : 0 agl bound upper : 500
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : phx
Operator	common carrier : air taxi
Make Model Name	PA-31 Navajo Chieftan/Mojave/Navajo T1020
Operating Under FAR Part	Part 135
Flight Phase	landing other
Route In Use	approach : visual
Flight Plan	VFR
Aircraft 2
Operator	common carrier : air carrier
Make Model Name	A320
Operating Under FAR Part	Part 121
Navigation In Use	Other Other
Flight Phase	ground other : taxi
Flight Plan	IFR
Person 1
Affiliation	government : faa
Function	controller : local
Qualification	controller : radar
Experience	controller radar : 8
ASRS Report	341012
Person 2
Affiliation	company : air taxi
Function	flight crew : single pilot
Qualification	pilot : commercial pilot : instrument
Events
Anomaly	conflict : nmac non adherence : far non adherence : clearance
Independent Detector	other controllera
Resolutory Action	controller : issued new clearance flight crew : took evasive action other
Consequence	Other
Miss Distance	horizontal : 200 vertical : 0
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation
Situations
Airport	procedure or policy : unspecified

Narrative:

The PA31 was cleared to land runway 26L via right base. An A320 was just starting to take runway 26R for departure. The PA31, while on close in base, abruptly turned final for runway 26R and overflew the A320 when the controller told them to immediately turn left and climb. One of many examples of light aircraft incorrectly replying to instructions at sky harbor and causing an unsafe situation.

Original NASA ASRS Text

Title: A CTLR AT PHX RPTS A PA31 PLT'S FAILURE TO ALIGN WITH THE ASSIGNED RWY DURING APCH IN VMC. AN A320 HAD JUST BEEN CLRED ONTO THE RWY, AND THE ACFT OVERFLEW THE A320 WHEN THE CTLR INTERVENED.

Narrative: THE PA31 WAS CLRED TO LAND RWY 26L VIA R BASE. AN A320 WAS JUST STARTING TO TAKE RWY 26R FOR DEP. THE PA31, WHILE ON CLOSE IN BASE, ABRUPTLY TURNED FINAL FOR RWY 26R AND OVERFLEW THE A320 WHEN THE CTLR TOLD THEM TO IMMEDIATELY TURN L AND CLB. ONE OF MANY EXAMPLES OF LIGHT ACFT INCORRECTLY REPLYING TO INSTRUCTIONS AT SKY HARBOR AND CAUSING AN UNSAFE 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.