Air carrier medium large transport track heading deviation on STAR into phx.

Attributes
ACN	199761
Time
Date	199201
Day	Tue
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : pxr airport : phx
State Reference	AZ
Altitude	msl bound lower : 23000 msl bound upper : 23000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zab
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Flight Phase	descent other
Route In Use	arrival star : star
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Experience	flight time last 90 days : 200 flight time total : 6000
ASRS Report	199761
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp pilot : flight engineer pilot : instrument pilot : commercial pilot : cfi
Experience	flight time last 90 days : 220 flight time total : 13000
ASRS Report	199756
Events
Anomaly	non adherence : published procedure non adherence : clearance other spatial deviation
Independent Detector	other controllera
Resolutory Action	other
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

While flying karlo 4 arrival to phx from las (bld KARLO4, jan/92) intercepted 310 degree radial from phx instead of 310 radial from iwa. Abq center detected error and inquired about the phx versus iwa station/radial. Captain was flying aircraft but both pilots misread arrival and selected phx versus iwa. We asked abq center if others had problems with arrival radials, the answer was 'a whole bunch'. Upon further inspection, the problem arose because of 2 events: 1) the old karlo arrival was totally referenced from the srp VOR with no use of the iwa involved. 2) the depiction of the new karlo shows the 130 degree radial reference displayed 2 inches away form the iwa station reference (see highlighted areas on enclosed plate). The narrative of the bld KARLO4 is accurate but the depiction is easily confused. Especially since the old arrival was flown with exclusive reference to srp. Recommendation: when a new arrival changes the primary navigation reference, the 'changes' section at the bottom of the plate should so state (see highlighted area with new comments).

Original NASA ASRS Text

Title: ACR MLG TRACK HDG DEV ON STAR INTO PHX.

Narrative: WHILE FLYING KARLO 4 ARR TO PHX FROM LAS (BLD KARLO4, JAN/92) INTERCEPTED 310 DEG RADIAL FROM PHX INSTEAD OF 310 RADIAL FROM IWA. ABQ CTR DETECTED ERROR AND INQUIRED ABOUT THE PHX VERSUS IWA STATION/RADIAL. CAPT WAS FLYING ACFT BUT BOTH PLTS MISREAD ARR AND SELECTED PHX VERSUS IWA. WE ASKED ABQ CTR IF OTHERS HAD PROBLEMS WITH ARR RADIALS, THE ANSWER WAS 'A WHOLE BUNCH'. UPON FURTHER INSPECTION, THE PROBLEM AROSE BECAUSE OF 2 EVENTS: 1) THE OLD KARLO ARR WAS TOTALLY REFED FROM THE SRP VOR WITH NO USE OF THE IWA INVOLVED. 2) THE DEPICTION OF THE NEW KARLO SHOWS THE 130 DEG RADIAL REF DISPLAYED 2 INCHES AWAY FORM THE IWA STATION REF (SEE HIGHLIGHTED AREAS ON ENCLOSED PLATE). THE NARRATIVE OF THE BLD KARLO4 IS ACCURATE BUT THE DEPICTION IS EASILY CONFUSED. ESPECIALLY SINCE THE OLD ARR WAS FLOWN WITH EXCLUSIVE REF TO SRP. RECOMMENDATION: WHEN A NEW ARR CHANGES THE PRIMARY NAV REF, THE 'CHANGES' SECTION AT THE BOTTOM OF THE PLATE SHOULD SO STATE (SEE HIGHLIGHTED AREA WITH NEW COMMENTS).

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.