The flight crew both thought they were cleared for the visual approach and read back that they were cleared for the visual. When they commenced the approach the controller corrected them back and vectored them for an ILS.

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Attributes
ACN	348309
Time
Date	199609
Day	Wed
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : lax
State Reference	CA
Altitude	msl bound lower : 2500 msl bound upper : 2500
Environment
Flight Conditions	Marginal
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : lax artcc : zse
Operator	common carrier : air carrier
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 121
Navigation In Use	Other Other
Flight Phase	descent : approach
Route In Use	approach : visual
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : instrument pilot : commercial pilot : atp
Experience	flight time last 90 days : 100 flight time total : 12500 flight time type : 300
ASRS Report	348309
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : commercial pilot : cfi pilot : atp
Experience	flight time last 90 days : 240 flight time total : 13000 flight time type : 3600
ASRS Report	348301
Events
Anomaly	non adherence : clearance non adherence : far other anomaly other other spatial deviation
Independent Detector	other controllera
Resolutory Action	controller : issued new clearance other
Consequence	Other
Supplementary
Air Traffic Incident	other

Narrative:

Arrival and approachs were changed several times within a 15-20 min time frame at the airport. 1) civet arrival to sadde arrival. 2) runway 25L to runway 24R to stadium visual approach to ILS runway 24R. On sadde 6 arrival, were told to depart smo VOR on 070 degree heading. On the 070 degree heading we believe we were issued the stadium visual and read this clearance back to ATC. Over the stadium we turned to follow the freeway and during the turn were reissued the 070 degree heading, then further left to 040 degrees. ATC said we were to expect the visual approach but not cleared for it. The WX was marginal for this approach as there was a scattered cloud layer at 2700 ft as well as generally hazy conditions. We were then vectored for the ILS runway 24R approach. It seems to be a misunderstanding between all concerned as to if we were cleared for the visual or not. No TCASII alerts or warnings were encountered.

Original NASA ASRS Text

Title: THE FLC BOTH THOUGHT THEY WERE CLRED FOR THE VISUAL APCH AND READ BACK THAT THEY WERE CLRED FOR THE VISUAL. WHEN THEY COMMENCED THE APCH THE CTLR CORRECTED THEM BACK AND VECTORED THEM FOR AN ILS.

Narrative: ARR AND APCHS WERE CHANGED SEVERAL TIMES WITHIN A 15-20 MIN TIME FRAME AT THE ARPT. 1) CIVET ARR TO SADDE ARR. 2) RWY 25L TO RWY 24R TO STADIUM VISUAL APCH TO ILS RWY 24R. ON SADDE 6 ARR, WERE TOLD TO DEPART SMO VOR ON 070 DEG HDG. ON THE 070 DEG HDG WE BELIEVE WE WERE ISSUED THE STADIUM VISUAL AND READ THIS CLRNC BACK TO ATC. OVER THE STADIUM WE TURNED TO FOLLOW THE FREEWAY AND DURING THE TURN WERE REISSUED THE 070 DEG HDG, THEN FURTHER L TO 040 DEGS. ATC SAID WE WERE TO EXPECT THE VISUAL APCH BUT NOT CLRED FOR IT. THE WX WAS MARGINAL FOR THIS APCH AS THERE WAS A SCATTERED CLOUD LAYER AT 2700 FT AS WELL AS GENERALLY HAZY CONDITIONS. WE WERE THEN VECTORED FOR THE ILS RWY 24R APCH. IT SEEMS TO BE A MISUNDERSTANDING BTWN ALL CONCERNED AS TO IF WE WERE CLRED FOR THE VISUAL OR NOT. NO TCASII ALERTS OR WARNINGS WERE ENCOUNTERED.

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.