<< >> NASA ASRS Report 97082, October 1988

Air carrier-medium large transport overshot turn to final causing less than standard separation with mdt on approach to parallel runways.

Attributes
ACN	97082
Time
Date	198810
Day	Sat
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : lax
State Reference	CA
Altitude	msl bound lower : 1500 msl bound upper : 1500
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : lax
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Navigation In Use	Other
Flight Phase	descent : approach
Route In Use	approach : visual
Flight Plan	IFR
Aircraft 2
Operator	general aviation : corporate
Make Model Name	Medium Transport, Low Wing, 2 Turbojet Eng
Flight Phase	descent : approach
Route In Use	approach : straight in
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp pilot : cfi
Experience	flight time last 90 days : 120 flight time total : 6000 flight time type : 1200
ASRS Report	92708
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	non adherence : clearance non adherence : required legal separation other spatial deviation
Independent Detector	other controllera other flight crewa
Resolutory Action	flight crew : returned to intended course or assigned course
Consequence	Other
Miss Distance	horizontal : 500 vertical : 500
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Aircraft was cleared for stadium visual approach to runway 24R at lax. Both pilots had ILS and LOM tuned, but were searching ground for visual check/turn points on stadium approach. Aircraft passed through the final approach course for runway 24R and approached the final for runway 25R. An mdt was on final for runway 25R or left. The PIC saw the mdt and realized the problem, executing a turn back toward runway 24R final approach course. At the same time lax tower called the overshoot and verified that we did have the mdt visually. Contributing factors: frequency congestion and confusion caused by only having south tower frequency in operation. Copilot initial frequency selection was for north tower--once on correct frequency, tower controller was continually issuing instructions to other aircraft until overshoot was called. Reduced visibility--when overshoot was first noted by vicinity of mdt and then a xchk to the ILS, only the left runways were visible.

Related reports:

• Air carrier-medium large transport overshot crossing restric...

	Enter your search terms Submit search form
	Web www.37000feet.com

Original NASA ASRS Text

Title: ACR-MLG OVERSHOT TURN TO FINAL CAUSING LESS THAN STANDARD SEPARATION WITH MDT ON APCH TO PARALLEL RWYS.

Narrative: ACFT WAS CLRED FOR STADIUM VISUAL APCH TO RWY 24R AT LAX. BOTH PLTS HAD ILS AND LOM TUNED, BUT WERE SEARCHING GND FOR VISUAL CHK/TURN POINTS ON STADIUM APCH. ACFT PASSED THROUGH THE FINAL APCH COURSE FOR RWY 24R AND APCHED THE FINAL FOR RWY 25R. AN MDT WAS ON FINAL FOR RWY 25R OR L. THE PIC SAW THE MDT AND REALIZED THE PROB, EXECUTING A TURN BACK TOWARD RWY 24R FINAL APCH COURSE. AT THE SAME TIME LAX TWR CALLED THE OVERSHOOT AND VERIFIED THAT WE DID HAVE THE MDT VISUALLY. CONTRIBUTING FACTORS: FREQ CONGESTION AND CONFUSION CAUSED BY ONLY HAVING S TWR FREQ IN OPERATION. COPLT INITIAL FREQ SELECTION WAS FOR N TWR--ONCE ON CORRECT FREQ, TWR CTLR WAS CONTINUALLY ISSUING INSTRUCTIONS TO OTHER ACFT UNTIL OVERSHOOT WAS CALLED. REDUCED VISIBILITY--WHEN OVERSHOOT WAS FIRST NOTED BY VICINITY OF MDT AND THEN A XCHK TO THE ILS, ONLY THE LEFT RWYS WERE VISIBLE.

Data retrieved from NASA's ASRS site as of August 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.