Excursion from taxiway in a night operation by air carrier medium large transport.

Attributes
ACN	206403
Time
Date	199204
Day	Fri
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : lax
State Reference	CA
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Controlling Facilities	tower : ory
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Navigation In Use	Other Other
Flight Phase	ground : holding ground other : taxi
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 200 flight time total : 16000
ASRS Report	206403
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : flight engineer pilot : atp
Experience	flight time last 90 days : 600 flight time total : 10000 flight time type : 800
ASRS Report	206503
Events
Anomaly	non adherence : clearance other anomaly other other spatial deviation
Independent Detector	other flight crewa
Resolutory Action	flight crew : exited adverse environment
Consequence	Other
Supplementary
Primary Problem	Airport
Air Traffic Incident	Pilot Deviation
Situations
Airport	other physical facility

Narrative:

First officer landed on runway 24R at lax. After slowing sufficiently I took control and cleared the runway at highspd turnoff #65. Expecting to hold short of runway 24L, I had slowed the aircraft to a near stop when the tower advised 'cross 24L and contact ground.' at this point I was nearly perpendicular to 24L, and the blue taxiway edge lights were visible across from my position. Not realizing that I had to make a right turn on 24L and then an immediate left to remain on taxiway 65, I crossed at a slight diagonal from my position on 65 and entered what I thought was the taxiway from between 2 blue edge lights. Only when I cleared the runway did I realize I was in the filleted area to the east of 65. Upon realizing that the hard surface I was on was not a taxiway, I made a right turn and reentered 65 a few ft to the west. I feel that this area is very poorly marked, and that, coupled with my lack of experience of runway exit at that particular intersection during hours of darkness contributed to my misunderstanding of the markings.

Original NASA ASRS Text

Title: EXCURSION FROM TAXIWAY IN A NIGHT OP BY ACR MLG.

Narrative: FO LANDED ON RWY 24R AT LAX. AFTER SLOWING SUFFICIENTLY I TOOK CTL AND CLRED THE RWY AT HIGHSPD TURNOFF #65. EXPECTING TO HOLD SHORT OF RWY 24L, I HAD SLOWED THE ACFT TO A NEAR STOP WHEN THE TWR ADVISED 'CROSS 24L AND CONTACT GND.' AT THIS POINT I WAS NEARLY PERPENDICULAR TO 24L, AND THE BLUE TAXIWAY EDGE LIGHTS WERE VISIBLE ACROSS FROM MY POS. NOT REALIZING THAT I HAD TO MAKE A R TURN ON 24L AND THEN AN IMMEDIATE L TO REMAIN ON TAXIWAY 65, I CROSSED AT A SLIGHT DIAGONAL FROM MY POS ON 65 AND ENTERED WHAT I THOUGHT WAS THE TAXIWAY FROM BTWN 2 BLUE EDGE LIGHTS. ONLY WHEN I CLRED THE RWY DID I REALIZE I WAS IN THE FILLETED AREA TO THE E OF 65. UPON REALIZING THAT THE HARD SURFACE I WAS ON WAS NOT A TAXIWAY, I MADE A R TURN AND REENTERED 65 A FEW FT TO THE W. I FEEL THAT THIS AREA IS VERY POORLY MARKED, AND THAT, COUPLED WITH MY LACK OF EXPERIENCE OF RWY EXIT AT THAT PARTICULAR INTXN DURING HRS OF DARKNESS CONTRIBUTED TO MY MISUNDERSTANDING OF THE MARKINGS.

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.