B777 crew descended on the GS. This caused a descent 180 ft below the tunnel arrival altitude.

Attributes
ACN	412590
Time
Date	199808
Day	Wed
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : lax
State Reference	CA
Altitude	msl bound lower : 7820 msl bound upper : 8000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : lax
Operator	common carrier : air carrier
Make Model Name	B777 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Navigation In Use	Other Other
Flight Phase	descent : approach
Route In Use	approach : visual arrival other arrival star : star
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp pilot : commercial pilot : instrument
Experience	flight time last 90 days : 200 flight time total : 5400 flight time type : 1400
ASRS Report	412590
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	altitude deviation : overshoot non adherence : published procedure
Independent Detector	other flight crewa
Resolutory Action	flight crew : returned to intended course or assigned course
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

I was the PF on air carrier XXX on aug/xa/98 from lhr to lax. I had discussed the approach to runway 25L with the relief pilot and was aware of the 'trap' entailed. The WX was VFR and I was cleared for the ILS runway 25L from fuelr intersection. As per my company training and SOP, I selected the approach mode at fuelr -- ergo I was 180 ft low at gaate intersection as reported by the relief pilot. I disconnected the autoplt and flew the rest of the approach manually. I was aware of the pitfalls on this approach but after 12 hours in the cockpit I reverted to my training. No excuse -- I screwed up. However, if lax departure can remind me 3 or 4 times to 'continue the loope restrs' why can't they clear me for the ILS runway 25L approach from fuelr comply with ILS runway 25L restrs? It may jog my feeble memory, especially after a long international flight.

Original NASA ASRS Text

Title: B777 CREW DSNDED ON THE GS. THIS CAUSED A DSCNT 180 FT BELOW THE TUNNEL ARR ALT.

Narrative: I WAS THE PF ON ACR XXX ON AUG/XA/98 FROM LHR TO LAX. I HAD DISCUSSED THE APCH TO RWY 25L WITH THE RELIEF PLT AND WAS AWARE OF THE 'TRAP' ENTAILED. THE WX WAS VFR AND I WAS CLRED FOR THE ILS RWY 25L FROM FUELR INTXN. AS PER MY COMPANY TRAINING AND SOP, I SELECTED THE APCH MODE AT FUELR -- ERGO I WAS 180 FT LOW AT GAATE INTXN AS RPTED BY THE RELIEF PLT. I DISCONNECTED THE AUTOPLT AND FLEW THE REST OF THE APCH MANUALLY. I WAS AWARE OF THE PITFALLS ON THIS APCH BUT AFTER 12 HRS IN THE COCKPIT I REVERTED TO MY TRAINING. NO EXCUSE -- I SCREWED UP. HOWEVER, IF LAX DEP CAN REMIND ME 3 OR 4 TIMES TO 'CONTINUE THE LOOPE RESTRS' WHY CAN'T THEY CLR ME FOR THE ILS RWY 25L APCH FROM FUELR COMPLY WITH ILS RWY 25L RESTRS? IT MAY JOG MY FEEBLE MEMORY, ESPECIALLY AFTER A LONG INTL FLT.

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.