B737-800 flight crew reports missing the keggs crossing restriction on the loop 6 departure from lax...

Narrative:

We were flying the loop six departure out of lax in a heavy -800. It was a reduced climb 1 giving us a climb gradient of 530 ft/NM up to 10;000 feet. The SID called for at least 500 ft/NM to 10;000 feet. Passing 3;000 feet; I called for 250 knots following briefing page guidance. The captain questioned why I wanted to accelerate and I explained it was due to the guidance on the briefing page. Later I realized he was concerned about meeting the 10;000 feet restriction overhead lax. ATC gave us an early turn toward lax. Pointing toward lax I realized we would have a hard time meeting the restriction. I selected V/south and managed to meet the restriction; but slowed to 210 to 220 knots in the process. Reaching 10;000 feet right at lax. I selected VNAV to pick up speed again. Right at this point there was a frequency change and the captain was talking on the radio so I didn't tell him of my VNAV selection. Shortly after picking up speed; I got an 'unable next altitude' and I now realized I would have a hard time meeting the keggs at 13;000 feet restriction. Again I selected V/south; but this time we didn't make the restriction and was probably a little above 12;000 feet crossing keggs. We did meet the coopp restriction at 15;000 feet. There was no traffic conflict that we were aware of and ATC didn't say anything about us not meeting the restriction. I think it was a combination of an early turn by ATC and my unfamiliarity with the departure that lead to the event. Had I stayed at 210 and made an easy turn we would probably have made the restriction. ATC should be careful about turning us too early. According to the performance calculations; we should have been able to meet the restriction with a reduced climb 1 with normal acceleration.

Original NASA ASRS Text

Title: B737-800 flight crew reports missing the KEGGS crossing restriction on the Loop 6 departure from LAX due to the First Officer attempting to accelerate without consideration for the restrictions.

Narrative: We were flying the LOOP Six Departure out of LAX in a heavy -800. It was a reduced climb 1 giving us a climb gradient of 530 FT/NM up to 10;000 feet. The SID called for at least 500 FT/NM to 10;000 feet. Passing 3;000 feet; I called for 250 knots following briefing page guidance. The Captain questioned why I wanted to accelerate and I explained it was due to the guidance on the briefing page. Later I realized he was concerned about meeting the 10;000 feet restriction overhead LAX. ATC gave us an early turn toward LAX. Pointing toward LAX I realized we would have a hard time meeting the restriction. I selected V/S and managed to meet the restriction; but slowed to 210 to 220 knots in the process. Reaching 10;000 feet right at LAX. I selected VNAV to pick up speed again. Right at this point there was a frequency change and the Captain was talking on the radio so I didn't tell him of my VNAV selection. Shortly after picking up speed; I got an 'unable next altitude' and I now realized I would have a hard time meeting the KEGGS at 13;000 feet restriction. Again I selected V/S; but this time we didn't make the restriction and was probably a little above 12;000 feet crossing KEGGS. We did meet the COOPP restriction at 15;000 feet. There was no traffic conflict that we were aware of and ATC didn't say anything about us not meeting the restriction. I think it was a combination of an early turn by ATC and my unfamiliarity with the departure that lead to the event. Had I stayed at 210 and made an easy turn we would probably have made the restriction. ATC should be careful about turning us too early. According to the performance calculations; we should have been able to meet the restriction with a reduced climb 1 with normal acceleration.

Data retrieved from NASA's ASRS site as of July 2013 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.

Attributes
ACN	1068650
Time
Date	201302
Local Time Of Day	1201-1800
Place
Locale Reference	LAX.Airport
State Reference	CA
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	B737-800
Operating Under FAR Part	Part 121
Flight Phase	Climb
Route In Use	SID Loop 6
Flight Plan	IFR
Person 1
Function	Pilot Flying First Officer
Experience	Flight Crew Last 90 Days 137 Flight Crew Type 676
Person 2
Function	Pilot Not Flying Captain
Experience	Flight Crew Last 90 Days 116
Events
Anomaly	Deviation - Altitude Crossing Restriction Not Met Deviation - Altitude Undershoot Deviation - Procedural Clearance Deviation - Procedural Published Material / Policy Deviation - Speed All Types

B737-800 flight crew reports missing the keggs crossing restriction on the loop 6 departure from lax due to the first officer attempting to accelerate without consideration for the restrictions.