B737 first officer reports descending below the krain crossing restriction during the ILS 25L approa...

Attributes
ACN	1123693
Time
Date	201310
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	B737-700
Operating Under FAR Part	Part 121
Flight Phase	Initial Approach
Route In Use	STAR SEAVU TWO
Component
Aircraft Component	MCP
Person 1
Function	Pilot Flying First Officer
Experience	Flight Crew Last 90 Days 54 Flight Crew Type 310
Events
Anomaly	Deviation - Altitude Crossing Restriction Not Met Deviation - Altitude Overshoot Deviation - Procedural Published Material / Policy

Narrative:

Arriving on the seavu 2; we had set up and briefed the ILS 24R approach. Upon checking in with sct approach; we were cleared for the ILS 25L. Prior to changing approaches in the FMS; the MCP was set in VNAV path at 10;000 ft. Once the ILS 25L was set in the FMS; I set 1;900 ft in the altitude window to allow a descent on the approach profile. Just prior to krain at approximately 9;600 ft; we were attempting to brief the [runway] 25L approach when ATC told us to level at 9;000 ft and said we were supposed to cross krain at 10;000 ft. We acknowledged and were then cleared to continue the approach. We were subsequently cleared for the visual approach and landed with no further event. When last-minute runway changes are made; correct altitude and MCP settings must be verified prior to descending below any crossing restrictions and briefing the new approach.

Original NASA ASRS Text

Title: B737 First Officer reports descending below the KRAIN crossing restriction during the ILS 25L approach at LAX after changing the FMC from an expected ILS 24R approach.

Narrative: Arriving on the SEAVU 2; we had set up and briefed the ILS 24R approach. Upon checking in with SCT Approach; we were cleared for the ILS 25L. Prior to changing approaches in the FMS; the MCP was set in VNAV PATH at 10;000 FT. Once the ILS 25L was set in the FMS; I set 1;900 FT in the altitude window to allow a descent on the approach profile. Just prior to KRAIN at approximately 9;600 FT; we were attempting to brief the [Runway] 25L approach when ATC told us to level at 9;000 FT and said we were supposed to cross KRAIN at 10;000 FT. We acknowledged and were then cleared to continue the approach. We were subsequently cleared for the visual approach and landed with no further event. When last-minute runway changes are made; correct altitude and MCP settings must be verified prior to descending below any crossing restrictions and briefing the new approach.

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.

B737 first officer reports descending below the krain crossing restriction during the ILS 25L approach at lax after changing the FMC from an expected ILS 24R approach.