B737-800 crew, on short final to lax, received a 'too low flaps' aural warning, due to less than landing flaps being selected.

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Attributes
ACN	540222
Time
Date	200203
Day	Thu
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : lax.airport
State Reference	CA
Altitude	agl single value : 900
Aircraft 1
Controlling Facilities	tower : lax.tower
Operator	common carrier : air carrier
Make Model Name	B737-800
Operating Under FAR Part	Part 121
Flight Phase	descent : approach
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 210 flight time total : 13000 flight time type : 6000
ASRS Report	540222
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Events
Anomaly	aircraft equipment problem : critical inflight encounter : weather non adherence : company policies other anomaly other
Independent Detector	aircraft equipment : gpws other flight crewa other flight crewb
Resolutory Action	other
Consequence	other
Supplementary
Problem Areas	Weather Flight Crew Human Performance Aircraft ATC Human Performance
Primary Problem	Flight Crew Human Performance

Narrative:

Got 'too low flaps' aural warning. Flaps were at 15 degrees or 25 degrees. Lowered to 30 degrees and landed. Pilot monitoring must back up PF. Got runway change from tower inside OM going to runway 25L. Must use clear and concise language when using checklist. PF must back up pilot monitoring duties. This is all critical -- especially going into lax. Plus, it was raining on western half of airport, etc.

Original NASA ASRS Text

Title: B737-800 CREW, ON SHORT FINAL TO LAX, RECEIVED A 'TOO LOW FLAPS' AURAL WARNING, DUE TO LESS THAN LNDG FLAPS BEING SELECTED.

Narrative: GOT 'TOO LOW FLAPS' AURAL WARNING. FLAPS WERE AT 15 DEGS OR 25 DEGS. LOWERED TO 30 DEGS AND LANDED. PLT MONITORING MUST BACK UP PF. GOT RWY CHANGE FROM TWR INSIDE OM GOING TO RWY 25L. MUST USE CLR AND CONCISE LANGUAGE WHEN USING CHKLIST. PF MUST BACK UP PLT MONITORING DUTIES. THIS IS ALL CRITICAL -- ESPECIALLY GOING INTO LAX. PLUS, IT WAS RAINING ON WESTERN HALF OF ARPT, ETC.

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.