A B737-400 loses its hydraulic pump in 'B' system climbing out of oak. During approach into sna the system fluid is lost. The aircraft diverts to lax.

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Attributes
ACN	395898
Time
Date	199803
Day	Mon
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : sna
State Reference	CA
Altitude	msl bound lower : 5000 msl bound upper : 5000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : lax
Operator	common carrier : air carrier
Make Model Name	B737-400
Operating Under FAR Part	Part 121
Navigation In Use	Other Other
Flight Phase	descent : approach descent other other
Route In Use	arrival other enroute : on vectors
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp pilot : cfi pilot : commercial pilot : flight engineer pilot : instrument
Experience	flight time last 90 days : 150 flight time total : 13000 flight time type : 2000
ASRS Report	395898
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : commercial
Events
Anomaly	aircraft equipment problem : critical other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : unspecified
Resolutory Action	flight crew : declared emergency other
Consequence	Other
Supplementary
Primary Problem	Aircraft

Narrative:

During climb out from oak, #2 engine driven pump (B system) failed with no loss of fluid. Checklists were completed and we continued to sna. Approaching downwind at sna approximately 30 mins later hydraulic quantity in 'B' system decreased to zero. Accomplished 'B' system hydraulic failure checklist and diverted to lax so as to utilize longer runway.

Original NASA ASRS Text

Title: A B737-400 LOSES ITS HYD PUMP IN 'B' SYS CLBING OUT OF OAK. DURING APCH INTO SNA THE SYS FLUID IS LOST. THE ACFT DIVERTS TO LAX.

Narrative: DURING CLBOUT FROM OAK, #2 ENG DRIVEN PUMP (B SYS) FAILED WITH NO LOSS OF FLUID. CHKLISTS WERE COMPLETED AND WE CONTINUED TO SNA. APCHING DOWNWIND AT SNA APPROX 30 MINS LATER HYD QUANTITY IN 'B' SYS DECREASED TO ZERO. ACCOMPLISHED 'B' SYS HYD FAILURE CHKLIST AND DIVERTED TO LAX SO AS TO UTILIZE LONGER RWY.

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.