An air carrier B737 flight crew lost the hydraulic fluid in both the 'a' and 'B' system. They declared an emergency and diverted successfully.

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Attributes
ACN	380936
Time
Date	199709
Day	Thu
Local Time Of Day	1801 To 2400
Place
Locale Reference	atc facility : ptw
State Reference	PA
Altitude	msl bound lower : 17000 msl bound upper : 17000
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Controlling Facilities	artcc : zny tower : ord
Operator	common carrier : air carrier
Make Model Name	B737-200
Operating Under FAR Part	Part 121
Flight Phase	climbout : intermediate altitude
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp pilot : flight engineer
Experience	flight time last 90 days : 20 flight time total : 14420 flight time type : 6920
ASRS Report	380936
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : flight engineer pilot : commercial pilot : atp pilot : instrument pilot : private
Experience	flight time last 90 days : 135 flight time total : 19100 flight time type : 4650
ASRS Report	381384
Events
Anomaly	aircraft equipment problem : critical other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : unspecified other flight crewa
Resolutory Action	flight crew : declared emergency none taken : detected after the fact other
Consequence	Other
Supplementary
Primary Problem	Aircraft

Narrative:

At 13000 ft 'B' system hydraulic quantity light came on. We were climbing to 17000 ft and then 'a' system quantity went to zero. We followed abnormal procedures for loss of 'a' and 'B' system hydraulics. We declared an emergency and landed runway 27L in phl. We were towed to gate without incident.

Original NASA ASRS Text

Title: AN ACR B737 FLC LOST THE HYD FLUID IN BOTH THE 'A' AND 'B' SYS. THEY DECLARED AN EMER AND DIVERTED SUCCESSFULLY.

Narrative: AT 13000 FT 'B' SYS HYD QUANTITY LIGHT CAME ON. WE WERE CLBING TO 17000 FT AND THEN 'A' SYS QUANTITY WENT TO ZERO. WE FOLLOWED ABNORMAL PROCS FOR LOSS OF 'A' AND 'B' SYS HYDS. WE DECLARED AN EMER AND LANDED RWY 27L IN PHL. WE WERE TOWED TO GATE WITHOUT INCIDENT.

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.