GLF4 crew had low hydraulic fluid in ZLC class a.

Attributes
ACN	576230
Time
Date	200303
Day	Thu
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : sllp.airport
State Reference	UT
Altitude	msl single value : 41000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zlc.artcc
Operator	general aviation : personal
Make Model Name	Gulfstream IV
Operating Under FAR Part	Part 91
Flight Phase	cruise : level
Flight Plan	IFR
Person 1
Affiliation	other
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 60 flight time total : 9000 flight time type : 2500
ASRS Report	576230
Person 2
Affiliation	other
Function	flight crew : first officer
Qualification	pilot : atp pilot : cfi
Experience	flight time last 90 days : 90 flight time total : 18500 flight time type : 800
ASRS Report	576231
Events
Anomaly	aircraft equipment problem : critical
Independent Detector	aircraft equipment other aircraft equipment : hyd quant low light on. hydquantiti other flight crewa other flight crewb
Resolutory Action	controller : issued new clearance flight crew : declared emergency flight crew : landed in emergency condition flight crew : diverted to another airport
Consequence	other
Supplementary
Problem Areas	Aircraft
Primary Problem	Aircraft

Narrative:

At FL410, cruise flight, amber check hydraulic quantity light illuminated. Diverted to salt lake city. ZLC declared an emergency to expedite our arrival into slc. Uneventful landing. Supplemental information from acn 576231: hydraulic quantity was observed to be low.

Original NASA ASRS Text

Title: GLF4 CREW HAD LOW HYD FLUID IN ZLC CLASS A.

Narrative: AT FL410, CRUISE FLT, AMBER CHK HYD QUANTITY LIGHT ILLUMINATED. DIVERTED TO SALT LAKE CITY. ZLC DECLARED AN EMER TO EXPEDITE OUR ARR INTO SLC. UNEVENTFUL LNDG. SUPPLEMENTAL INFO FROM ACN 576231: HYD QUANTITY WAS OBSERVED TO BE LOW.

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.