A CL65 experienced a complete loss of #1 hydraulic system quantity and pressure.

Attributes
ACN	638707
Time
Date	200411
Day	Mon
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : zzz.airport
State Reference	TN
Altitude	msl single value : 310
Environment
Flight Conditions	Mixed
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zme.artcc
Operator	common carrier : air carrier
Make Model Name	Regional Jet CL65, Undifferentiated or Other Model
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 : multi engine pilot : instrument pilot : commercial pilot : atp
Experience	controller military : 8 controller radar : 17 flight time last 90 days : 250 flight time total : 8000 flight time type : 5000
ASRS Report	638707
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Events
Anomaly	aircraft equipment problem : critical
Independent Detector	aircraft equipment other aircraft equipment : hyd system indications other flight crewa
Resolutory Action	flight crew : diverted to another airport flight crew : declared emergency
Consequence	other
Supplementary
Problem Areas	Aircraft
Primary Problem	Aircraft

Narrative:

Just prior to leveloff at FL310, we got a hydraulic #1 low pressure caution message. There was no quantity or pressure in the #1 hydraulic system. We ran the QRH procedures, started the clock, called maintenance/dispatch, and decided to divert. An emergency was declared followed by an uneventful landing. Maintenance found 2 hydraulic supply lines rubbing against each other with one of them leaking. Plane was repaired and ferried.

Original NASA ASRS Text

Title: A CL65 EXPERIENCED A COMPLETE LOSS OF #1 HYD SYS QUANTITY AND PRESSURE.

Narrative: JUST PRIOR TO LEVELOFF AT FL310, WE GOT A HYD #1 LOW PRESSURE CAUTION MESSAGE. THERE WAS NO QUANTITY OR PRESSURE IN THE #1 HYD SYS. WE RAN THE QRH PROCS, STARTED THE CLOCK, CALLED MAINT/DISPATCH, AND DECIDED TO DIVERT. AN EMER WAS DECLARED FOLLOWED BY AN UNEVENTFUL LNDG. MAINT FOUND 2 HYD SUPPLY LINES RUBBING AGAINST EACH OTHER WITH ONE OF THEM LEAKING. PLANE WAS REPAIRED AND FERRIED.

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.