An md-10 lost of #1 hydraulic system. An emergency was declared and a normal landing ensued.

Attributes
ACN	1021928
Time
Date	201207
Local Time Of Day	0601-1200
Place
Locale Reference	ZZZ.ARTCC
State Reference	US
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	DC-10 30
Operating Under FAR Part	Part 121
Flight Phase	Cruise
Component
Aircraft Component	Hydraulic Main System
Person 1
Function	First Officer Pilot Flying
Qualification	Flight Crew Air Transport Pilot (ATP)
Events
Anomaly	Aircraft Equipment Problem Critical

Narrative:

During cruise autopilot disconnected due to hydraulic system 1 off alert and 60% loss of hydraulic fluid in system 1. During configuration we lost more fluid and after landing and clearing the active runway we received the hydraulic 1 fail alert and had only .9 gallons of hydraulic fluid remaining in system 1. We elected to get towed to parking from maintenance. No problems overall with the crew; ATC; or handling of the situation.

Original NASA ASRS Text

Title: An MD-10 lost of #1 Hydraulic System. An emergency was declared and a normal landing ensued.

Narrative: During Cruise autopilot disconnected due to Hydraulic System 1 Off alert and 60% loss of hydraulic fluid in System 1. During configuration we lost more fluid and after landing and clearing the active runway we received the Hydraulic 1 Fail alert and had only .9 gallons of hydraulic fluid remaining in System 1. We elected to get towed to parking from Maintenance. No problems overall with the crew; ATC; or handling of the situation.

Data retrieved from NASA's ASRS site as of July 2013 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.