Ce-750 flight crew reported loss of hydraulic system a on descent. Crew ran the checklists; declared...

Attributes
ACN	1051348
Time
Date	201211
Local Time Of Day	0001-0600
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Make Model Name	Citation X (C750)
Operating Under FAR Part	Part 91
Flight Phase	Descent
Route In Use	Vectors
Component
Aircraft Component	Hydraulic Main System
Person 1
Function	First Officer Pilot Not Flying
Qualification	Flight Crew Air Transport Pilot (ATP)
Person 2
Function	Pilot Flying Captain
Qualification	Flight Crew Air Transport Pilot (ATP)
Events
Anomaly	Aircraft Equipment Problem Critical

Narrative:

We were in the descent for landing passing through about 15;000 ft when the hydraulic vol low a EICAS message illuminated. We checked the hydraulic page and it showed 16%. We ran the appropriate checklist and advised approach that we would need delay vectors; for time to finish running the checklist; and that we would be declaring an emergency. [The] captain had talked to our passengers of the situation and said they were comfortable and at ease. After checklist was complete we advised approach that we were ready for vectors to final. The landing was normal. We stopped aircraft on the runway and shut the engines down; leaving APU power on. We chocked the aircraft with chocks borrowed from the fire truck. FBO arrived with a van and we got our passengers loaded and on their way safely. [FBO] hooked aircraft to the tug and towed us to the ramp where we continued talks with the company; completed paperwork and secured the aircraft for the night.

Original NASA ASRS Text

Title: CE-750 flight crew reported loss of Hydraulic System A on descent. Crew ran the checklists; declared an emergency; and landed safely; coming to a stop with the emergency brake system.

Narrative: We were in the descent for landing passing through about 15;000 FT when the HYD VOL LOW A EICAS message illuminated. We checked the hydraulic page and it showed 16%. We ran the appropriate checklist and advised Approach that we would need delay vectors; for time to finish running the checklist; and that we would be declaring an emergency. [The] Captain had talked to our passengers of the situation and said they were comfortable and at ease. After checklist was complete we advised Approach that we were ready for vectors to final. The landing was normal. We stopped aircraft on the runway and shut the engines down; leaving APU power on. We chocked the aircraft with chocks borrowed from the fire truck. FBO arrived with a van and we got our passengers loaded and on their way safely. [FBO] hooked aircraft to the tug and towed us to the ramp where we continued talks with the company; completed paperwork and secured the aircraft for the night.

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.

Ce-750 flight crew reported loss of hydraulic system a on descent. Crew ran the checklists; declared an emergency; and landed safely; coming to a stop with the emergency brake system.