A glf-iv suffered the partial loss of combined system hydraulic fluid but landed safely with flaps 2...

Attributes
ACN	968435
Time
Date	201109
Local Time Of Day	0001-0600
Place
Locale Reference	ZZZ.TRACON
State Reference	US
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	Gulfstream IV / G350 / G450
Operating Under FAR Part	Part 91
Flight Phase	Initial Approach
Flight Plan	IFR
Component
Aircraft Component	Hydraulic Main System
Person 1
Function	Pilot Not Flying Captain
Qualification	Flight Crew Air Transport Pilot (ATP)
Person 2
Function	First Officer Pilot Flying
Qualification	Flight Crew Air Transport Pilot (ATP)
Events
Anomaly	Aircraft Equipment Problem Less Severe

Narrative:

Following the selection of flaps 10 while configuring for the approach; we received a 'check hyd qty' cas message. The synoptic page confirmed the low quantity (amber) in the combined system. We requested delay vectors and began working through the QRH/qrc procedures. I contacted maintenance control and advised them of our status and we agreed that landing as soon as possible was in our best interest. We selected flaps 20 to confirm; or rule out; the flaps as the location of the leak. The flaps did reach 20 but the quantity indication turned red and showed a slightly lower value. We then disabled the flaps and continued with the checks. The gear extended normally. We landed with flaps 20 without incident and had normal braking. After landing we taxied clear of the runway and pinned the gear before taxiing to the FBO.

Original NASA ASRS Text

Title: A GLF-IV suffered the partial loss of combined system hydraulic fluid but landed safely with flaps 20 and normal braking.

Narrative: Following the selection of flaps 10 while configuring for the approach; we received a 'check hyd qty' CAS message. The synoptic page confirmed the low quantity (amber) in the combined system. We requested delay vectors and began working through the QRH/QRC procedures. I contacted Maintenance Control and advised them of our status and we agreed that landing ASAP was in our best interest. We selected flaps 20 to confirm; or rule out; the flaps as the location of the leak. The flaps did reach 20 but the quantity indication turned red and showed a slightly lower value. We then disabled the flaps and continued with the checks. The gear extended normally. We landed with flaps 20 without incident and had normal braking. After landing we taxied clear of the runway and pinned the gear before taxiing to the FBO.

Data retrieved from NASA's ASRS site as of April 2012 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.

A glf-iv suffered the partial loss of combined system hydraulic fluid but landed safely with flaps 20 and normal braking.