A B757 EICAS alerted right hydraulic qty; the rsvr light illuminated and the quantity indicating 0.09 so the QRH procedure was completed; an emergency declared followed by a normal landing after which all quantity indications returned to normal.

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Attributes
ACN	1010977
Time
Date	201205
Local Time Of Day	0601-1200
Place
Locale Reference	ZZZZ.ARTCC
State Reference	FO
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	B757-200
Operating Under FAR Part	Part 121
Flight Phase	Descent
Flight Plan	IFR
Component
Aircraft Component	Indicating and Warning - Hydraulics
Person 1
Function	First Officer Pilot Not Flying
Person 2
Function	Captain
Qualification	Flight Crew Air Transport Pilot (ATP)
Events
Anomaly	Aircraft Equipment Problem Less Severe

Narrative:

During descent and going through FL220; EICAS showed a right hydraulic qty and also rsvr light on the overhead panel. Status page of engine showed an 'RF' on the right system and also a qty indication between .04 and .09. QRH was checked and landed the aircraft without incident. Emergency was declared.

Original NASA ASRS Text

Title: A B757 EICAS alerted R HYD QTY; the RSVR light illuminated and the quantity indicating 0.09 so the QRH procedure was completed; an emergency declared followed by a normal landing after which all quantity indications returned to normal.

Narrative: During Descent and going through FL220; EICAS showed a R HYD QTY and also RSVR light on the overhead panel. Status page of engine showed an 'RF' on the right system and also a QTY indication between .04 and .09. QRH was checked and landed the aircraft without incident. Emergency was declared.

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.