B767-300 flight crew has loss of center hydraulic system; declares emergency and lands.

Attributes
ACN	693543
Time
Date	200604
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : zzzz.airport
State Reference	FO
Altitude	agl single value : 0
Environment
Flight Conditions	VMC
Light	Dusk
Aircraft 1
Controlling Facilities	artcc : zzz.artcc tower : zzzz.tower
Operator	common carrier : air carrier
Make Model Name	B767-300 and 300 ER
Operating Under FAR Part	Part 121
Flight Phase	descent : approach
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
ASRS Report	693543
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Events
Anomaly	aircraft equipment problem : less severe
Independent Detector	aircraft equipment other aircraft equipment : eicas warning other flight crewa other flight crewb
Resolutory Action	controller : provided flight assist flight crew : declared emergency flight crew : landed as precaution flight crew : overcame equipment problem
Consequence	other
Supplementary
Problem Areas	Aircraft Flight Crew Human Performance
Primary Problem	Aircraft

Narrative:

Midway along our route of flight from ZZZ to ZZZ2 confirmed center hydraulic system quantity decreasing slowly. Over HF radio facilitated a phone patch to dispatch. After a 3-WAY discussion of our aircraft status; WX; and route options with dispatch and technician; I followed QRH procedures authorizing captain's discretion to shut the center hydraulic pumps off to preserve hydraulic fluid quantity remaining. Over ZZZZ1 flying status quo; I elected to continue on with flight. Approaching the arrival descent point; I had the first officer confirm an emergency with a mayday call to ZZZZ. I requested ZZZZ airport tower operations to roll airport crash fire rescue equipment equipment. ZZZZ ATC gave us vectors to a 40 NM final away from hazardous terrain; hot air balloon and caution area. Established inbound ZZZZ turned on center hydraulic pumps; obtained landing confign normally. Continued approach and landing uneventful to a full stop.

Original NASA ASRS Text

Title: B767-300 FLT CREW HAS LOSS OF CTR HYD SYS; DECLARES EMER AND LANDS.

Narrative: MIDWAY ALONG OUR RTE OF FLT FROM ZZZ TO ZZZ2 CONFIRMED CTR HYD SYS QUANTITY DECREASING SLOWLY. OVER HF RADIO FACILITATED A PHONE PATCH TO DISPATCH. AFTER A 3-WAY DISCUSSION OF OUR ACFT STATUS; WX; AND RTE OPTIONS WITH DISPATCH AND TECHNICIAN; I FOLLOWED QRH PROCS AUTHORIZING CAPT'S DISCRETION TO SHUT THE CTR HYD PUMPS OFF TO PRESERVE HYD FLUID QUANTITY REMAINING. OVER ZZZZ1 FLYING STATUS QUO; I ELECTED TO CONTINUE ON WITH FLT. APCHING THE ARR DSCNT POINT; I HAD THE FO CONFIRM AN EMER WITH A MAYDAY CALL TO ZZZZ. I REQUESTED ZZZZ ARPT TWR OPS TO ROLL ARPT CFR EQUIP. ZZZZ ATC GAVE US VECTORS TO A 40 NM FINAL AWAY FROM HAZARDOUS TERRAIN; HOT AIR BALLOON AND CAUTION AREA. ESTABLISHED INBOUND ZZZZ TURNED ON CTR HYD PUMPS; OBTAINED LNDG CONFIGN NORMALLY. CONTINUED APCH AND LNDG UNEVENTFUL TO A FULL STOP.

Data retrieved from NASA's ASRS site as of January 2009 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.