MD80. Cabin attendant called cockpit to report a strange noise in rear of cabin. First officer investigated and found noise changed when #1 throttle was moved. At this point #1 hydraulic low pressure light came on and quantity went to zero.

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Attributes
ACN	403558
Time
Date	199805
Day	Tue
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : aus
State Reference	TX
Altitude	msl bound lower : 23000 msl bound upper : 23000
Environment
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zhu
Operator	common carrier : air carrier
Make Model Name	MD-80 Super 80
Operating Under FAR Part	Part 121
Navigation In Use	Other
Flight Phase	cruise other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
ASRS Report	403558
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument
Events
Anomaly	aircraft equipment problem : critical other anomaly other
Independent Detector	other flight crewa other other : unspecified
Resolutory Action	none taken : anomaly accepted other
Consequence	other Other
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	other

Narrative:

At FL230 #3 flight attendant called about strange noise in aft left cabin. Sent first officer to investigate. Heard noise also. Called to reduce left throttle. Left hydraulic pressure low light came on and stayed on regardless of throttle position. Completed appropriate checklist. Light went out. Hydraulic quantity dropped 2 quarts. No further loss noted. Landed uneventfully. Had crash crew inspect aircraft for leaks. None noted. Taxied to gate normal.

Original NASA ASRS Text

Title: MD80. CABIN ATTENDANT CALLED COCKPIT TO RPT A STRANGE NOISE IN REAR OF CABIN. FO INVESTIGATED AND FOUND NOISE CHANGED WHEN #1 THROTTLE WAS MOVED. AT THIS POINT #1 HYD LOW PRESSURE LIGHT CAME ON AND QUANTITY WENT TO ZERO.

Narrative: AT FL230 #3 FLT ATTENDANT CALLED ABOUT STRANGE NOISE IN AFT L CABIN. SENT FO TO INVESTIGATE. HEARD NOISE ALSO. CALLED TO REDUCE L THROTTLE. L HYD PRESSURE LOW LIGHT CAME ON AND STAYED ON REGARDLESS OF THROTTLE POS. COMPLETED APPROPRIATE CHKLIST. LIGHT WENT OUT. HYD QUANTITY DROPPED 2 QUARTS. NO FURTHER LOSS NOTED. LANDED UNEVENTFULLY. HAD CRASH CREW INSPECT ACFT FOR LEAKS. NONE NOTED. TAXIED TO GATE NORMAL.

Data retrieved from NASA's ASRS site as of July 2007 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.