A B727-200 on descent at 16000 ft experienced complete loss of B system hydraulic pressure and quantity caused by a failed fitting in the B system reservoir area.

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Attributes
ACN	425966
Time
Date	199901
Day	Tue
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : dfw
State Reference	TX
Altitude	msl bound lower : 16000 msl bound upper : 16000
Environment
Light	Daylight
Aircraft 1
Controlling Facilities	tower : dfw
Operator	common carrier : air carrier
Make Model Name	B727-200
Flight Phase	landing other other
Route In Use	arrival star : star
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : second officer
ASRS Report	425966
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
ASRS Report	425965
Events
Anomaly	aircraft equipment problem : critical other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : unspecified other flight crewa
Resolutory Action	flight crew : declared emergency none taken : unable none taken : detected after the fact
Consequence	Other

Narrative:

During descent to dfw we experienced complete loss of system B hydraulics. This affected aircraft control, however, we ran appropriate checklists and we continued to dfw for a visual approach to runway 17R. We asked ATC for crash fire rescue equipment to stand by and for company to have a tug to tow us to ramp as braking would be in question. We overshot final briefly as control was slower to respond than normal. We landed uneventfully, but during tow in the tow bar broke. This caused the aircraft to lurch then roll towards the tug. The first officer stopped the aircraft with the brakes. Ground crew got another tow bar and towed us to the gate. Callback conversation with reporter revealed the following information: reporter stated the aircraft was a B727-200 and the hydraulic loss was caused by a failed fitting in the aft stairway reservoir area.

Original NASA ASRS Text

Title: A B727-200 ON DSCNT AT 16000 FT EXPERIENCED COMPLETE LOSS OF B SYS HYD PRESSURE AND QUANTITY CAUSED BY A FAILED FITTING IN THE B SYS RESERVOIR AREA.

Narrative: DURING DSCNT TO DFW WE EXPERIENCED COMPLETE LOSS OF SYS B HYDS. THIS AFFECTED ACFT CTL, HOWEVER, WE RAN APPROPRIATE CHKLISTS AND WE CONTINUED TO DFW FOR A VISUAL APCH TO RWY 17R. WE ASKED ATC FOR CFR TO STAND BY AND FOR COMPANY TO HAVE A TUG TO TOW US TO RAMP AS BRAKING WOULD BE IN QUESTION. WE OVERSHOT FINAL BRIEFLY AS CTL WAS SLOWER TO RESPOND THAN NORMAL. WE LANDED UNEVENTFULLY, BUT DURING TOW IN THE TOW BAR BROKE. THIS CAUSED THE ACFT TO LURCH THEN ROLL TOWARDS THE TUG. THE FO STOPPED THE ACFT WITH THE BRAKES. GND CREW GOT ANOTHER TOW BAR AND TOWED US TO THE GATE. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: RPTR STATED THE ACFT WAS A B727-200 AND THE HYD LOSS WAS CAUSED BY A FAILED FITTING IN THE AFT STAIRWAY RESERVOIR AREA.

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.