On visual approach to ase after gear extension, flight crew of DHC8-200 experience loss of #2 hydraulic system fluid and pressure. Land safely under emergency conditions after appropriate delays for aircraft and passenger preparation.

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Attributes
ACN	629327
Time
Date	200408
Day	Thu
Local Time Of Day	1201 To 1800
Place
Locale Reference	navaid : dbl.vor
State Reference	CO
Altitude	msl single value : 13000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : ase.tracon tower : elp.tower
Operator	common carrier : air carrier
Make Model Name	Dash 8-200
Operating Under FAR Part	Part 121
Flight Phase	descent : intermediate altitude
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : cfi pilot : atp
Experience	flight time last 90 days : 210 flight time total : 2100 flight time type : 1700
ASRS Report	629327
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : multi engine pilot : instrument pilot : commercial
Experience	flight time last 90 days : 226 flight time total : 1170 flight time type : 849
ASRS Report	629326
Events
Anomaly	aircraft equipment problem : critical
Independent Detector	aircraft equipment other aircraft equipment : master caution other flight crewa
Resolutory Action	flight crew : overcame equipment problem flight crew : declared emergency flight crew : landed in emergency condition
Consequence	other
Supplementary
Problem Areas	Aircraft
Primary Problem	Aircraft

Narrative:

During approach into aspen we extended the landing gear for a visual approach. Right after the gear extended, a master caution and the #2 engine hydraulic pump lights illuminated. Hydraulic gauges were referenced and the #2 engine hydraulic pressure and quantity were indicating zero. The gear that were previously extended indicated down and locked. Delayed vectors were requested. ATC was notified and an emergency was declared. Flight attendant was notified and the passenger were briefed. Dispatch was notified and they relayed messages to our cpr office. Our company flight manuals were referenced and complied with. After all checklists were run, we made a normal visual approach with a circled to land aspen runway 33. Upon landing, the aircraft was stopped on the runway. Engines were shut down and pins were placed in the landing gear to prevent retraction. The aircraft was towed to the gate and the passenger were allowed to deplane.

Original NASA ASRS Text

Title: ON VISUAL APCH TO ASE AFTER GEAR EXTENSION, FLT CREW OF DHC8-200 EXPERIENCE LOSS OF #2 HYD SYS FLUID AND PRESSURE. LAND SAFELY UNDER EMER CONDITIONS AFTER APPROPRIATE DELAYS FOR ACFT AND PAX PREPARATION.

Narrative: DURING APCH INTO ASPEN WE EXTENDED THE LNDG GEAR FOR A VISUAL APCH. RIGHT AFTER THE GEAR EXTENDED, A MASTER CAUTION AND THE #2 ENG HYD PUMP LIGHTS ILLUMINATED. HYD GAUGES WERE REFED AND THE #2 ENG HYD PRESSURE AND QUANTITY WERE INDICATING ZERO. THE GEAR THAT WERE PREVIOUSLY EXTENDED INDICATED DOWN AND LOCKED. DELAYED VECTORS WERE REQUESTED. ATC WAS NOTIFIED AND AN EMER WAS DECLARED. FLT ATTENDANT WAS NOTIFIED AND THE PAX WERE BRIEFED. DISPATCH WAS NOTIFIED AND THEY RELAYED MESSAGES TO OUR CPR OFFICE. OUR COMPANY FLT MANUALS WERE REFED AND COMPLIED WITH. AFTER ALL CHKLISTS WERE RUN, WE MADE A NORMAL VISUAL APCH WITH A CIRCLED TO LAND ASPEN RWY 33. UPON LNDG, THE ACFT WAS STOPPED ON THE RWY. ENGS WERE SHUT DOWN AND PINS WERE PLACED IN THE LNDG GEAR TO PREVENT RETRACTION. THE ACFT WAS TOWED TO THE GATE AND THE PAX WERE ALLOWED TO DEPLANE.

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.