An air carrier light transport landed with no hydraulic pressure. An emergency was declared.

Attributes
ACN	236090
Time
Date	199303
Day	Thu
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : lan
State Reference	MI
Altitude	agl bound lower : 0 agl bound upper : 3000
Environment
Flight Conditions	IMC
Light	Dusk
Aircraft 1
Controlling Facilities	tracon : lan artcc : zme
Operator	common carrier : air carrier
Make Model Name	Light Transport, Low Wing, 2 Turboprop Eng
Flight Phase	descent : approach
Route In Use	approach : straight in arrival other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 230 flight time total : 5600 flight time type : 3300
ASRS Report	236090
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : commercial
Events
Anomaly	aircraft equipment problem : less severe other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : unspecified other flight crewa
Resolutory Action	flight crew : overcame equipment problem flight crew : declared emergency other
Consequence	Other
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	other

Narrative:

At FL220 lost right engine hydraulic pump. During descent, at approximately FL180, regained right engine pump. At approximately 14000 ft lost both engine hydraulic pumps. At approximately 10000 ft regained both pumps. At approximately 8000 ft lost left pump. And shortly thereafter lost right engine hydraulic pump. During approach, because of loss of both pumps, I elected to drop gear first. Nose came down and locked, mains remained unsafe. Recycled gear and reselected down, unsuccessful, declared an emergency. Accomplished emergency checklist -- emergency gear extension. Landed no flaps. On landing no nosewheel steering. Limited brakes slowly dissipated. Landed without incident.

Original NASA ASRS Text

Title: AN ACR LTT LANDED WITH NO HYD PRESSURE. AN EMER WAS DECLARED.

Narrative: AT FL220 LOST R ENG HYD PUMP. DURING DSCNT, AT APPROX FL180, REGAINED R ENG PUMP. AT APPROX 14000 FT LOST BOTH ENG HYD PUMPS. AT APPROX 10000 FT REGAINED BOTH PUMPS. AT APPROX 8000 FT LOST L PUMP. AND SHORTLY THEREAFTER LOST R ENG HYD PUMP. DURING APCH, BECAUSE OF LOSS OF BOTH PUMPS, I ELECTED TO DROP GEAR FIRST. NOSE CAME DOWN AND LOCKED, MAINS REMAINED UNSAFE. RECYCLED GEAR AND RESELECTED DOWN, UNSUCCESSFUL, DECLARED AN EMER. ACCOMPLISHED EMER CHKLIST -- EMER GEAR EXTENSION. LANDED NO FLAPS. ON LNDG NO NOSEWHEEL STEERING. LIMITED BRAKES SLOWLY DISSIPATED. LANDED WITHOUT INCIDENT.

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.