Aircraft equipment problem. 'A' hydraulic pump fluid loss.

Attributes
ACN	313006
Time
Date	199508
Day	Thu
Local Time Of Day	1801 To 2400
Place
Locale Reference	atc facility : bwi
State Reference	MD
Altitude	msl bound lower : 16000 msl bound upper : 16000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 121
Navigation In Use	Other Other
Flight Phase	descent other
Route In Use	enroute airway : zdc
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 250 flight time total : 16307 flight time type : 8217
ASRS Report	313006
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Experience	flight time last 90 days : 205 flight time total : 8767 flight time type : 5509
ASRS Report	313008
Events
Anomaly	aircraft equipment problem : critical other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : unspecified
Resolutory Action	flight crew : declared emergency none taken : unable
Consequence	Other
Supplementary
Primary Problem	Aircraft

Narrative:

Approximately 40 NM, northwest of bwi the #1 engine driven 'a' hydraulic pump 'low pressure' light illuminated. The 'a' system reservoir was indicating 1/4 and slowly decreasing. I declared an emergency with bwi approach and proceeded direct to airport. The emergency equipment was standing by. The approach, landing, rollout, and turn- off was made without incident. Aircraft was set up for evacuate/evacuation if necessary. Tower reported smoke from left main gear which was hydraulic fluid on hot brakes. There was no fire. The passenger were off-loaded to people movers and the aircraft was turned over to maintenance.

Original NASA ASRS Text

Title: ACFT EQUIP PROB. 'A' HYD PUMP FLUID LOSS.

Narrative: APPROX 40 NM, NW OF BWI THE #1 ENG DRIVEN 'A' HYD PUMP 'LOW PRESSURE' LIGHT ILLUMINATED. THE 'A' SYS RESERVOIR WAS INDICATING 1/4 AND SLOWLY DECREASING. I DECLARED AN EMER WITH BWI APCH AND PROCEEDED DIRECT TO ARPT. THE EMER EQUIP WAS STANDING BY. THE APCH, LNDG, ROLLOUT, AND TURN- OFF WAS MADE WITHOUT INCIDENT. ACFT WAS SET UP FOR EVAC IF NECESSARY. TWR RPTED SMOKE FROM L MAIN GEAR WHICH WAS HYD FLUID ON HOT BRAKES. THERE WAS NO FIRE. THE PAX WERE OFF-LOADED TO PEOPLE MOVERS AND THE ACFT WAS TURNED OVER TO MAINT.

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.