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Emergency declared and air carrier medium large transport performs a return land to departure airport after #1 'a' hydraulic pump light comes on.
| Attributes | |
| ACN | 250175 |
| Time | |
| Date | 199308 |
| Day | Sun |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : hnl |
| State Reference | HI |
| Altitude | agl bound lower : 3000 agl bound upper : 3000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : hnl |
| Operator | common carrier : air carrier |
| Make Model Name | Medium Large Transport, Low Wing, 2 Turbojet Eng |
| Flight Phase | climbout : intermediate altitude |
| Route In Use | departure other departure sid : sid |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 120 flight time total : 6500 flight time type : 120 |
| ASRS Report | 250175 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : instrument pilot : commercial |
| Events | |
| Anomaly | aircraft equipment problem : critical non adherence : published procedure |
| Independent Detector | other flight crewa |
| Resolutory Action | flight crew : declared emergency flight crew : overcame equipment problem other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Aircraft |
| Air Traffic Incident | Pilot Deviation |
Narrative:
Shortly after takeoff from runway 8L, the master caution and hydraulic annunciator lights illuminated followed by a decrease in 'a' system quantity and #1 a pump low pressure light. Because I suspected an 'a' system hydraulic failure, I lowered the landing gear while 'a' system was still available. We declared an emergency, completed the loss of 'a' system checklist in our QRH and executed an uneventful landing to 8L. We cleared the runway at taxiway delta using differential braking and shutdown after stopping. Our aircraft required towing back to our parking ramp.
Original NASA ASRS Text
Title: EMER DECLARED AND ACR MLG PERFORMS A RETURN LAND TO DEP ARPT AFTER #1 'A' HYD PUMP LIGHT COMES ON.
Narrative: SHORTLY AFTER TKOF FROM RWY 8L, THE MASTER CAUTION AND HYD ANNUNCIATOR LIGHTS ILLUMINATED FOLLOWED BY A DECREASE IN 'A' SYS QUANTITY AND #1 A PUMP LOW PRESSURE LIGHT. BECAUSE I SUSPECTED AN 'A' SYS HYD FAILURE, I LOWERED THE LNDG GEAR WHILE 'A' SYS WAS STILL AVAILABLE. WE DECLARED AN EMER, COMPLETED THE LOSS OF 'A' SYS CHKLIST IN OUR QRH AND EXECUTED AN UNEVENTFUL LNDG TO 8L. WE CLRED THE RWY AT TXWY DELTA USING DIFFERENTIAL BRAKING AND SHUTDOWN AFTER STOPPING. OUR ACFT REQUIRED TOWING BACK TO OUR PARKING RAMP.
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.