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A B727-200 on approach declared an emergency due to 'a' system hydraulic quantity loss caused by the left main landing gear door actuator flexible hose failure.
| Attributes | |
| ACN | 416689 |
| Time | |
| Date | 199810 |
| Day | Fri |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : las |
| State Reference | NV |
| Altitude | agl bound lower : 1500 agl bound upper : 1500 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tower : las |
| Operator | common carrier : air carrier |
| Make Model Name | B727-200 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | descent : approach ground other : taxi landing other |
| Route In Use | approach : visual |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 150 flight time total : 8000 flight time type : 1500 |
| ASRS Report | 416689 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : commercial pilot : instrument |
| 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 : detected after the fact |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Aircraft |
Narrative:
Prior to descent, the flight engineer pointed out 'a' system hydraulic quantity was approximately 1 gallon and steady. We reviewed the loss of hydraulic checklist and manual gear extension as a precaution. On approach, we extended the flaps to 15 degrees normally. Then when we put the gear down, the nose and right main extended normally but the left main remained retracted and we lost 'a' system pressure and quantity. We declared an emergency and began a 360 degree turn to the left. I told the flight engineer to accomplish the manual gear operation checklist for the left main, which he did. About 1/2 way around the turn, he got the left main down and locked. We reset our bugs for a flaps 15 degree landing and landed uneventfully. We landed with 6000 pounds of fuel. Managed to taxi to the gate with differential braking (no nose steering). Callback conversation with reporter revealed the following information: the reporter stated the aircraft was a B727-200 and the hydraulic system loss was caused by the left main gear door actuator flexible hose failure.
Original NASA ASRS Text
Title: A B727-200 ON APCH DECLARED AN EMER DUE TO 'A' SYS HYD QUANTITY LOSS CAUSED BY THE L MAIN LNDG GEAR DOOR ACTUATOR FLEXIBLE HOSE FAILURE.
Narrative: PRIOR TO DSCNT, THE FE POINTED OUT 'A' SYS HYD QUANTITY WAS APPROX 1 GALLON AND STEADY. WE REVIEWED THE LOSS OF HYD CHKLIST AND MANUAL GEAR EXTENSION AS A PRECAUTION. ON APCH, WE EXTENDED THE FLAPS TO 15 DEGS NORMALLY. THEN WHEN WE PUT THE GEAR DOWN, THE NOSE AND R MAIN EXTENDED NORMALLY BUT THE L MAIN REMAINED RETRACTED AND WE LOST 'A' SYS PRESSURE AND QUANTITY. WE DECLARED AN EMER AND BEGAN A 360 DEG TURN TO THE L. I TOLD THE FE TO ACCOMPLISH THE MANUAL GEAR OP CHKLIST FOR THE L MAIN, WHICH HE DID. ABOUT 1/2 WAY AROUND THE TURN, HE GOT THE L MAIN DOWN AND LOCKED. WE RESET OUR BUGS FOR A FLAPS 15 DEG LNDG AND LANDED UNEVENTFULLY. WE LANDED WITH 6000 LBS OF FUEL. MANAGED TO TAXI TO THE GATE WITH DIFFERENTIAL BRAKING (NO NOSE STEERING). CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THE RPTR STATED THE ACFT WAS A B727-200 AND THE HYD SYS LOSS WAS CAUSED BY THE L MAIN GEAR DOOR ACTUATOR FLEXIBLE HOSE FAILURE.
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.