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A B744 crew had 1 of 4 hydraulic system fail en route, and an unsafe gear indication when extending the landing gear upon arrival.
| Attributes | |
| ACN | 513598 |
| Time | |
| Date | 200106 |
| Day | Tue |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : rjaa.airport |
| State Reference | FO |
| Altitude | msl single value : 2800 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tower : rjaa.tower |
| Operator | common carrier : air carrier |
| Make Model Name | B747-400 |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | other |
| Flight Phase | descent : approach |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 175 flight time total : 13500 flight time type : 700 |
| ASRS Report | 513598 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Events | |
| Anomaly | aircraft equipment problem : critical other anomaly other |
| Independent Detector | other flight crewa other flight crewb |
| Resolutory Action | controller : provided flight assist flight crew : declared emergency flight crew : landed in emergency condition |
| Consequence | other |
| Supplementary | |
| Problem Areas | Aircraft |
| Primary Problem | Aircraft |
Narrative:
#4 hydraulic system failed en route from manila to narita communication procedures followed, dispatch and maintenance notified, and continued on. Upon gear extension at nrt, right wing gear failed to indicate down and locked. Emergency declared. Communication procedures for gear problem and emergency landing followed. Landing then accomplished without incident. Aircraft brought to stop on runway. Passenger deplaned via airstairs and aircraft was towed off runway. Right wing gear was hung up on gear door.
Original NASA ASRS Text
Title: A B744 CREW HAD 1 OF 4 HYD SYS FAIL ENRTE, AND AN UNSAFE GEAR INDICATION WHEN EXTENDING THE LNDG GEAR UPON ARR.
Narrative: #4 HYD SYS FAILED ENRTE FROM MANILA TO NARITA COM PROCS FOLLOWED, DISPATCH AND MAINT NOTIFIED, AND CONTINUED ON. UPON GEAR EXTENSION AT NRT, R WING GEAR FAILED TO INDICATE DOWN AND LOCKED. EMER DECLARED. COM PROCS FOR GEAR PROB AND EMER LNDG FOLLOWED. LNDG THEN ACCOMPLISHED WITHOUT INCIDENT. ACFT BROUGHT TO STOP ON RWY. PAX DEPLANED VIA AIRSTAIRS AND ACFT WAS TOWED OFF RWY. R WING GEAR WAS HUNG UP ON GEAR DOOR.
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.