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A dtw bound air carrier B747-400 uses alternate system means for its landing gear and secondary flap extension upon losing its #1 hydraulic system.
| Attributes | |
| ACN | 345501 |
| Time | |
| Date | 199608 |
| Day | Thu |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : dtw |
| State Reference | MI |
| Altitude | msl bound lower : 11500 msl bound upper : 11500 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : dtw tracon : stl |
| Operator | common carrier : air carrier |
| Make Model Name | B747-400 |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other Other |
| Flight Phase | descent : approach descent other other |
| Route In Use | enroute : on vectors |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 200 flight time total : 18000 flight time type : 3000 |
| ASRS Report | 345501 |
| 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 : overcame equipment problem |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Aircraft |
| Air Traffic Incident | other |
Narrative:
Hydraulic failure system #1 on approach. Took a delaying vector to complete communication procedure. Required alternate gear extension secondary flap extension. Landed without incident. No emergency declared. No priority handling requested.
Original NASA ASRS Text
Title: A DTW BOUND ACR B747-400 USES ALTERNATE SYS MEANS FOR ITS LNDG GEAR AND SECONDARY FLAP EXTENSION UPON LOSING ITS #1 HYD SYS.
Narrative: HYD FAILURE SYS #1 ON APCH. TOOK A DELAYING VECTOR TO COMPLETE COM PROC. REQUIRED ALTERNATE GEAR EXTENSION SECONDARY FLAP EXTENSION. LANDED WITHOUT INCIDENT. NO EMER DECLARED. NO PRIORITY HANDLING REQUESTED.
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.