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B757 captain experiences a right hydraulic quantity EICAS about 30 minutes after departure and returns to the departure airport. During approach; with the right hydraulic system operational and the autopilot engaged; a vigorous pitch up occurs. The autopilot does not disconnect but is quickly disengaged by the first officer and a normal landing ensues.
| Attributes | |
| ACN | 998019 |
| Time | |
| Date | 201203 |
| Local Time Of Day | 1801-2400 |
| Place | |
| Locale Reference | ZZZ.Airport |
| State Reference | US |
| Environment | |
| Flight Conditions | VMC |
| Light | Dusk |
| Aircraft 1 | |
| Make Model Name | B757-200 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Initial Approach |
| Component | |
| Aircraft Component | Hydraulic Fluid |
| Person 1 | |
| Function | Pilot Not Flying Captain |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Events | |
| Anomaly | Aircraft Equipment Problem Critical Deviation - Altitude Excursion From Assigned Altitude |
Narrative:
About 30 minutes after departure; right hydraulic quantity EICAS; a few moments later right reserve light; status page showed right hydraulic quantity .45. After discussion with dispatch; returned to departure airport. The hydraulic quantity rose to .55 then back down to .45 and stayed there during the remainder of the flight. Aircraft operated normally from the point of hydraulic warning until the approach phase. Just prior to intercepting the localizer; at flaps 1 and 210 KTS; the autopilot pitched up at approximately 2 g's. The autopilot did not disconnect; but the first officer immediately did so. The remainder of the flight was normal. Probably pitch up related to hydraulic problem.
Original NASA ASRS Text
Title: B757 Captain experiences a right hydraulic quantity EICAS about 30 minutes after departure and returns to the departure airport. During approach; with the right hydraulic system operational and the autopilot engaged; a vigorous pitch up occurs. The autopilot does not disconnect but is quickly disengaged by the First Officer and a normal landing ensues.
Narrative: About 30 minutes after departure; right hydraulic quantity EICAS; a few moments later right reserve light; status page showed right hydraulic quantity .45. After discussion with Dispatch; returned to departure airport. The hydraulic quantity rose to .55 then back down to .45 and stayed there during the remainder of the flight. Aircraft operated normally from the point of hydraulic warning until the approach phase. Just prior to intercepting the localizer; at flaps 1 and 210 KTS; the autopilot pitched up at approximately 2 g's. The autopilot did not disconnect; but the First Officer immediately did so. The remainder of the flight was normal. Probably pitch up related to hydraulic problem.
Data retrieved from NASA's ASRS site as of July 2013 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.