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A319 flight crew reports a hydraulic G rsvr ovht ECAM during climbout and complies with ECAM actions; turning off the green engine driven pump and the ptu. Upon doing so a strong vibration is felt in the airframe and through the flight controls. Attempts to quell the vibration are initially unsuccessful and the decision is made to divert. The vibration continues and the crew elects to turn the green hydraulic system pumps back on since the overheat had gone away. This action has a positive effect and a normal landing ensues at the diversion airport.
| Attributes | |
| ACN | 1015359 |
| Time | |
| Date | 201206 |
| Local Time Of Day | 1801-2400 |
| Place | |
| Locale Reference | ZZZ.ARTCC |
| State Reference | US |
| Environment | |
| Flight Conditions | VMC |
| Aircraft 1 | |
| Make Model Name | A319 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Climb |
| Flight Plan | IFR |
| Component | |
| Aircraft Component | Hydraulic Fluid |
| Person 1 | |
| Function | Pilot Not Flying Captain |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Person 2 | |
| Function | Pilot Flying First Officer |
| Events | |
| Anomaly | Aircraft Equipment Problem Critical |
Narrative:
On climb passing FL180 we received an ECAM; hydraulic G rsvr ovht. ECAM directed us to turn off the ptu; and G engine 1 pump. After doing so we experienced a significant airframe vibration/flight control flutter. After completing the ECAM actions; and consulting the fom; we attempted to find the source of flutter. We changed the pitch angle; and changed power settings to no avail. In the interest of safety we declared an emergency and plotted our diversion. Although the fom directs you to turn the G engine 1 pump on for the approach procedure; (G ovht out); based on experience; systems knowledge; and an overall concern for the integrity of the flight controls; we decided to turn the G engine 1 pump; and ptu pump on in an effort to stop the flight control flutter; (G ovht light out). Immediately after turning both pumps on; the flutter abated. We continued our diversion; had crash fire rescue equipment trucks standing by; and made a routine landing.
Original NASA ASRS Text
Title: A319 flight crew reports a HYD G RSVR OVHT ECAM during climbout and complies with ECAM actions; turning off the green engine driven pump and the PTU. Upon doing so a strong vibration is felt in the airframe and through the flight controls. Attempts to quell the vibration are initially unsuccessful and the decision is made to divert. The vibration continues and the crew elects to turn the green hydraulic system pumps back on since the overheat had gone away. This action has a positive effect and a normal landing ensues at the diversion airport.
Narrative: On climb passing FL180 we received an ECAM; HYD G RSVR OVHT. ECAM directed us to turn OFF the PTU; and G ENG 1 PUMP. After doing so we experienced a significant airframe vibration/flight control flutter. After completing the ECAM actions; and consulting the FOM; we attempted to find the source of flutter. We changed the pitch angle; and changed power settings to no avail. In the interest of safety we declared an emergency and plotted our diversion. Although the FOM directs you to turn the G ENG 1 pump on for the approach procedure; (G OVHT OUT); based on experience; systems knowledge; and an overall concern for the integrity of the flight controls; we decided to turn the G ENG 1 PUMP; and PTU PUMP on in an effort to stop the flight control flutter; (G OVHT light OUT). Immediately after turning both pumps on; the flutter abated. We continued our diversion; had CFR trucks standing by; and made a routine landing.
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.