What it covers
The unit that maintains a preset operating system pressure to the using auxiliary hydraulic system. Typical parts are regulator, seal, case, etc.
Service difficulty reports · 8
Reports filed under 2927, newest first.
| 1997 | 1 |
|---|---|
| 2004 | 1 |
| 2007 | 1 |
| 2015 | 1 |
| 2018 | 2 |
| 2021 | 2 |
SDR E0YA2021102300005Transducer · erraticHYDRAULIC PRESSURE ABOVE NORMAL OPERATING RANGE. CHECKLIST CALLS FOR SELECTING HYDRAULIC PRESSURE RELIEF SWITCH, THEN BLOW DOWN GEAR USING PNEUMATIC BOTTLE, AND LAND WITHOUT BRAKES.SDR DALA2021032201663Pressure Switch · malfunctionedSHIP 5808-MISC/DE- DUE TO R HYD SYS PRESS EICAS MESSAGE. CORRECTIVE ACTION: REPLACED RT SYSTEM PRESSURE SWITCH. OPS CHECKED OK.SDR GTIA2018120302987Pressure Switch · inaccurateAIR RETURN: IN FLIGHT, HYD BLUE LO PR-PERFORMED TSM 29-12-00-810-805 CHECK CONTINUITY BETWEENPRESS SW 2151GN & CINNECTOR 1853VT CHECK OK .R&R PRESSURE SW 2151 GN OPS CHECK OK R&R AMM 29-32-12 LEAK CHECK OKSDR CA180616003Pressure Switch · fluctuates(CAN) HYDRAULIC PRESSURE SWITCH PRE MOD 6/2313 DROPS TO 1220 PSI. OUTSIDE THE PERMISSIBLE LIMIT, SWITCH OPENS AT INCONSISTENT PRESSURES IN 1480, 1520,1500 PSI`S ATA 29-00. (TC# 20180616003)SDR CA150609006Pressure Switch · faulty(CAN) DURING TAKEOFF, THE PILOT SELECTED GEAR UP BUT THE RT MAIN GEAR WOULD NOT RETRACT. THE ELECTRIC HYDRAULIC PUMP SHUTOFF, BUT DID NOT POP THE CIRCUIT BREAKER. GEAR WAS LOWERED USING EMERGENCY HAND PUMP. MAINTENANCE INSPECTION REVEALED THAT THE PRESSURE SSDR BB07039Pressure Switch · malfunctionedFLIGHT 748, PHL-AMS: FLIGHT DIVERTED TO CLT DUE TO A NUMBER 2 ENGINE DRIVEN PUMP LOW PRESSURE LIGHT. PRESSURE INDICATION REMAINED NORMAL. MAINTENANCE REPLACED PRESSURE SWITCH S31. NO FURTHER FAULTS.SDR 0401139884Limiter · crackedAIRCRAFT EXPERIENCED A TOTAL LOSS OF HYDRAULIC FLUID FROM THE LT SYSTEM AFTER RETRACTION OF LANDING GEAR DURING CLIMBOUT. COMPLIED WITH COM PROCEDURES AND THE FLIGHT RETURNED FOR AN UNEVENTFUL LANDING BACK AT MSP. IT WAS NOTED THAT THE RT HYDRAULIC SYSTEM MAINSDR CA970722009Seal · leaking(CAN) DURING ROUTINE SERVICING OF THE HYDRAULIC SYSTEM RESERVOIR HEADER PRESSURE THE REGULATOR HAD A SEAL FAILURE RESULTING IN PRESSURE LOSS. THE REGULATOR WAS CHANGED AND THE AIRCRAFT RETURNED TO SERVICE.