What this system is
ATA 29 covers hydraulic power generation, storage, distribution, control and indication. Hydraulic power may operate flight controls, landing gear, brakes, steering, doors or other high-force users.
AIRCRAFT SYSTEM LEARNING
ATA 29 — Hydraulic Power
ATA 29 covers hydraulic power generation, storage, distribution, control and indication. Hydraulic power may operate flight controls, landing gear, brakes, steering, doors or other high-force users.
LEARNStart with system fundamentalsUse guided learning paths and beginner-friendly explanations.
SOLVEReview troubleshooting casesFind reported symptoms, findings, causes and verified outcomes.
ASKAsk a technical questionUse the community when indexed knowledge does not answer the problem.
UNDERSTANDLook up technical termsMove from unfamiliar terminology into connected learning.
ATA 29
Hydraulic Power
Hydraulic generation, distribution, control and indication.
78%Developing profileNeeds refresh
START LEARNINGStart with the system purpose and major component groups, then use the linked glossary, resources and videos before moving into aircraft-specific detail.
TROUBLESHOOT THIS SYSTEMDefine the reported symptom, confirm aircraft and configuration applicability, then follow current approved fault-isolation and maintenance data.
Why it exists
Create and distribute pressurized fluid power while controlling temperature, quantity, pressure and system isolation.
What belongs here
- Engine-driven or electric pumps
- Reservoirs and pressurization
- Filters and accumulators
- Priority or shutoff valves
- Manifolds and distribution lines
- Heat exchangers
- Pressure, quantity and temperature sensors
What users may see
Hydraulic synoptics or panels may show pump state, system pressure, reservoir quantity, temperature, low-pressure or overheat messages and valve position.
What technicians commonly evaluate
Fluid contamination, leaks, reservoir servicing, pump case drain or performance, filter indications, accumulator condition, thermal effects, isolation and correct depressurization are recurring concerns.
AIRCRAFT APPLICABILITY
General ATA knowledge
General ATA knowledge is separated from aircraft-family and exact-variant information.
Choose an aircraft family to narrow resources, cases, questions and indexed applicability.
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Content is filtered by the selected ATA chapter and, where indexed, the aircraft and exact variant.
Technical resources
Browse all →DIAGRAMB737 MAX ATA 29 — Hydraulic Power Visual Map
A four-diagram original TechOpsBase visual explainer for Systems A/B, pump pairing, standby hydraulics and the PTU relationship.
Aircraft familyARTICLEB737 MAX ATA 29 — Hydraulic Maintenance Reasoning: Leakage, Contamination and Safe BoundariesConnect internal leakage, contamination control, residual pressure, fluid temperature and movement hazards into one maintenance-oriented reasoning mo…
Aircraft familyARTICLEB737 MAX ATA 29 — Hydraulic Indications and Technician ReasoningUse pressure, LOW PRESSURE and system behavior as separate evidence streams instead of treating one cockpit indication as a complete hydraulic diagno…
Aircraft familySYSTEM_GUIDEB737 MAX ATA 29 — Power Transfer Unit (PTU): Functional Role and System RelationshipsLearn what the PTU transfers, why the A and B fluids do not need to mix, and how leading-edge-device, air/ground and pressure-switch logic enter the …
Aircraft familySYSTEM_GUIDEB737 MAX ATA 29 — Standby Hydraulic System ExplainedUnderstand the standby reservoir, electric pump, pressure module and backup-function role without confusing the standby circuit with normal Systems A…
Aircraft familySYSTEM_GUIDEB737 MAX ATA 29 — Pumps, Reservoirs and Pressure SourcesUnderstand the EDP/EMDP pairings, reservoir role, pressure-source differences and why pump availability must be separated from actual system capabili…
Aircraft familySYSTEM_GUIDEB737 MAX ATA 29 — Hydraulic System Architecture and Energy FlowBuild a durable mental model of Systems A and B, the standby system, pressure sources, reservoirs and the difference between hydraulic power removal …
Aircraft familySYSTEM_GUIDEHydraulic System FundamentalsGeneral hydraulic-power principles for aircraft: generation, storage, distribution, control, indication and protection.
General theoryRelated glossary terms
Browse all →INTERMEDIATEHydraulic accumulator
A pressure-storage device that uses compressed gas to store hydraulic energy.
INTERMEDIATEPTUPower Transfer Unit: a device that transfers hydraulic power between systems without mixing their fluid.
INTERMEDIATERATRam Air Turbine: a deployable turbine that uses airflow to provide emergency hydraulic or electrical power.
SOURCE & REVIEW BOUNDARY
Use the right information for the right decision.
TechOpsBase supports learning and technical discovery. Current approved maintenance data, engineering instructions and company procedures control real aircraft work.
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