The aircraft is due for service
Use this path for 100-hour, annual, 200-hour, 600-hour, rubber, hose, coolant, oil, gearbox, carburetor, or iS/fuel-system planning.
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SLSA, ELSA & Rotax 9 Series Maintenance Services
Start with the aircraft, the symptom, or the document question. Lima Charlie Aero LLC organizes support by the kind of decision an owner is trying to make.
Choose a starting point
Not sure which service applies?
You do not need to identify the exact inspection package before reaching out. Start with the engine model, aircraft, time since last service, fuel use, and what you are trying to solve. I'll help separate scheduled service planning from symptom troubleshooting.
The aircraft is doing something abnormal
Use this path for mag drop, rough running, high oil temperature, fuel pressure changes, vibration, ignition, ECU, or cooling concerns.
Open Rotax Support guideI am buying or reviewing an aircraft
Use this path for prebuy, records review, configuration questions, and supportability concerns.
Aircraft Owner Starting Point
Most requests begin with a symptom, an inspection deadline, a prebuy question, or a records issue.
From KAKH / Gastonia Municipal Airport, Lima Charlie Aero LLC supports Rotax 9 Series, light-sport, experimental, propeller/vibration, prebuy, records, manufacturer coordination, and flight school needs across Gastonia, Charlotte, and the Carolinas by appointment.
The first useful step is simple: identify the aircraft, location, what changed, what is due, or what needs to be verified.
Rotax Support
For owners with engine symptoms, warnings, heat, fuel, or vibration concerns.
Rotax 9 Series Troubleshooting
Rough running, hard starting, vibration, heat symptoms, EMS warnings, or uncertain service history on 912, 914, 915 iS, or 916 iS engines.
Ignition / Fuel / Oil / Cooling / Gearbox
Ignition drop, ECU or EMS warnings, fuel pressure, carb or injector concerns, high oil temperature, cooling issues, gearbox chatter, or vibration.
Rotax 912 / 914 / 915 iS / 916 iS
Engine-family context matters. Lima Charlie Aero LLC separates reported symptoms from configuration, installation, maintenance history, and applicable instructions.
Rotax Installation Review
Cooling, fuel, oil, exhaust, cable, sensor, chafe, and serviceability concerns can start with the way the engine is installed and documented.
Rotax Service Planning
Rotax 9 Series service packages and interval planning
The first question is not only what is due, but why it is due on this aircraft. A service package should match the engine family, aircraft documents, logbooks, fuel use, and operating history.
Planning guide, not a maintenance manual
This is a planning guide, not a substitute for the current engine-specific Rotax maintenance manual, Service Bulletins, aircraft maintenance instructions, or logbook status. The applicable engine model, serial number, installation, fuel use, operating history, and aircraft documents control what is due.
Four-stroke Rotax 9 Series aircraft engine planning: 912 UL / 912 ULS / 912 S / 912 A/F series as applicable, 912 iS / 912 iSc Sport, 914 UL / 914 F, 915 iS / 915 iSc, and 916 iS / 916 iSc.
25-hour initial inspection
Initial inspection for new or overhauled engines. The 25-hour check generally follows the 100-hour inspection scope and is used to establish a controlled baseline after early operation.
- New, overhauled, or initial post-installation planning when applicable.
- Early-operation findings, logbook baseline, leak check, and next-due item review.
50-hour / leaded-fuel oil-service planning
Manufacturer-recommended intermediate check. Oil-service planning becomes especially important when leaded AVGAS use is significant. Use the engine-specific instructions and fuel-use history to determine what is due.
- Oil-service and oil-filter planning.
- Magnetic plug / filter inspection as applicable.
- Leaded-fuel considerations and operating-history review.
100-hour / annual inspection package
The core recurring inspection interval for Rotax 9 Series support planning: 100 hours or 12 months, whichever comes first, unless the applicable instructions require otherwise.
- Service Bulletin / Alert Service Bulletin status and logbook review.
- Differential compression, spark plugs, magnetic plug, oil, and oil filter service planning.
- Engine visual, hose/line, wiring, sensor, connector, mount, fastener, exhaust, airbox, intake, cooling, test-run, and leak-check planning as applicable.
200-hour expanded inspection package
Adds engine-specific expanded checks to the 100-hour baseline. This is often where carburetor, synchronization, gearbox, cooling, installation, and system-condition items need closer planning depending on engine family and configuration.
- Carburetor synchronization, mechanical and pneumatic, where applicable.
- Carburetor actuation, starting-carburetor check, float chamber venting, float weight, sockets, and drip trays where applicable.
- Fuel delivery, gearbox friction torque / condition, cooling, installation, logbook, and SB status review.
400-hour recurring planning point
A recurring planning point in the maintenance schedule. It should be reviewed with the engine-specific checklist, aircraft records, and prior 100/200-hour history.
- Review cumulative findings and verify previous interval compliance.
- Check recurring 100/200-hour items as applicable.
- Identify upcoming 600-hour or five-year items.
600-hour expanded service planning
A major planning interval for deeper engine-specific checks. Scope depends on engine family, gearbox configuration, installation, fuel use, and current Rotax instructions.
- Gearbox / overload clutch, friction torque, and gearbox-condition checks where applicable.
- Expanded carburetor or fuel-system review.
- Cooling, oil, fuel hose, ignition, electrical, ECU, records, and Service Bulletin reconciliation as applicable.
1000-hour planning point
A higher-time planning point that should be approached with the current engine-specific Rotax maintenance schedule, service bulletins, aircraft records, and operating history.
- Accumulated records and deferred-item review.
- Gearbox, fuel, cooling, and ignition system planning.
- TBO / overhaul planning discussion when relevant.
Five-year rubber / hose / time-limited parts planning
Rotax four-stroke installations have important time-limited rubber, hose, and engine-family-specific parts. These are not cosmetic items; they affect fuel, oil, coolant, intake, and installation reliability.
- Carbureted 912/914 planning can include venting hoses, diaphragms, sockets, cooling/fuel/oil hoses, intake connecting hose, fuel pump venting hose, V-belt, expansion-tank rubber plate, O-rings, and fuel-pump time-limit planning where applicable.
- Injected and turbo-injected planning can include cooling hoses, lubrication hoses within the engine supply volume / aircraft maintenance context, expansion-tank rubber plate, fuel pressure regulator assembly, fuel filters, electric fuel pumps, ECU data, and fault-memory review where applicable.
Coolant service planning
Coolant service depends on coolant type, manufacturer instructions, Rotax instructions, aircraft installation, and whether the coolant type has changed. Coolant condition, expansion tank, radiator cap, hoses, and system flushing must be considered as a system.
- Coolant level and condition, expansion tank, radiator cap, hoses, and cooling airflow / installation context.
- Flush planning if coolant type has changed or deposits/requirements indicate.
- Coolant replacement per manufacturer and applicable instructions.
Carburetor service package
Applicable primarily to carbureted 912/914 engines. I do not treat a mag drop, fuel-pressure change, or hose-age concern as a one-size-fits-all problem.
- Idle speed, throttle actuation, starting-carburetor / choke actuation, and Bowden cable travel.
- Float chamber venting, float weight check, mechanical and pneumatic synchronization.
- Carburetor sockets, drip trays, diaphragms, venting hoses, rubber time-limit planning, and rough-running symptom context.
Fuel-injected / iS / turbo injected service planning
Applicable to 912 iS, 915 iS, and 916 iS families. Fault behavior and operating condition matter as much as the displayed warning.
- Fuel filter planning, electric fuel pump checks as applicable, and fuel pressure behavior.
- ECU / Lane / fault-memory review as applicable.
- Sensor, wiring, fault behavior, operating-condition, and turbo/EMS support planning for 915 iS / 916 iS.
Unscheduled / event-driven checks
These are not normal scheduled services. They are event-driven checks that may be required before further operation depending on the event and applicable instructions.
- Propeller strike, over-temperature, oil pressure event, overspeed, fuel quality issue, or coolant specification issue.
- Rough running / abnormal operation, lightning strike / environmental exposure, fire or water exposure, or abnormal vibration.
Light-Sport / Experimental
For owners trying to understand category, documents, privileges, and practical scope.
S-LSA Support
Inspection timing, maintenance manual questions, safety directives, service bulletins, and work planning tied to aircraft documents.
E-LSA Support
Condition inspection timing, operating limitations, category/class questions, records continuity, and certificate/rating boundary review.
Experimental Aircraft Support
Experimental support is bounded by aircraft documents, operating limitations, owner responsibilities, and applicable privileges for the requested scope.
Owner-Assist Planning
A realistic plan for parts, records, tasks, tools, airport access, scheduling, and what must be documented before work starts.
Prebuy / Records / Documentation
For buyers and owners who need risk control before money, travel, or repair decisions.
Prebuy Evaluation
Aircraft identity, category, engine configuration, inspection history, damage history, records gaps, and Rotax status before purchase pressure hardens.
Aircraft Records Review
Airframe, engine, propeller, certificate, operating limitation, directive, and recurring maintenance records reviewed for missing or unclear items.
Service Bulletin / Safety Directive Review
Aircraft and engine records can be organized against available manufacturer and Rotax documentation before a next action is chosen.
LOA / Manufacturer / Engineering Packet Support
Manufacturer coordination, LOA-related documentation, engineering packet support or coordination, and clear evidence packages without claiming approval authority.
Cracked Engine Cage / Structural Finding Documentation
Observed condition, records, photos, manufacturer guidance path, and supportable next actions organized within the applicable authority boundary.
Propeller / Fleet / Coordination
For vibration concerns, manufacturer communication, repeat squawks, and schedule pressure.
Propeller / Vibration / Prop-Balancing Support
RPM-specific vibration, propeller balance questions, gearbox interaction, propeller records, and whether balancing support or coordination is the right next step.
e-Prop / Propeller Manufacturer Coordination
Propeller model and serial context, installation records, symptoms, manufacturer correspondence, and the information needed for a clean support package.
Flight School / Fleet Support
Repeat squawk tracking, records review, inspection scheduling, common parts/document needs, and consistent support planning for Rotax-powered training aircraft.
Mobile / Owner-Coordinated Support Planning
Support away from KAKH depends on the aircraft need, airport rules, weather, hangar access, parts, documentation, and available tools at the airfield.
Start with the facts
Start with the aircraft, airport, and issue in front of you.
Send the N-number or tail number, aircraft location, and the symptom, inspection deadline, prebuy question, records concern, or fleet need. I will review the aircraft context before recommending the next practical step.
Start with the aircraft and symptom