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STEMME S10 Maintenance Manual

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MAINTENANCE MANUAL
AIRFRAME TYPE
TYPE CERTIFICATE
SERIAL NUMBER
REGISTRATION
MAINTENANCE MANUAL STEMME S10, VARIANT S12
DOCUMENT NUMBER:
L500-912820 ISSUE JUL 03, 2023
POWERED SAILPLANE
STEMME S10, VARIANT S12
DOCUMENT NUMBER • L500-912820
DATE OF ISSUE • JUL 03, 2023
FLUGPLATZSTRASSE F2, NR. 7 • GERMANY • 15344 STRAUSBERG
: STEMME S12
: EASA.A.054
: 12-
:
PAGE 0-1
AMENDMENT: 01
DATE: JUL 08,2024

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  • Page 1 DATE OF ISSUE • JUL 03, 2023 : STEMME S12 AIRFRAME TYPE : EASA.A.054 TYPE CERTIFICATE : 12- SERIAL NUMBER REGISTRATION MAINTENANCE MANUAL STEMME S10, VARIANT S12 PAGE 0-1 DOCUMENT NUMBER: AMENDMENT: 01 L500-912820 ISSUE JUL 03, 2023 DATE: JUL 08,2024...
  • Page 2 AIRCRAFT MAINTENANCE MANUAL STEMME S10, VARIANT S12 This aircraft may only be maintained in accordance with the instructions given in this manual. CONTACT STEMME GmbH Flugplatzstrasse F2, Nr. 7 15344 Strausberg, Germany Phone: +49.3341.3612-0 Technical Assistance: service@stemme.com Web: www.stemme.com All rights reserved.

  • Page 3: Record Of Amendments

    AIRCRAFT MAINTENANCE MANUAL STEMME S10, VARIANT S12 RECORD OF AMENDMENTS Any revision of the present manual must be recorded in the following table, with the exception of: • Installation status of optional equipment, for optional equipment refer to section »9«, •...
  • Page 4 AIRCRAFT MAINTENANCE MANUAL STEMME S10, VARIANT S12 Removed Inserted Date of Reference Approval Date of Signature Pages Pages Amendment Insertion 0-1..0-20; 0-1..0-20; 1-1..1-2; 1-1..1-2; 4-1; 4-1; 5-8..5-10, 5-8..5-10, 5-18..5-44; 5-18..5-44; The technical 6-15; 6-15; content of 7-13..7-46; 7-13..7-46; this document...

  • Page 5: List Of Effective Pages

    AIRCRAFT MAINTENANCE MANUAL STEMME S10, VARIANT S12 LIST OF EFFECTIVE PAGES his list is only valid for the serial no. specified on title page. The list contains all amendments of the maintenance manual, effective until final approval of this serial no. amendments added later must be recorded.
  • Page 6 AIRCRAFT MAINTENANCE MANUAL STEMME S10, VARIANT S12 PAGE APPROVED AM. NO. DATE PAGE APPROVED AM. NO. DATE 3-29 Jul 03, 2023 3-68 Jul 03, 2023 3-30 Jul 03, 2023 3-69 Jul 03, 2023 3-31 Jul 03, 2023 3-70 Jul 03, 2023...
  • Page 7 AIRCRAFT MAINTENANCE MANUAL STEMME S10, VARIANT S12 PAGE APPROVED AM. NO. DATE PAGE APPROVED AM. NO. DATE 5-25 Jul 08, 2024 CHAPTER 7 5-26 Jul 08, 2024 Jul 03, 2023 5-27 Jul 08, 2024 Jul 03, 2023 5-28 Jul 08, 2024...
  • Page 8 AIRCRAFT MAINTENANCE MANUAL STEMME S10, VARIANT S12 PAGE APPROVED AM. NO. DATE PAGE APPROVED AM. NO. DATE 7-39 Jul 08, 2024 8-10 Jul 03, 2023 7-40 Jul 08, 2024 7-41 Jul 08, 2024 CHAPTER 9 7-42 Jul 08, 2024 Jul 03, 2023...
  • Page 9 AIRCRAFT MAINTENANCE MANUAL STEMME S10, VARIANT S12 PAGE APPROVED AM. NO. DATE PAGE APPROVED AM. NO. DATE D-10 Jul 03, 2023 F-13 Jul 03, 2023 D-11 Jul 03, 2023 F-14 Jul 03, 2023 D-12 Jul 03, 2023 D-13 Jul 03, 2023...
  • Page 10 AIRCRAFT MAINTENANCE MANUAL STEMME S10, VARIANT S12 PAGE APPROVED AM. NO. DATE PAGE APPROVED AM. NO. DATE G5.2.-4 Jul 03, 2023 G10.1.-17 Jul 03, 2023 G5.2.-5 Jul 03, 2023 G10.1.-18 Jul 03, 2023 G5.2.-6 Jul 03, 2023 G10.1.-19 Jul 03, 2023 G5.2.-7...
  • Page 11 AIRCRAFT MAINTENANCE MANUAL STEMME S10, VARIANT S12 PAGE APPROVED AM. NO. DATE PAGE APPROVED AM. NO. DATE G13.1.-12 Jul 03, 2023 G14.4.-9 Jul 03, 2023 G13.1.-13 Jul 03, 2023 G14.4.-10 Jul 03, 2023 G13.1.-14 Jul 03, 2023 G14.4.-11 Jul 03, 2023 G14.1.-1...
  • Page 12 AIRCRAFT MAINTENANCE MANUAL STEMME S10, VARIANT S12 PAGE APPROVED AM. NO. DATE G16.3.-2 Jul 03, 2023 G17.1.-1 Jul 03, 2023 G17.1.-2 Jul 03, 2023 G17.1.-3 Jul 03, 2023 G17.1.-4 Jul 03, 2023 G17.1.-5 Jul 03, 2023 G17.1.-6 Jul 03, 2023 G17.1.-7...

  • Page 13: Table Of Contents

    AIRCRAFT MAINTENANCE MANUAL STEMME S10, VARIANT S12 CONTENTS MANUAL CONTENTS Record of Amendments................0-3 List of Effective Pages .................. 0-9 Contents....................0-17 General....................... 1-1 Remarks on maintenance................1-1 Conversion Table................... 1-3 Abbreviations....................1-4 Safety symbols.
  • Page 14 AIRCRAFT MAINTENANCE MANUAL STEMME S10, VARIANT S12 3.4.6.4 Electrical Layout and Operation of the Fuel Pumps...........3-21 3.4.7 Engine Controls and Instrumentation............. 3-23 3.4.8 Fire Protection.................... 3-23 3.4.9 Engine Cowlings..................3-24 3.4.10 Propeller....................3-24 3.4.11 Power Transmission..................3-25 3.4.12...
  • Page 15 AIRCRAFT MAINTENANCE MANUAL STEMME S10, VARIANT S12 3.7.9.1 Engine System Distribution Box (Effectivity S/N 12-001 - S/N 12-025)....3-50 3.7.9.2 Engine System Distribution Box (Effectivity S/N 12-026 - S/N 12-999)....3-51 3.7.10 TCU Board....................3-53 3.7.11 Instrument Panel Bus System................ 3-54 3.7.12...
  • Page 16 AIRCRAFT MAINTENANCE MANUAL STEMME S10, VARIANT S12 3.7.21.2 Parts Specification..................3-62 COM and NAV Equipment................3-63 3.8.1 COM Equipment..................3-63 3.8.2 ATC Equipment................... 3-63 3.8.3 TAS Equipment................... 3-63 3.8.4 Emergency Locator Equipment..............3-63 3.8.5 Soaring Computer Equipment.
  • Page 17 AIRCRAFT MAINTENANCE MANUAL STEMME S10, VARIANT S12 5.4.15 Propeller....................5-32 5.4.16 Drive Shaft with Propeller Reduction Gear............5-32 5.4.17 Main Landing Gear..................5-33 5.4.18 Tail Wheel....................5-34 5.4.19 Flight Instrumentation and Pitot / Static Systems..........5-35 5.4.20...
  • Page 18 AIRCRAFT MAINTENANCE MANUAL STEMME S10, VARIANT S12 7.1.1.2 Drainage and Ventilation Holes............... 7-1 7.1.1.3 Wing Fittings....................7-1 7.1.1.4 Flaps and Ailerons..................7-2 7.1.2 Fuselage......................7-3 7.1.2.1 Cracks and Structural Damage...............7-3 7.1.2.2 Drainage Holes.....................7-3 7.1.2.3 Nose-cone....................7-3 7.1.2.4...
  • Page 19 AIRCRAFT MAINTENANCE MANUAL STEMME S10, VARIANT S12 7.4.1.13 Check of V-Belt Tension................7-17 7.4.1.14 Replacement of Spark Plugs................7-17 7.4.1.15 Checking of Spark Plug Connector..............7-17 7.4.1.16 Check of Compression................. 7-18 7.4.1.17 Test Run of Engine..................7-18 7.4.1.18 Inspection of Engine Mountings.
  • Page 20 AIRCRAFT MAINTENANCE MANUAL STEMME S10, VARIANT S12 7.5.1.5 Refilling and Bleeding of the Wheel Brake System..........7-40 7.5.1.6 Replacement of Brake Lining................ 7-41 7.5.1.7 Removal and Installation of Landing Gear Legs..........7-42 7.5.2 Tail Wheel....................7-42 Flight Control Instruments and Pitot and Static Pressure System.

  • Page 21: General

    GENERAL REMARKS ON MAINTENANCE The legal owner or operator of the STEMME S12 is obliged to ensure that the maintenance of the aircraft follows the instructions of this manual in accordance with applicable national laws and regulations. Among others, these include: •...
  • Page 22 AIRCRAFT MAINTENANCE MANUAL STEMME S10, VARIANT S12 NOTICE Check the applicable manufacturer's web page for the latest approved revision of the relevant documents. In example for Stemme-documents: www.stemme.com; for ROTAX-documents: www.flyrotax.com, etc. The amount and kind of maintenance work depend on the aircraft utilization, the climate, airfield conditions, storage facilities and other factors, irrespective of the periodic checks.

  • Page 23: Airworthiness Limitations Section

    AIRWORTHINESS LIMITATIONS SECTION These revisions to chapter »4 Airworthiness Limitations«, up to and including this revision, is EASA approved. The current revision applies to all U.S.-registered STEMME S12 aircraft. NOTICE Violation of time limits as defined in chapter »4« may impair proper function of the aircraft and/ or aircraft systems.

  • Page 24: Airframe, Primary And Secondary Structure

    Compliance with the specified times and intervals is mandatory for maintaining continuing airworthiness of the aircraft. For airworthiness limitations of other parts installed in the aircraft not designed by STEMME or with separate TC refer to chapter »5« and respective manufacturer documentation as amended from time to time.

  • Page 25: Pre-Flight Inspections

    AIRCRAFT MAINTENANCE MANUAL STEMME S10, VARIANT S12 PRE-FLIGHT INSPECTIONS Procedures for rigging, fueling, daily inspection and pre-flight inspection are defined in the S12 Aircraft Flight Manual. 5.2.1 RUBBER HOSE AND CLAMP INTEGRITY To ensure that liquids remain safely contained during engine operation and during engine-off flight, the outward appearance and surface condition of all rubber hoses must be visually and manually inspected.

  • Page 26: Inspection Intervals

    AIRCRAFT MAINTENANCE MANUAL STEMME S10, VARIANT S12 5.3.1 INSPECTION INTERVALS The reasonable intervals for general maintenance depend on operating conditions, climate, han- garage, etc. The types and intervals of the minimum scheduled maintenance established for the S12 are indicated in the table below.

  • Page 27: Engine

    AIRCRAFT MAINTENANCE MANUAL STEMME S10, VARIANT S12 This means that: • A 100 engine hours inspection shall be done every 100 hours of engine operation; • A 100 engine hours inspection shall be done every 200 hours of engine operation; plus additional 200 engine hours checks: - Check spark plug connectors for tight fit;...

  • Page 28: General Remarks On Periodic Inspections

    In addition, special inspections may be prescribed by the responsible authority or may be recom- mended by the manufacturer; those inspections must be performed as required in accordance with the issued directives and the Federal Aviation Regulations that apply to N-registered STEMME aircraft.

  • Page 29: Check List For Periodic Inspections

    AIRCRAFT MAINTENANCE MANUAL STEMME S10, VARIANT S12 CHECK LIST FOR PERIODIC INSPECTIONS WARNING Switch OFF Master-Switch and Ignition for any maintenance work! NOTICE Read maintenance instructions in sections »6« and »7« before carrying out adjustments! Additionally to maintenance instructions, these sections indicate special maintenance intervals (2 years) allowable for some items of the Annual inspection program in the following check list.

  • Page 30: General

    AIRCRAFT MAINTENANCE MANUAL STEMME S10, VARIANT S12 5.4.1 GENERAL Refer to Type and Subject of Inspection Sign-off Section 1. Check all applicable Air- worthiness Directives are complied with. If necessary perform these and record 2. Check the applicability of manufacturers Service Bulletins and Service In- structions.

  • Page 31: Wings And Fuel System Components In The Wing Center Section

    AIRCRAFT MAINTENANCE MANUAL STEMME S10, VARIANT S12 5.4.2 WINGS AND FUEL SYSTEM COMPONENTS IN THE WING CENTER SECTION Refer to Type and Subject of Inspection Sign-off Section 1. Check fuel system com- ponents at spar bridge of 7.4.6 wing center section.

  • Page 32: Forward Fuselage

    AIRCRAFT MAINTENANCE MANUAL STEMME S10, VARIANT S12 Refer to Type and Subject of Inspection Sign-off Section 11. Check all control rods and supports in wing center section and wing attach- 7.3.1 ment area, check secure fastening of spring bolt of each quick-connector.

  • Page 33: Cockpit

    AIRCRAFT MAINTENANCE MANUAL STEMME S10, VARIANT S12 5.4.4 COCKPIT Refer to Type and Subject of Inspection Sign-off Section 1. Inspect canopy for dam- age and proper function of locking mechanism, grease canopy locks. Check tension of the metal wire 7.2.1 rope in locking mechanism.

  • Page 34: Center Fuselage (Except For Fairings)

    AIRCRAFT MAINTENANCE MANUAL STEMME S10, VARIANT S12 Refer to Type and Subject of Inspection Sign-off Section 10. Visual: Ceck condition of avionic display 11. Check cockpit 7.2.2 ventilation flexible hoses. 12. Check rudder pedals and 7.3.1 cables. 13. Check condition, attach- ment and adjustment 7.2.2...

  • Page 35: Tail Boom

    AIRCRAFT MAINTENANCE MANUAL STEMME S10, VARIANT S12 Refer to Type and Subject of Inspection Sign-off Section 6. Check flap relief gas spring assy. for proper condition 7.3.1 and tight fit. 5.4.6 TAIL BOOM Refer to Type and Subject of Inspection...
  • Page 36 AIRCRAFT MAINTENANCE MANUAL STEMME S10, VARIANT S12 Refer to Type and Subject of Inspection Sign-off Section 4. Check free movement of rudder, especially in case of 7.3.1 tail wheel blockage. 5. Check front fitting of hor- izontal stabilizer for spring tension, backlash of bolt, 7.3.1...

  • Page 37: Fuel System Components In The Fuselage

    AIRCRAFT MAINTENANCE MANUAL STEMME S10, VARIANT S12 5.4.8 FUEL SYSTEM COMPONENTS IN THE FUSELAGE Refer to Type and Subject of Inspection Sign-off Section 1. Check quick-release cou- 7.4.6 pling in fuel supply line. 2. Check condition of supply, return and drain lines out- side the engine compart- 7.4.6...

  • Page 38: Engine And Engine Mountings

    AIRCRAFT MAINTENANCE MANUAL STEMME S10, VARIANT S12 5.4.9 ENGINE AND ENGINE MOUNTINGS (1) - use of leaded fuel more than 30% of operation Refer to Type and Subject of Inspection Sign-off Section 1. Engine cleaning. 7.4.1.3 2. Visual inspection of engine 7.4.1.4...
  • Page 39 AIRCRAFT MAINTENANCE MANUAL STEMME S10, VARIANT S12 Refer to Type and Subject of Inspection Sign-off Section 15. Check condition of fuel lines, pressure connection lines and compensating 7.4.6.2 tube assy. at carburetors and air box. 16. Check engine wiring and 7.4.1.12...

  • Page 40: Lubrication System

    AIRCRAFT MAINTENANCE MANUAL STEMME S10, VARIANT S12 Refer to Type and Subject of Inspection Sign-off Section 24. Check condition of ex- haust headers for crack formation and uncharac- teristic gunpowder burns 7.4.5.2 (leaks); (incl. attachment and springs). 25. Check heat insulation (exhaust headers, muffler, 7.4.5.3...

  • Page 41: Cooling System

    AIRCRAFT MAINTENANCE MANUAL STEMME S10, VARIANT S12 Refer to Type and Subject of Inspection Sign-off Section 6. Remove old oil filter from the engine. Install a new oil 7.4.2.4 filter. 7. Cut old oil filter without producing any metal chips...

  • Page 42: Air Induction System

    AIRCRAFT MAINTENANCE MANUAL STEMME S10, VARIANT S12 Refer to Type and Subject of Inspection Sign-off Section 4. Flushing the cooling system – When replacing 7.4.3 the coolant. 5. Check ram air cooling assy. (plenum) of cylinder bar- 7.4.3 rels. 5.4.12...

  • Page 43: Center Fuselage Fairing, Engine Cowlings And Firewall

    AIRCRAFT MAINTENANCE MANUAL STEMME S10, VARIANT S12 Refer to Type and Subject of Inspection Sign-off Section 4. Check ignition lock short- ing cables (aft firewall, 7.4.7 lower LH side) 5. Check function of ignition 7.4.7 retarder module. 6. Operational check of 7.4.7...

  • Page 44: Propeller

    AIRCRAFT MAINTENANCE MANUAL STEMME S10, VARIANT S12 5.4.15 PROPELLER For the scheduled maintenance tasks of the Variable Pitch Propeller Stemme P/N 11AP-V refer to the latest revision of the Component Maintenance Manual - Variable Pitch Propeller (Stemme Doc.-No.: P500-912860). 5.4.16...

  • Page 45: Main Landing Gear

    AIRCRAFT MAINTENANCE MANUAL STEMME S10, VARIANT S12 Refer to Type and Subject of Inspection Sign-off Section 12. Change oil of propeller 7.4.12 reduction gear. 5.4.17 MAIN LANDING GEAR Refer to Type and Subject of Inspection Sign-off Section 1. Inspect the main landing...

  • Page 46: Tail Wheel

    AIRCRAFT MAINTENANCE MANUAL STEMME S10, VARIANT S12 Refer to Type and Subject of Inspection Sign-off Section 11. Check condition of gear doors. Clean and grease 7.5.1 hinges of gear doors. 12. Check free movement of doors and actuating mech- anism, including Bowden 7.5.1...

  • Page 47: Flight Instrumentation And Pitot / Static Systems

    AIRCRAFT MAINTENANCE MANUAL STEMME S10, VARIANT S12 Refer to Type and Subject of Inspection Sign-off Section 5. Check spring coupling assy. between tail wheel and 7.5.2 rudder. 5.4.19 FLIGHT INSTRUMENTATION AND PITOT / STATIC SYSTEMS Refer to Type and Subject of Inspection...

  • Page 48: Avionics

    AIRCRAFT MAINTENANCE MANUAL STEMME S10, VARIANT S12 5.4.21 AVIONICS Refer to Type and Subject of Inspection Sign-off Section 1. Check each installed an- tenna. 2. Operational: Check COM equipment 3. Functional: Check ATC equipment 4. Operational: Check TAS equipment 5. Operational: Check emergency locator 6.

  • Page 49: Optional Equipment

    AIRCRAFT MAINTENANCE MANUAL STEMME S10, VARIANT S12 5.4.23 OPTIONAL EQUIPMENT WING FOLDING DEVICE The wing folding device itself is maintenance-free. The sliding surfaces should not be lubricated in order to avoid sticking of dirt, which could result in the formation of marks on the swivel arm and thus to wear.

  • Page 50: Oxygen Equipment

    AIRCRAFT MAINTENANCE MANUAL STEMME S10, VARIANT S12 OXYGEN EQUIPMENT Refer to Type and Subject of Inspection Sign-off Section 1. Check oxygen equipment if installed. Apply the maintenance instructions of the system manufacturer. (Refer to Annex A) MAIN SYSTEM BATTERY Refer to...

  • Page 51: Special Inspections

    »5.4.16« (as far as applicable). 3. After the propeller blades have been repaired or replaced, the drive system must be dynam- ically balanced, as laid down in A17-10AP-V/2-E »Dynamic Propeller Balancing STEMME S10« (see Aircraft Maintenance Manual Annex A).

  • Page 52: Inspection Following Exceptional Events With Wing Folding Device

    AIRCRAFT MAINTENANCE MANUAL STEMME S10, VARIANT S12 5.5.3 INSPECTION FOLLOWING EXCEPTIONAL EVENTS WITH WING FOLDING DEVICE Collision of the spar stub of the outboard wing with an obstacle during taxiing or maneuvering in the hangar with the outboard wings folded: •...

  • Page 53: Approval Of Software Levels Of Autopilot Systems

    AIRCRAFT MAINTENANCE MANUAL STEMME S10, VARIANT S12 5.5.4 APPROVAL OF SOFTWARE LEVELS OF AUTOPILOT SYSTEMS This sub-chapter is only applicable for aircrafts with an installed automatic pilot system. Firmware related to the function of automatic pilot systems must be approved by the aircraft’s TC holder.

  • Page 54: Lubrication Ignition-Starter-Switch

    Inspection and Lubrication of the Ignition-Starter-Switch after 2000h of operation. The modification of the wiring in the starter circuit is not applicable for the Stemme S12. The maintenance task will be taken over for the Stemme S12.

  • Page 55: Unscheduled Maintenance

    (e.g. EASA / FAA). Such notices typically include a deadline to complete the required actions. Compliance with Airworthiness Directives is mandatory. STEMME strongly recommends that owners and operators, as a matter of prudence and flight safety, fully and promptly comply with all relevant Service Bulletins (except Service Bulletins classified as “optional”).

  • Page 56: Abnormal Operations

    AIRCRAFT MAINTENANCE MANUAL STEMME S10, VARIANT S12 5.6.3 ABNORMAL OPERATIONS Abnormal airplane operations require special maintenance checks. Unscheduled checks following overweight or hard landings, over-speed flight, severe air turbulence, lightning strike, foreign-ob- ject damage, and high drag or side loads due to ground handling should be performed by an authorized maintenance person.
  • Page 57 AIRCRAFT MAINTENANCE MANUAL STEMME S10, VARIANT S12 NON-STANDARD TIGHTENING TORQUES INCLUDE THE FOLLOWING (FOR EXAMPLE) Item Designation Loctite Tightening Torque [Nm] [lbf ft] M8 connecting clutch and propeller without flange of the engine. M10 connecting clutch and flexible disk 25.8 (drive shaft).
  • Page 58 AIRCRAFT MAINTENANCE MANUAL STEMME S10, VARIANT S12 THIS PAGE IS INTENTIONALLY LEFT BLANK PAGE 6-16 AMENDMENT: -- DOCUMENT NUMBER: DATE: -- L500-912820 ISSUE JUL 03, 2023...

  • Page 59: Engine

    STEMME as well as by authorized distributors and service centers approved by ROTAX. (Refer to: www.flyrotax.com). Service of modified components are carried out by STEMME only, as well as delivery of modified spare parts. For identification of components affected by the modifications and in any case of doubt it is...

  • Page 60: Removal And Installation Of The Engine

    AIRCRAFT MAINTENANCE MANUAL STEMME S10, VARIANT S12 7.4.1.2 REMOVAL AND INSTALLATION OF THE ENGINE Removal • Disconnect battery. • Remove fire wall sheets. • Remove V-supports of the steel frame below the engine. • Loosen clutch on engine side and push it forward on the sliding joint.

  • Page 61: Leakage Check

    Information provided by the »Maintenance Manual (Line Maintenance) for ROTAX Engine Type 914 Series« will remain valid in an analogous sense. Spare parts for the modified waste-gate-control can only be supplied by STEMME. a) Check the components In particular make sure that the whole waste-gate-control (cable, waste-gate including the swiveling lever (1)) moves smoothly and easily.

  • Page 62: Check Of Friction Torque

    AIRCRAFT MAINTENANCE MANUAL STEMME S10, VARIANT S12 Figure 7.4.1.7a Check of Waste Gate 7.4.1.8 CHECK OF FRICTION TORQUE See »Maintenance Manual (Line Maintenance) for ROTAX Engine Type 914 Series«, section »12-20-00«, (Annex E). NOTICE The friction torque can be determined only at the propeller flange of the engine - Rotax original values (between 30 Nm and max.

  • Page 63: Check Of The Carburetor

    AIRCRAFT MAINTENANCE MANUAL STEMME S10, VARIANT S12 7.4.1.11 CHECK OF THE CARBURETOR To access the right carburetor, it will be necessary to dismount and raise the oil cooler. Visually check carburetor assy.: Check for proper installation, general condition and secure attachment of the carburetor assy.

  • Page 64: Check Of Compression

    According to the »Maintenance Manual (Line Maintenance) for ROTAX Engine Type 914 Series«, the check of compression follows the pressure difference method. The freewheel-clutch can be blocked by a locking pin (Stemme P/N: 500169) for turning/holding the engine by the propeller to perform this method.

  • Page 65: Lubrication System

    AIRCRAFT MAINTENANCE MANUAL STEMME S10, VARIANT S12 7.4.2 LUBRICATION SYSTEM System Description : See section »3.4.2« 7.4.2.1 VISUAL AND LEAKAGE CHECK OF OIL SYSTEM (Oil tank, oil cooler, oil lines.) • Check oil tank, oil cooler and lines for leakage.

  • Page 66: Oil Filter - Replacement And Inspection

    AIRCRAFT MAINTENANCE MANUAL STEMME S10, VARIANT S12 Oil specification : See section »3.4.14.3« See also »Maintenance Manual (Line Maintenance) for ROTAX Engine Type 914 Series« (Annex E) and »Operating Manual for ROTAX Engine Type 914 Series«. CAUTION If the engine is operated with AVGAS, do not use fully synthetic motor oil.

  • Page 67: Cooling System

    AIRCRAFT MAINTENANCE MANUAL STEMME S10, VARIANT S12 7.4.3 COOLING SYSTEM System Description : See section »3.4.3« 7.4.3.1 VISUAL AND LEAKAGE CHECK OF THE SYSTEM (Radiator, expansion reservoir, refill container, overflow container and coolant lines.) • Check radiator, expansion reservoir, refill container and overflow container for condition, attachment and leakage.

  • Page 68: Coolant Replacement

    AIRCRAFT MAINTENANCE MANUAL STEMME S10, VARIANT S12 7.4.3.3 COOLANT REPLACEMENT Additionally to instructions of »Maintenance Manual (Line Maintenance) for ROTAX Engine Type 914 Series«: To drain the entire liquid cooling system, open the two valves installed in aluminum tubes below the engine. To improve ventilation during refilling of new coolant, loosen bleed screw on expansion reservoir on engine.

  • Page 69: Exhaust System

    AIRCRAFT MAINTENANCE MANUAL STEMME S10, VARIANT S12 7.4.5 EXHAUST SYSTEM System description : See section »3.4.5« 7.4.5.1 TURBOCHARGER / MUFFLER MOUNTINGS • Check tight fit of screw connections of the mounting struts, on engine housing and turbocharger/muffler side, and tight fit of turbine-compressor and turbine-muffler screw connections.
  • Page 70 AIRCRAFT MAINTENANCE MANUAL STEMME S10, VARIANT S12 REPLACEMENT OF HEAT INSULATION TAPE Heat insulation tape specification: See section »3.4.5«, available from STEMME: • Remove spring clamps and insulation tape. • Fix beginning of new tape by means of a suitable glue.

  • Page 71: Fuel System

    AIRCRAFT MAINTENANCE MANUAL STEMME S10, VARIANT S12 7.4.6 FUEL SYSTEM System description : See section »3.4.6« Fuels : See section »3.4.14.1« FUEL LINES, GENERAL The condition of the flexible fuel lines of the entire fuel system must be checked and the flexible lines must be replaced if required according to section »4«...

  • Page 72: Fuel System Of The Fuselage

    • Loosen clamps of fuel lines and remove filters in LH and RH wing. • Install new filter using clamps of original. type (Spare parts available from STEMME.) Re-assemble the package after the planned maintenance the package in reverse order.
  • Page 73 AIRCRAFT MAINTENANCE MANUAL STEMME S10, VARIANT S12 FUNCTION CHECK OF FUEL PUMPS Perform this function check with wings installed some fuel in both wing tanks, and feeder tank partly drained (drain feeder tank until low fuel warning is ON): • Switch master switch on, open and lock nose-cone, switch fuel selector switch to positions “LEFT”, “BOTH”...

  • Page 74: Engine Controls / Monitoring

    AIRCRAFT MAINTENANCE MANUAL STEMME S10, VARIANT S12 • In case of malfunction of float switch replace float switch with sealing ring. NOTICE Tighten float switch in the feeder tank with max. 1.5Nm (see 6.8) until the switch can not be rotated by hand.
  • Page 75 AIRCRAFT MAINTENANCE MANUAL STEMME S10, VARIANT S12 CHECK OF TCU AND WASTEGATE SERVO • Check condition, attachment and wiring of the TCU. • Check pressure hoses (observe section »5.2.4«). • Check condition of the wastegate servo assembly. • Check condition of the bowden-cable driving the waste-gate.

  • Page 76: Fire Protection

    AIRCRAFT MAINTENANCE MANUAL STEMME S10, VARIANT S12 To perform the following check, remove instrument panel cover. The module is mounted on the electronics / CB plate on the RH side of the panel. Correct function can be examined by means of two LED´s mounted on the circuit board, visible through an opening in the module housing.

  • Page 77: Firewall

    AIRCRAFT MAINTENANCE MANUAL STEMME S10, VARIANT S12 7.4.8.3 FIREWALL • Check condition (deformation, cracks) of firewall sheets, their connection to each other and to the center steel frame. • Check sheathing edges and renew if required. Look for chafing from firewall edges on fuselage steel frame, cables, hoses etc.

  • Page 78: Propeller

    30 ± 5 mm / 1.2 ± 0.2 in 7.4.10 PROPELLER For Maintenance Instructions, Tolerances and Adjustment Data for the Variable Pitch Propeller Stemme P/N 11AP-V refer to the latest revision of the Component Maintenance Manual - Variable Pitch Propeller (Stemme Doc.-No.: P500-912860). 7.4.11 DRIVE SHAFT SYSTEM System description: See section »3.4.11«...
  • Page 79 AIRCRAFT MAINTENANCE MANUAL STEMME S10, VARIANT S12 CHECK OF CARDANIC RUBBER DISC JOINTS • Check condition (cracks and embrittlement of rubber) and tight screw connections of cardanic rubber disc joints on freewheel clutch and on forward drive shaft. To inspect rubber discs for cracks and embrittlement, apply a torsional load on the discs and observe rubber surface.

  • Page 80: Propeller Gearbox, Mounting And Support

    AIRCRAFT MAINTENANCE MANUAL STEMME S10, VARIANT S12 7.4.12 PROPELLER GEARBOX, MOUNTING AND SUPPORT System Description: See section »3.4.12« CHECK OF PROPELLER GEAR ASSY. With front gear installed • Check noise and internal backlash of propeller reduction gearbox by rotating propeller unit clock- and counter clock- wise.

  • Page 81: Propeller Operation

    AIRCRAFT MAINTENANCE MANUAL STEMME S10, VARIANT S12 PROPELLER GEARBOX OIL CHANGE To change oil completely suck out used oil by means of a flexible bottle or syringe with tube via thread opening of magnetic screw. Refill new oil through same opening to max marking of inspection glass, again with the tail cone supported in flight attitude.

  • Page 82: Landing Gear

    AIRCRAFT MAINTENANCE MANUAL STEMME S10, VARIANT S12 LANDING GEAR 7.5.1 MAIN LANDING GEAR Description: See section »3.5.1« Adjustment data: See figure »3.5.1.a« Lubrication: See section »6.5« 7.5.1.1 GENERAL LANDING GEAR ASSY. • Check condition of landing gear legs and trailing links (cracks in paint indicate overloads;...

  • Page 83: Brake Fluid

    AIRCRAFT MAINTENANCE MANUAL STEMME S10, VARIANT S12 BRAKE FLUID To check brake fluid level see the brake fluid reservoir in the main landing gear bay. The brake fluid level must be between min. and max. marking. Refill if required. WARNING A rapid reduction of the brake fluid level indicates leakage of the system and must be investigated and eliminated before the aircraft returns to service.
  • Page 84 AIRCRAFT MAINTENANCE MANUAL STEMME S10, VARIANT S12 • Retraction of right landing gear leg: (independent from the left leg - for this purpose,first actuate left stop switch »retracted«, then disconnect the arm linking the operating cable to the left LG door - take care that the cable and arm do not jam as the right leg is retracted).

  • Page 85: Functional Check Of Emergency Undercarriage Extension

    AIRCRAFT MAINTENANCE MANUAL STEMME S10, VARIANT S12 7.5.1.3 FUNCTIONAL CHECK OF EMERGENCY UNDERCARRIAGE EXTENSION • Support the aircraft and landing gear up. • Landing gear switch “NEUTRAL”. • Actuate the EMERGENCY-UNDERCARRIAGE handles (in sequence 1-2). Actuating force is 100 - 200 N / 22.5 to 45 lbf. The landing gear legs must remain in the extended position (function of spring clips on the over-center struts).

  • Page 86: Tires, Condition And Inflation Pressure

    AIRCRAFT MAINTENANCE MANUAL STEMME S10, VARIANT S12 7.5.1.4 TIRES, CONDITION AND INFLATION PRESSURE The tires must be replaced at the latest, if the treads are worn thin. Pay attention to the slip marks rim/tire. Apply Loctite (metal glue) to the attachment screws on the wheel axles.

  • Page 87: Replacement Of Brake Lining

    While continually adding brake fluid to the brake fluid reservoir by using the refill-adapt- er (Stemme P/N: 00FO-B17) as required; pump the brake fluid through the hydraulic brake system by operation of the RH brake lever until the brake fluid passing through the transparent flexible hose at the bleed valve of the LH brake caliper is free of bubbles.

  • Page 88: Removal And Installation Of Landing Gear Legs

    AIRCRAFT MAINTENANCE MANUAL STEMME S10, VARIANT S12 7.5.1.7 REMOVAL AND INSTALLATION OF LANDING GEAR LEGS • Loosen all attachments to the frame. • Remove locking screws in front of the main bearings. • Push the bearing bolts out to the front and to the rear, respectively.

  • Page 89: Flight Control Instruments And Pitot And Static Pressure System

    AIRCRAFT MAINTENANCE MANUAL STEMME S10, VARIANT S12 FLIGHT CONTROL INSTRUMENTS AND PITOT AND STATIC PRESSURE SYSTEM Description: See section »3.6« Perform maintenance of the flight instruments according to instructions given by the manufacturer concerned. (Manufacturer documents see Annex A). NOTICE If equipment is changed, the instructions in section »3.8«...

  • Page 90: Electrical System

    AIRCRAFT MAINTENANCE MANUAL STEMME S10, VARIANT S12 ELECTRICAL SYSTEM Description: See section »3.7« and »Maintenance Manual (Line Maintenance) for ROTAX Engine Type 914 Series« (Annex E). 7.7.1 GENERAL • Check wiring of entire electric system (observe section »5.2.4«). Specially check cable routing for sufficient supports, for chafing in the area of penetrations of cable (e.

  • Page 91: Grounding

    AIRCRAFT MAINTENANCE MANUAL STEMME S10, VARIANT S12 WARNING If battery energy is not required for test purposes during any maintenance on the electrical system, the negative connection to the battery should be disconnected. To remove the battery, disconnect the negative cable first. To install the battery, connect the positive cable first, then connect the negative.
  • Page 92 AIRCRAFT MAINTENANCE MANUAL STEMME S10, VARIANT S12 • Reassemble the switch, using new parts if required. Position the springs and triangular cups so that there is no binding between the cups and the triangular cavities in the switch body. Secure the terminal board assembly to the switch body with the two screws and retaining washers.
  • Page 93 AIRCRAFT MAINTENANCE MANUAL STEMME S10, VARIANT S12 ANNEX G: WIRING DIAGRAMS This section provides the wiring diagrams relevant for maintenance. NOTICE The pages-ID consists of the annex index and the eqaul detail number in the following table seperated by dash to the number of pages within the detail.
  • Page 94 AIRCRAFT MAINTENANCE MANUAL STEMME S10, VARIANT S12 DETAIL DIAGRAM STEMME P/N EFFECTIVITY S/N 12-029 - S12 Main System - S/N 12-037 5.2.3 P308-124930_03 GARMIN DC Generation GARMIN G3X Touch System installed S/N 12-038 - S12 Main System - S/N 12-999 5.2.4...
  • Page 95 AIRCRAFT MAINTENANCE MANUAL STEMME S10, VARIANT S12 DETAIL DIAGRAM STEMME P/N EFFECTIVITY S/N 12-019 - S/N 12-037, 10.1.3 S12 Main System – Lighting (4 pages) P308-124915_05 SB 980025 implemented S/N 12-028 - S/N 12-037, 10.1.4 S12 Main System – Lighting...
  • Page 96 AIRCRAFT MAINTENANCE MANUAL STEMME S10, VARIANT S12 DETAIL DIAGRAM STEMME P/N EFFECTIVITY S12 Main System - 12.1.5 P308-124990_00 S/N 12-031 Communication Radio S12 Main System - 12.1.6 P308-124989_01 S/N 12-033 Communication Radio S12 Main System - 13.1.1 P308 124939_00 S/N 12-022...
  • Page 97 AIRCRAFT MAINTENANCE MANUAL STEMME S10, VARIANT S12 DETAIL DIAGRAM STEMME P/N EFFECTIVITY S12 Transponder and Traffic Display - 14.1.5 P308-124987_00 S/N 12-039 Ultimate Europe S/N 12-051 - S/N 12-999 NO US transponder S12 Transponder and Traffic Display - 14.1.6 P308-124917_07...
  • Page 98 AIRCRAFT MAINTENANCE MANUAL STEMME S10, VARIANT S12 DETAIL DIAGRAM STEMME P/N EFFECTIVITY S/N 12-038 - S/N 12-050 S12 Transponder and Traffic Display - Garmin G3X Touch 14.3.3 P308-124937_04 Garmin G3X Europe System installed NO SXM antenna installed S/N 12-051 -...
  • Page 99 AIRCRAFT MAINTENANCE MANUAL STEMME S10, VARIANT S12 DETAIL DIAGRAM STEMME P/N EFFECTIVITY S/N 12-038 - S/N 12-050 Garmin G3X Touch System installed S12 Transponder and Traffic Display - SXM antenna 14.4.5 P308-124938_05 Garmin G3X USA installed SB 980063 implemented; S/N 12-051 -...
  • Page 100 AIRCRAFT MAINTENANCE MANUAL STEMME S10, VARIANT S12 DETAIL DIAGRAM STEMME P/N EFFECTIVITY S/N 12-030 - S12 Engine System - GARMIN S/N 12-037 15.2.2 P308-124940_02 DC Generation Garmin G3X Touch System installed S/N 12-038 - S12 Engine System - GARMIN S/N 12-999 15.2.3...

  • Page 101: Aircraft

    AIRCRAFT MAINTENANCE MANUAL STEMME S10, VARIANT S12 5.1.6. S12 MAIN SYSTEM - DC GENERATION FIGURE: STEMME P308-124910 REV08 (PAGE 1) EFFECTIVITY Aircraft with S/N 12-039-S/N 12-999 NO GARMIN G3X Touch System installed Second Main Battery installed PAGE G5.1.-11 DOCUMENT NUMBER:...
  • Page 102 AIRCRAFT MAINTENANCE MANUAL STEMME S10, VARIANT S12 THIS PAGE IS INTENTIONALLY LEFT BLANK PAGE G5.1.-12 AMENDMENT: 01 DOCUMENT NUMBER: DATE: JUL 08, 2024 L500-912820 ISSUE JUL 03, 2023...
  • Page 103 AIRCRAFT MAINTENANCE MANUAL STEMME S10, VARIANT S12 5.1.6. S12 MAIN SYSTEM - DC GENERATION FIGURE: STEMME P308-124910 REV08 (PAGE 2) EFFECTIVITY Aircraft with S/N 12-039-S/N 12-999 NO GARMIN G3X Touch System installed Second Main Battery NOT installed PAGE G5.1.-13 DOCUMENT NUMBER:...
  • Page 104 AIRCRAFT MAINTENANCE MANUAL STEMME S10, VARIANT S12 THIS PAGE IS INTENTIONALLY LEFT BLANK PAGE G5.1.-14 AMENDMENT: 01 DOCUMENT NUMBER: DATE: JUL 08, 2024 L500-912820 ISSUE JUL 03, 2023...
  • Page 105 AIRCRAFT MAINTENANCE MANUAL STEMME S10, VARIANT S12 14.1.6. S12 TRANSPONDER AND TRAFFIC DISPLAY - ULTIMATE EUROPE FIGURE: STEMME P308-124917 REV07 EFFECTIVITY Aircraft with S/N 12-051 - 12-999 NO US transponder equipment installed NO Garmin G3X Touch System installed PAGE G14.1.-11...
  • Page 106 AIRCRAFT MAINTENANCE MANUAL STEMME S10, VARIANT S12 THIS PAGE IS INTENTIONALLY LEFT BLANK PAGE G14.1.-12 AMENDMENT: 01 DOCUMENT NUMBER: DATE: JUL 08, 2024 L500-912820 ISSUE JUL 03, 2023...
  • Page 107 AIRCRAFT MAINTENANCE MANUAL STEMME S10, VARIANT S12 14.3.4. S12 TRANSPONDER AND TRAFFIC DISPLAY S12 GARMIN G3X EUROPE FIGURE: STEMME P308-124937 REV06 EFFECTIVITY Aircraft with S/N 12-051 - S/N 12-999 Garmin G3X Touch System installed NO SXM antenna installed PAGE G14.3.-7...
  • Page 108 AIRCRAFT MAINTENANCE MANUAL STEMME S10, VARIANT S12 THIS PAGE IS INTENTIONALLY LEFT BLANK PAGE G14.3.-8 AMENDMENT: 01 DOCUMENT NUMBER: DATE: JUL 08, 2024 L500-912820 ISSUE JUL 03, 2023...
  • Page 109 AIRCRAFT MAINTENANCE MANUAL STEMME S10, VARIANT S12 14.4.5. S12 TRANSPONDER AND TRAFFIC DISPLAY S12 GARMIN G3X USA FIGURE: STEMME P308-124938 REV05 EFFECTIVITY Aircraft with S/N 12-038 - S/N 12-050 Garmin G3X Touch System installed SXM antenna installed after implementation of SB 980063;...
  • Page 110 AIRCRAFT MAINTENANCE MANUAL STEMME S10, VARIANT S12 THIS PAGE IS INTENTIONALLY LEFT BLANK PAGE G14.4.-14 AMENDMENT: 01 DOCUMENT NUMBER: DATE: JUL 08, 2024 L500-912820 ISSUE JUL 03, 2023...

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