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FLUGPLATZSTRASSE F2, NR. 6-7 • GERMANY • 15344 STRAUSBERG FLIGHT MANUAL POWERED SAILPLANE STEMME S10, VARIANT S12 DOCUMENT NUMBER • L400-912810 DATE OF ISSUE • AUGUST 20, 2016 : STEMME S12 AIRFRAME TYPE TYPE CERTIFICATE : EASA.A.054 : 12- SERIAL NUMBER...
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AIRCRAFT FLIGHT MANUAL STEMME S10, VARIANT S12 This aircraft may only be operated in correspondence to the instructions and operating limitations specified in this manual. CONTACT STEMME AG Flugplatzstrasse F2, Nr. 6-7 D-15344 Strausberg Phone: +49.3341.3612-0 E-mail: info@stemme.com Web: www.stemme.com All rights reserved.
AIRCRAFT FLIGHT 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: • Updated weight data, • Changes to the arrangement of instruments on the instrument panel.
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AIRCRAFT FLIGHT MANUAL STEMME S10, VARIANT S12 Removed Inserted Date of Refer- Approval Date Sig- Pages Pages Amend- ence ment Inser- ture tion 0-1, 0-2, 0-1, 0-2, OCT 10, P061- 0-3, 0-4, 0-3, 0-4, 2018 2017-162 0-5, 0-7, 0-5, 0-7,...
AIRCRAFT FLIGHT MANUAL STEMME S10, VARIANT S12 LIST OF EFFECTIVE PAGES This list is valid only for the aircraft serial no. specified on title page. PAGE APPR. DATE PAGE APPR. DATE OCT 10, 2018 CHAPTER 0 OCT 10, 2018 APR 04, 2022...
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AIRCRAFT FLIGHT MANUAL STEMME S10, VARIANT S12 PAGE APPR. DATE PAGE APPR. DATE 2-17 AUG 20, 2016 3-23 AUG 20, 2016 2-18 AUG 20, 2016 3-24 AUG 20, 2016 2-19 AUG 20, 2016 3-25 AUG 20, 2016 2-20 AUG 28, 2017...
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AIRCRAFT FLIGHT MANUAL STEMME S10, VARIANT S12 PAGE APPR. DATE PAGE APPR. DATE 4-11 AUG 20, 2016 4-41 APR 04, 2022 4-12 AUG 20, 2016 4-42 APR 04, 2022 4-13 AUG 20, 2016 4-43 APR 04, 2022 4-14 AUG 20, 2016...
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AIRCRAFT FLIGHT MANUAL STEMME S10, VARIANT S12 PAGE APPR. DATE PAGE APPR. DATE 5-13 AUG 20, 2016 AUG 20, 2016 5-14 AUG 20, 2016 AUG 20, 2016 5-15 AUG 20, 2016 AUG 20, 2016 5-16 AUG 20, 2016 7-10 AUG 20, 2016...
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AIRCRAFT FLIGHT MANUAL STEMME S10, VARIANT S12 3.9.4.4 Yellow Low Fuel Caution Light........3-25 3.9.4.5 Yellow TCU-Caution Light Flashes........3-26 3.9.4.6 Red Battery Charge Warning Light for the External Alternator Illuminated......... 3-27 3.9.4.7 Yellow Caution Light for the internal Generator Illuminated.
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AIRCRAFT FLIGHT MANUAL STEMME S10, VARIANT S12 4.3.5 Wings................. 4-10 4.3.6 Empennage..............4-11 4.3.7 Fuselage..............4-11 Pre-Flight Inspections........... 4-13 4.4.1 Checks Before Entering Cockpit........4-13 4.4.2 Check of Flight Controls and Pressure Probes....4-15 4.4.3 Checks Before Engine Start..........4-16 Normal Operating Procedures and Recommended Airspeeds.
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AIRCRAFT FLIGHT MANUAL STEMME S10, VARIANT S12 • Flaps AS REQUIRED (depending on airspeed) • Throttle SET (max 5500 RPM, recommended 4300 - 5000 RPM) • Fuel selector switch Fuel management as required (right, left, or both tanks) CAUTION The S12 tends to fly slightly right wing low during high speed cruise, due to high engine torque caused by a high power setting, combined with a small rolling moment due to sideslip at high airspeeds.
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AIRCRAFT FLIGHT MANUAL STEMME S10, VARIANT S12 Procedure with less than 50% MCP (Deeper Descent): • Airspeed Reduce by pitching up and slowly reduce engine power to max. 140 kph/ 76 kt • PPC switch T/O or CRUISE AS REQUIRED •...
AIRCRAFT FLIGHT MANUAL STEMME S10, VARIANT S12 4.5.3.3 GLIDING FLIGHT GLIDER CONFIGURATION With the engine stopped, propeller blades folded and nose-cone closed the S12 is a normal glider with flaps. The S12 has good balanced flight characteristics and well harmonized flight controls.
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AIRCRAFT FLIGHT MANUAL STEMME S10, VARIANT S12 SLOW FLIGHT AND STALL BEHAVIOR IN GLIDER CONFIGURATION Gliding and searching for thermals often requires flying at low speed. When flying at mid and forward CG, minimum airspeed should be limited by the aft stop of the elevator and only dynamic stalls (rapid pull-up) should be possible.
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AIRCRAFT FLIGHT MANUAL STEMME S10, VARIANT S12 4.5.3.4 CHANGE OF AIRCRAFT CONFIGURATIONS (POWERED , GLIDING FLIGHT) CHANGE FROM POWERED TO GLIDER CONFIGURATION • PPC switch • Throttle IDLE • Air speed REDUCE to approx. 100 kph / 54 kt • Cowl flaps...
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AIRCRAFT FLIGHT MANUAL STEMME S10, VARIANT S12 CAUTION To avoid excessive wear of the centrifugal clutch, avoid extended periods of propeller windmilling with engine not running. • Propeller positioning PULL handle very slowly and smoothly to its stop. NOTICE If the handle is pulled too fast, the propeller unit will turn over neutral position and cause structural damage to the propeller and/or nose-cone.
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AIRCRAFT FLIGHT MANUAL STEMME S10, VARIANT S12 NOTICE When closing and locking nose-cone, all engine and electrical instruments except for comm radio, soaring computer and variometer are switched off by the electrical logic. CAUTION Operate only minimum essential electric or electronic equipment when soaring for extended periods.
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AIRCRAFT FLIGHT MANUAL STEMME S10, VARIANT S12 WARNING If OAT is extremely low, i.e. at high altitudes or in cold areas, battery capacity after longer soaring time might be too low for engine restart. Successful engine restart might only be possible at higher temperatures and lower altitudes.
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AIRCRAFT FLIGHT MANUAL STEMME S10, VARIANT S12 CAUTION If the drive system was not operated for > 5 minutes, propeller blades are in T/O-position regardless of actual switch position. If switch is in cruise position, the pitch control mechanism begins to change the propeller pitch when the engine starts.
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AIRCRAFT FLIGHT MANUAL STEMME S10, VARIANT S12 • Fuel selector switch Fuel management as required (right, left, or both tanks). • Warning and caution lights • EXT ALT • Electrical systems ON as required • Choke OFF with increasing engine temperature (1-2 minutes should be sufficient).
AIRCRAFT FLIGHT MANUAL STEMME S10, VARIANT S12 4.5.3.5 FLYING IN STRONG TURBULENCE When encountering areas with strong turbulence or crossing strong thermals airspeed must be reduced to below V = 180 kph / 97 kt. 4.5.3.6 COLD WEATHER OPERATION Before operating the aircraft in cold areas, an inspection is recommended.
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AIRCRAFT FLIGHT MANUAL STEMME S10, VARIANT S12 4.5.4 APPROACH Landing can be done either in gliding or in powered configuration. WARNING Before landing ensure parking brake lever is in the OFF position. A landing with parking brake set ON results in uncontrollable braking and,in the worst case, in locking of the wheels.
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AIRCRAFT FLIGHT MANUAL STEMME S10, VARIANT S12 CAUTION During gear extension the two landing gear lights flash RED (right first, then left). In case of no indication after selecting landing gear switch down, check CB (left side of switch) and reset if necessary.
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AIRCRAFT FLIGHT MANUAL STEMME S10, VARIANT S12 CAUTION If propeller T/O-position is not indicated within an adequate time (max 5 minutes) by green light, propeller pitch position can be checked as follows: • Airspeed 110 kph / 59 kt • Throttle...
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AIRCRAFT FLIGHT MANUAL STEMME S10, VARIANT S12 CAUTION During gear extension the two landing gear lights flash RED (right first, then left). In case of lacking indication after selecting landing gear switch down, check CB (left side of switch) and reset if necessary. If both indicator lights are not on and green after max 45 seconds, perform emergency gear extension (refer to section »3.9.4.19«).
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AIRCRAFT FLIGHT MANUAL STEMME S10, VARIANT S12 4.5.5 LANDING, TAXI AND PARKING 4.5.5.1 LANDING On short final: • Airbrakes AS REQUIRED • Attitude Maintain WINGS LEVEL • Directional control Stay on centerline if necessary and turn the aircraft nose into the wind for drift.
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