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Hoffman DIMONA H 36 Flight Manual

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HOFFMANN
AIRCRAFT
This Flight Manual must be carried on board of the motorglider at all times.
This Flight Manual is FAA approved for U.S. registered gliders in accordance with the provisions of 14
CFR Section 21.29 and is required by FAA Type Certification Data Sheet No. .....................
Reg. No. .................
Owner : ...........................................................
...........................................................
...........................................................
Austrian edition of operating instructions is approved under § 33 ZLLV, Bundesgesetzblatt 415,
Aug 17 1983
Published Nov 15 1985
Approval of translation has been done by best knowledge and judgment. In any case the original text in
German language is authorative.
HOFFMANN AIRCRAFT
P.O. Box No. 100
A-1210 Vienna
Austria
Phone (0 22 2/2536 21 or 25 3635

FLIGHT MANUAL

H36 DIMONA
Ser. No. .........................
BAZ—approved on Nov. 22 1985
CORP.

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  • Page 1: Flight Manual

    HOFFMANN AIRCRAFT HOFFMANN AIRCRAFT CORP. P.O. Box No. 100 A-1210 Vienna Austria Phone (0 22 2/2536 21 or 25 3635 FLIGHT MANUAL H36 DIMONA This Flight Manual must be carried on board of the motorglider at all times. This Flight Manual is FAA approved for U.S. registered gliders in accordance with the provisions of 14 CFR Section 21.29 and is required by FAA Type Certification Data Sheet No.

  • Page 2: Hoffmann

    Section 0 Hoffmann Flugzeugbau Revisions H 36 Dimona PILOTS OPERATING HANDBOOK LOG OF REVISIONS Revision Number and Date Revised Pages Description of Revision All manuals for the Hoffmann H 36 can be ordered from: Hoffmann Aircraft, Richard — Neutra — Gasse 5, P.O. Box 100, A — 1214 Vienna / Austria WARN ING~ This handbook should not be used for operational purpose unless it is maintained in a current status.

  • Page 3: Hoffmann

    Hoffmann H 36 DIMONA General THIS HANDBOOK CONTAINS IMPORTANT INFORMATION FOR THE PILOT! This information is broken down into informative sections in the order shown below. Section 0 ------------------ Revisions Section 1 ------------------ General Section 2 ------------------ Limitations Section 3 ------------------ Emergency Procedures Section 4...
  • Page 4 Hoffmann H 36 DIMONA General Table of Contents Section 1 General Paragraph Page Introduction ------------------------------------------------ Three view drawings --------------------------------------- Description ------------------------------------------------ Engine ------------------------------------------------ Propeller ------------------------------------------------ Approved Fuels --------------------------------------- Approved Lubricants --------------------------------------- Maximum Certified Weights ------------------------------ Symbols, Abbreviations and Terminology ------------ 1 —...

  • Page 5: Three View Drawings

    Hoffmann H 36 DIMONA General 1 . 1 Introduction: This handbook contains material required to be furnished to the pilot by JAR 22. It also contains supplemental data supplied by the airframe manufacturer. Each section is divided by tab markers with Emergency Procedures tabbed in red.

  • Page 6: Description

    Hoffmann H 36 DIMONA General TECHNICAL DATA Wing Span ----------- 16,0 Meters ( 52 ft.) Length ----------- 6,85 Meters ( 22 ft.) Wing Area ----------- 15,20 m ( 164 sq. ft.) Wing Ratio ----------- 16,8 Maximum Gross Weight 770 kg (1698 lbs.) Maximum Wing Loading 50,7 daN/m ( 10,38 lbs/sq.

  • Page 7: Approved Lubricants

    Hoffmann H 36 DIMONA General Approved Lubricants: Automotive lubricants with SAE ratings compatible with the seasonal temperatures. Refer to Section 8, Servicing for lubrication usage chart. CAUTION Under no circumstances should Aviation Grade oil be used! Maximum Certified Weights: The maximum allowable take off weight is 770kg (1698 lbs.) Maximum weight for non-lifting parts is 560 kg (12361bs.) Symbols, Abbreviations and Terminology: Liters...

  • Page 8: Table Of Contents

    Hoffmann H 36 DIMONA Limitations Table of Contents Section 2 LIMITATIONS Paragraph: Page Category of Airworthiness ------------------------------------ Permitted Operations --------------------------------------------- Minimum Equipment --------------------------------------------- Engine Limitations ------------------------------------------------------ Oil Pressure ------------------------------------------------------ Oil Temperature ------------------------------------------------------ Cylinder Head Temperature -------------------------------------------- Voltmeter -------------------------------------------------------------- Airspeed Limitations and Load Factor Limits ----------------- 10 - 11 2.10...

  • Page 9: Category Of Airworthiness

    Hoffmann H 36 DIMONA Limitations Operating Limitations Category of Airworthiness Utility (U) according to JAR 22 Certifications basis: JAR 22 (Joint Airworthiness Requirements for gliders and motorgliders) effective 15.3.82 Permitted Operations: The H 36 DIMONA is certified for VFR flights . (Day) Flights into known icing conditions are prohibited.

  • Page 10: Engine Limitations

    Hoffmann H 36 DIMONA Limitations Engine Limitations Engine Type: Limbach L 2000 EB 1C RPM Limitations (Indicator Markings) Maximum take off RPM (maximum 5 minutes) 59 KW (So hp.) 3,400 RPM Maximum ambient atmospheric temperature + 38 C (+100 F) Maximum RPM (METO) 53 KW (72 hp.) 3,000 RPM Red Line...

  • Page 11: Airspeed Limitations And Load Factor Limits

    Hoffmann H 36 DIMONA Limitations Airspeed limitations and load factor limits: Maximum allowable airspeed (calm air) 275 km/h 149 kts 170 mph Maximum allowable airspeed (turbulent) 210 km/h 113 kts 130 mph Maneuvering speed 176 km/h 35 kts 109 mph Maximum speed with airbrakes extended 275 km/h 149 kts...
  • Page 12 Hoffmann H 36 DIMONA Limitations 2.9 Cont. To reduce the risk of encountering control flutter at Vne the following table should be used to determine Vne at various altitudes. ALTITUDE (m) 0 – 2000 3000 4000 5000 6000 (ft) 0 - 6500 10000 13000 16500...

  • Page 13: Airspeed Indicator Markings

    Hoffmann H 36 DIMONA Limitations 2.10 Airspeed Indicator Markings (IAS): Red Line (Maximum allowable Airspeed) 275 km/h 149 kts 170 mph Yellow arc (Caution range) 210 — 275 km/h 113 — 149 kts 130 — 170 mph Green arc (Normal range) 73 —...

  • Page 14: Center Of Gravity Limitations

    Hoffmann H 36 Dimona Limitations 3.13 Center of Gravity Limitations The Center of Gravity ranges are: Forward: 270 mm aft of leading edge, wing root rib Up to 740kg: 385 mm aft of leading edge, wing root rib At 770kg 370 mm aft of leading edge, wing root rib Between 740 and 770 kg...

  • Page 15: Placards And Markings

    Hoffmann H 36 DIMONA Limitations 2.14 Placards: Translation of original placards in German language: Gepack max 12 kg - Baggage max 12 kg Storklappen - Radbremse - Airbrake .. . Wheel brake Vollgas-Gas-Leerlauf - Full - throttle - idle Brandhahn - Fuel shut off valve auf ...
  • Page 16 Hoffmann H 36 DIMONA Limitations VH-ABC Registration Call Sign in Centre of Instrument Panel Canopy Jettison and Emergency Exit Purl both RED handles on Canopy frame AFT Push Canopy up and away Release safety harness On lower center console Stand up and exit aircraft from left or right sides respectively When using a manual parachute Release, wait 2 seconds prior to...
  • Page 17 Hoffmann H 36 DIMONA Limitations 2 - 10...
  • Page 18 Hoffmann H 36 DIMONA Limitations 2 - 11 2—1 0...
  • Page 19 Hoffmann H 36 DIMONA Emergency Procedures Table of Contents Section 3 EMERGENCY PROCEDURES Paragraph Page Stalls, Power on ---------------------------- Stalls, Power off ---------------------------- Spin Recovery ---------------------------- Engine failure during Take—Off ---------- Engine failure in flight ------------------- Emergency Landing ---------------------------- Icing ---------------------------------------------- Carburetor Icing ---------------------------- Water Landings...

  • Page 20: Stalls, Power Off

    Hoffmann H 36 DIMONA Emergency Procedures Stalls, Power On: On coming stall warning can be recognized by buffeting on the aircraft and a loss of positive control in the stick and pedals. If permitted to continue, the aircraft will stall and roll over on the stalled wing. A spin may result.

  • Page 21: Engine Failure During Take-Off

    Hoffmann H 36 DIMONA Emergency Procedures Engine Failure during Take-Off: Check immediately Fuel valve ON position Fuel pump ON position If these are not the cause of engine failure, and the altitude is less than 300ft, land straight ahead. If more than 300 ft altitude are available, a 180* turn in the glider mode can be made.

  • Page 22: Engine Failure In Flight

    Hoffmann H 36 DIMONA Emergency Procedures 3.5. Engine Failure during flight: Check immediately : Fuel Valve - ON position Fuel pump - switch ON If the engine does not start or run, feather prop and establish a glide. Best glide ratio will be accomplished at an airspeed of 105 km/h (57 kts).

  • Page 23: Engine Fire During Flight

    Hoffmann H 36 DIMONA Emergency Procedures 3.10 Engine fire during flight: Throttle - full power Fuel Valve - OFF Cabin Heat - Push , Cabin air - Pull Ignition - OFF when engine Stops Slipping the aircraft can keep smoke and flames from the cockpit Execute normal landing from a glide 3.
  • Page 24 Hoffmann H 36 DIMONA Normal Procedures Table of Contents Section 4 NORMAL PROCEDURES Paragraph Page Cockpit Layout ....……………… 24—25 Instrument Console Layout ..………….. Lower Console Layout ....…………….. Preflight Inspection ....……………... 26—27 Preflight Inspection walk around Guide …… Before starting Engine ....……………... Starting Engine ....……………………...
  • Page 25 Hoffmann Normal procedures H 36 DIMONA Cockpit Layout 2—1 0...

  • Page 26: Cockpit Layout

    Hoffman H 36 DIMONA Normal Procedures Cockpit Layout and Controls Illustration: - stick - airbrake lever - throttle - trim - fuel shut off valve - parking brake - Rudder pedal adjustment - cabin air - cabin heat - choke...

  • Page 27: Lower Console Layout

    Hoffmann H 36 Dimona Normal Procedures Lower Console Layout: - airbrake - throttle - trim - fuel shut off valve - parking brake Preflight Inspection: (The areas where these visual checks are to be performed are illustrated in 4.5 “Walk around Guide”). Ignition OFF - Main Switch OFF Open engine cowling - CHECK: Oil Level...
  • Page 28 Hoffmann H - 36 DIMONA Normal Procedures Elevator and Horizontal Stabilizer - CHECK: Fiber Glass Skin for damage or cracks Excessive play in mounting tugs Mounting tugs safetied? Rudder and Fin - CHECK: Fiber Glass skin for damage or cracks Excessive play in mounting tugs Rudder connected? Remove Pitot tube covert...

  • Page 29: Preflight Inspection Walk Around Guide

    Hoffmann H 36 DIMONA Normal Procedures Walk around guide: Before starting engine: Canopy ---- ---- LOCKED Rudder Pedals --------- ADJUSTED Fuel Shutoff Valve -- OPEN Controls --------- FREE Airbrake -------- Extend — Retract Parking Brake -------- Prop Control ----- MOVE ONE CYCLE Altimeter --------- Master Switch...

  • Page 30: Starting Engine

    Hoffmann H 36 DIMONA Normal Procedures Starting engine: All Switches except Master --------- Choke ------------------------------------ PULL Throttle ----------------------------------- OPEN ONE INCH Boost Pump ------------------------------ Ignition --------------------------------- Propeller Area Clear -------------------- CHECK Starter Button --------------------------- PRESS After engine starts release starter button. Adjust throttle to 1000 RPM. When engine is running smoothly - close the choke.

  • Page 31: Before Take-Off Check

    Hoffmann H 36 DIMONA Normal Procedures Before Take-Off Check: Parking Brake ----------- Throttle------------------- OPEN to 2200 RPM Propeller Lever---------- PULL and RELEASE The propeller should now change to Cruise pitch Throttle ------------------ OPEN --MAX POWER MAX RPM 2300! Throttle --------------- IDLE RPM Propeller Lever --------- PULL AND RELEASE...

  • Page 32: Cruise

    Hoffmann H 36 DIMONA Normal Procedures 4.10 Cruise: To change propeller position from Take—Off to Cruise the RPM must be between 2000 and 2200. Pull and release the propeller control. A 500 RPM drop should occur without throttle adjustment. The throttle can then be opened for Cruise power (2500 - 3000 RPM) as required.

  • Page 33: Permitted Aerobatic Maneuvers

    Hoffmann H 36 DIMONA Normal Procedures 4.13 Permitted Aerobatic Maneuvers: ALL AEROBATIC MANEUVERS INCLUSIVE SPIN AND FLIGHTS IN CLOUDS ARE FORBIDDEN 4-10 2—1 0...

  • Page 34: Descent And Approach

    Hoffmann H 36 DIMONA Normal Procedures 4.14 Decent and Approach: Decent with power as required to obtain 180 km/h (112 mph). When entering pattern the propeller should be switched to START position. When turning base leg reduce power to bring the RPM under 1500 RPM. On final electric Boost Pump - ON, Airspeed —...
  • Page 35 33.1 Hoffmann H 36 DIMONA Slip 4.17 Slip: 4.17.1 Entry and Recovery: Slip is practicable from 80 km/h (43 kt) (50 mph) to 120 km/h (65 kt) (75 mph). — Throttle idle — Apply aileron control in direction of intended slip. —...
  • Page 36 33.2 Hoffmann H 36 DIMONA Slip 4.17.2 Characteristics cont.: At low airspeeds and high yaw angels rudder control force reversal may occur. Recover force does not exceed 20 N (4 pounds). If aileron control is reset to neutral, rudder returns to neutral without assistance.
  • Page 37 Hoffmann H 36 DIMONA Performance Data Table of Contents Section 5 PERFORMANCE DATA Paragraph Page Take—Off Distances Landing Distances Rate of Climb Cruise Speed Range Fuel Consumption Maximum Altitude 5—1 2—1 0...
  • Page 38 Hoffmann H 36 DIMONA Performance Data Take—Off Distance: All figures are based on ICAO standard atmosphere, Gross Weight of 770 kg (1698 lbs). Airfield conditions: calm wind, dry flat surface with short grass. Take-Off speed: 80 km/h IAS (50 mph) Climb speed: 85 km/h IAS (53 mph) Field...
  • Page 39 Hoffmann H 36 DIMONA Performance Data Landing Distances: All figures are based on ICAO atmosphere, Gross Weight of 770 kg ( 1698 lbs). Airfield conditions: Calm wind, dry, flat surface, with short grass. Approach speed - 95 km/h (60 mph) Yellow Triangle Marking Touchdown speed - 70-75 km/h (44 -46 mph) Landing Roll -...
  • Page 40 Hoffmann H 36 DIMONA Performance Data Maximum Altitude: Aircraft weight; 770 kg, ICAO standard atmosphere. The DIMONA has demonstrated the ability to climb to5,500 m NN (18,045ft). 5—4 2—1 0...
  • Page 41 Hoffmann H 36 DIMONA Weight & Balance Equipment list Table of contents Section 6 WEIGHT AND BALANCE EQUIPMENT LIST Paragraphs: Page Empty Weight ---------------------------------------------- Reference Datum Line and CG Limits ------------------- 39 — 42 Weight Report ---------------------------------------------- Minimum Equipment List (incl. in fleet weight) --------- Additional Equipment list -------------------------------------...
  • Page 42 Hoffmann Weight & Balance H 36 DIMONA Equipment list Empty Weight: The DIMONA is weighed at the factory after the minimum equipment and extra accessories have been installed. The weight and the empty weight CG is entered upon the weight report found in Par. 6.3. Should, at some time the aircraft be repaired, or additional equipment added, the aircraft should be reweighed to adjust the weight report accordingly.
  • Page 43 Hoffman Weight & Balance H 36 Dimona Equipment list Sample Problem: Pilot 80 kg, Co-Pilot l00 kg, Baggage l0 kg, Empty Weight 520kg Empty Weight CG 340 mm, Fuel 80ltr/57,6kg _____________________________________________________________ Weight Moment (mm) (kg) (kg/mm). Empty Weight 176.800 Pilot 11.440...
  • Page 44 Hoffmann Weight & Balance 36 DIMONA Equipment list 6.2. cont. Empty weight CG limits: With a min. weight of 70 kg (155 lbs) in pilot’s seat, the CG will be within the allowable range, if the empty weight CG is within the limits shown below: Empty weight CG (mm aft of RDL) 6—4...
  • Page 45 Hoffmann Weight & Balance H 36 DIMONA Equipment list 6.2. cont Determination of empty weight CG position: Put x and x with their absolute value in mm into the formula where: is the empty weight CG position in mm aft of RDL (reference datum line). 6—5 2—1 0...
  • Page 46 Hoffmann weight & Balance H 36 DIMONA Equipment List Weighing Report: Date of Equipment Empty Empty C of Empty Max. Sign weighing first used for weight kg G (behind weight Payload kg carried out weigh (date) (lbs) datum) moment (lbs) mm/in.
  • Page 47 Hoffmann Weight & Balance H 36 DIMONA Equipment List Minimum equipment List: The minimum installed equipment, installed at the factory consists of the following: Airspeed indicator Altimeter RPM indicator with hour-meter Oil Pressure Indicator Oil Temperature Indicator Cylinder Head Temperature Gauge Fuel Quantity Indicator Voltmeter Standby Compass...
  • Page 48 Hoffmann Systems Description H 36 DIMONA SECTION 7 Cockpit Description: Instrument board: Is in three sections, the flight instruments are on the left, engine’ instruments on the right, and tilted for better viewing. The center console is for the installation of COM and NAV equipment. The main switch ON position is down and OFF when turned to the right.
  • Page 49 Hoffmann. H 36 DIMONA System Description Parking Brake: Is located next to the trim lever on the lower middle console. To engage parking brakes pull firmly on the air brake lever, and move then park brake lever aft. Release air brake lever. To release the park brake, again pull firmly on the air brake lever and move the park brake lever forward.
  • Page 50 Hoffmann H 36 DIMONA Aircraft Handling and Servicing Table of Contents Section 8 AIRCRAFT HANDLING AND SERVICING Paragraph Page Aircraft Assembly 48 — 49 Aircraft Disassembly Transporting the Aircraft Storage Cleaning the Aircraft 8—1 2—1 0...

  • Page 51: H 36 Dimona

    Hoffmann H 36 DIMONA Aircraft Handling and Servicing AIRCRAFT ASSEMBLY: Inspect all bolts and bushings for condition and apply a light coat of grease. - WINGS - Move the trim lever to full NOSE DOWN position Open latching — hooks. Place the mounting lever on the mounting lug, located in the rear middle console Unhook the wing (either wing) from its hanging mount.
  • Page 52 Hoffmann H 36 DIMONA Aircraft Handling and Servicing After both wings have been mounted remove the mounting lever and install the safety clip in the main mounting bolts. - HORIZONTAL FIN & ELEVATOR- Position Fin above Vertical Fin Raise Elevator slightly and firmly, push fin aft against the stop As you push the fin aft guide the elevator drive fork into the elevator lug Lock safety pin - FINAL ASSEMBLY -...

  • Page 53: Aircraft Disassembly

    Hoffmann H 36 DIMONA Aircraft Handling and Servicing AIRCRAFT DISASSEMBLY: Aircraft dis assembly is performed by reversing the steps outlined in 8.1 TRANSPORTING THE AIRCRAFT: For road transportation a closed trailer should be used. The components should be cushioned and protected against slippage or free movement.

  • Page 54: Storage

    Hoffmann H 36 DIMONA Aircraft Handling and Servicing STORAGE: For hangar storage the wings can be folded as in Par. 8.2. The wing tips can be hung from the horizontal fin with the provided support fixtures. The rear shear bolts on the fuselage should be padded to protect the wing skin.
  • Page 55 Hoffmann Supplements H 36 DIMONA Table of Contents Section 9 SUPPLEMENTS Paragraph: Page 9—1 2—1 0...

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