Raven I POH Flashcards

Question

Engine Maximum Speed

Answer 1

2718 RPM (102%)

Answer 2

500°F (260°C)

Answer 3

245°F (118°C)

Answer 4

Minimum during idle 25 psi Minimum during flight 55 psi Maximum during flight 95 psi Maximum during start & warm up 115 psi

Answer 5

``` Maximum gross weight 2400 lb (1089 kg) Minimum gross weight 1550 lb (703 kg) Maximum per seat including baggage compartment 300 lb (136 kg) Maximum in any baggage compartment 50 lb (23 kg) ```

Answer 6

92 - 102.5 inches 3L - 3R inches

Answer 7

14,000 feet

Answer 8

9000 feet AGL to allow landing within 5 minutes in case of fire

Answer 9

``` 100 KIAS Seatbelts Loose Items Passengers Rear seats Not left Door ``` Limitations: Operation up to 100 KIAS approved with any combination of cabin doors removed. All seat belts must be buckled and loose items in cabin must be properly secured during doors-off flight. Normal Procedures: Maximum airspeed with any door(s) off is 100 KIAS. Warn passenger to secure loose objects and to keep head and arms inside cabin to avoid high velocity airstream. CAUTION Ensure all seat belts are buckled during door- off flight. Rear seat bottoms may lift if not restrained and items in baggage compartments could be blown out. CAUTION Flight with left door(s) removed is not recom- mended. Loose objects exiting left doors may damage tail rotor.

Answer 10

Tanks with bladders: Main tank Auxiliary tank Combined capacity ``` Total Capacity US gallons 30.5 17.2 47.7 ``` ``` Usable Capacity US gallons 29.5 17.0 46.5 ```

Answer 11

(VY) 55 KIAS

Answer 12

100 KIAS* * Certain conditions may require lower airspeed. See Vne placard in Section 2.

Answer 13

110 KIAS* (Do not exceed except in smooth air, and then only with caution) * Certain conditions may require lower airspeed. See Vne placard in Section 2.

Answer 14

60 to 70 KIAS

Answer 15

60 to 70 KIAS* * Certain conditions may require lower airspeed. See Vne placard in Section 2.

Answer 16

``` SLIDE-HARP, 2 step pick up, WREC-Fuel-Power lower nose, 60 KIAS <101% lower collective ``` 1. Verify doors latched, governor and hydraulics ON, and RPM stabilized at 101 to 102%. 2. Clear area. Slowly raise collective until aircraft is light on skids. Reposition cyclic as required for equilibrium, then gently lift aircraft into hover. With manual controls, trim cyclic forces as required. 3. Check gages in green and adjust carb heat if required. Lower nose and accelerate to climb speed following profile shown by height-velocity diagram in Section 5. If RPM drops below 101%, lower collective. ``` Seatbelts Lights/Warning Lights Instruments Doors Eng Guages Hydros Area Clear RPM Passengers/cabin ``` ``` Warning Lights RPM Engine Gages Carb Heat Fuel Power ```

Answer 17

``` WREC-Fuel-Power MCP 110 KIAS Turbulence 60-70 KIAS No Leaning Mixture Aft CG limit, oscillation, small left pedal. ``` 1. Adjust carb heat if required. (See page 4-12.) 2. Verify RPM in green arc. 3. Set manifold pressure as desired with collective. Observe MAP and airspeed limits. Maximum recommended cruise speed is 110 KIAS. 4. Verify gages in green, warning lights out. CAUTION Do not exceed 110 KIAS except in smooth air, and then only with caution. In turbulence, use lower airspeed. If turbulence is significant or becomes uncomfortable for the pilot, use 60 to 70 KIAS. CAUTION In-flight leaning with engine mixture control is not allowed. Mixture must be full rich during flight. NOTE When loaded near aft CG limit, slight yaw oscillation during cruise can be stopped by applying a small amount of left pedal.

Answer 18

WREC-Fuel-Power Down Stop Small Split Don't chop Gov inop 4000' reduce throttle before collective ``` RPM Green 60-70 KIAS 40' flare 8' level, collective, throttle 80% + 1 per 1000' ``` 1. Adjust carb heat if required. (See page 4-12.) 2. Lower collective to down stop and adjust throttle as required for small tachometer needle separation. CAUTION To avoid inadvertent engine stoppage, do not chop throttle to simulate a power failure. Always roll throttle off smoothly for small visible needle split. NOTE Governor is inactive below 80% engine RPM regardless of governor switch position. NOTE When entering autorotation from above 4000 feet, reduce throttle slightly before lowering collective to prevent engine overspeed. 3. Adjust collective to keep rotor RPM in green arc and adjust throttle for small needle separation. 4. Keep airspeed 60 to 70 KIAS. 5. At about 40 feet AGL, begin cyclic flare to reduce rate of descent and forward speed. 6. At about 8 feet AGL, apply forward cyclic to level aircraft and raise collective to control descent. Add throttle if required to keep RPM in green arc. CAUTION Simulated engine failures require prompt lowering of collective to avoid dangerously low rotor RPM. Catastrophic rotor stall could occur if the rotor RPM ever drops below 80% plus 1% per 1000 feet of altitude.

Answer 19

``` If you must Same as recovery Into spring Skids level nose straight Inspect shoes ``` If practice autorotations with ground contact are required for demonstration purposes perform same as power recovery autorotations except: Prior to cyclic flare, roll throttle off into overtravel spring and hold against hard stop until autorotation is complete. (This prevents throttle correlator from adding power when collective is raised.) Always contact ground with skids level and nose straight ahead. NOTE Have landing gear skid shoes inspected frequently when practicing autorotations with ground contact. Rapid wear of skid shoes may occur.

Answer 20

Simulate with switch Hover is difficult Relax before turning on Hydraulic system failure may be simulated using the cyclic-mounted hydraulic switch. CAUTIONN With hydraulics switched OFF, controlling helicopter in a hover may be difficult due to control system feedback forces. CAUTION Before switching hydraulics from OFF to ON, relax force on cyclic and collective to avoid over controlling.

Answer 21

``` S/N 0202 and after Raising collective reduces heat Pilot override Unlatch unless obvious Apply as required Monitor gage Adjust hover / power change ``` R44 helicopter S/N 0202 and on are equipped with a carburetor heat assist device. The carb heat assist correlates application of carburetor heat with changes in collective setting to reduce pilot work load. raising collective reduces heat. A friction clutch allows the pilot to override the system and increase or decrease heat as required. A latch is provided at the control knob to lock carburetor hear off. The knob should be left unlatched unless it is obvious that conditions are not conducive to carburetor ice. Apply carburetor heat as required if carburetor ice is a possibility. Monitor CAT gage and readjust as necessary following lift to hover or any power change.

Answer 22

WREC Fuel Power ``` Reduce collective Carb heat Observe airspeed limits Max 110 KIAS smooth air No pushover ``` ``` into wind Low rate descent 60 KIAS initially Reduce altitude and airspeed to hover < 300 FPM at 30 KIAS ``` Lower collective Full down Slope cyclic neutral Never unattended Hold throttle passenger exiting 1. Reduce power with collective as desired. Adjust carb heat as required. Observe airspeed limits. Maximum recommended airspeed is 110 KIAS except in smooth air. CAUTION Do not initiate a descent with forward cyclic. This can produce a low-G condition. Always initiate a descent by lowering collective. 2. Make final approach into wind at lowest practical rate of descent with initial airspeed of 60 knots. 3. Reduce airspeed and altitude smoothly to hover. (Be sure rate of descent is less than 300 FPM before airspeed is reduced below 30 KIAS.) 4. From hover, lower collective gradually until ground contact. 5. After initial ground contact, lower collective to full down position. CAUTION When landing on a slope, return cyclic control to neutral before reducing rotor RPM. CAUTION Never leave helicopter flight controls unattended while engine is running. CAUTION Hold throttle closed if passenger is entering or exiting with engine running and left seat collective installed.

Answer 23

``` Assemplies - 2000' Blade slap -65 - 100 and below 1000 FPM Avoid prolonged, 500' preferably 1000' Repetitive Look ahead ATC - Pilot judgment ``` To improve the quality of our environment and to dissuade overly restrictive ordinances against helicopters, it is imperative that every pilot minimize noise irritation to the public. Following are several techniques which should be employed when possible. 1. Avoid flying over outdoor assemblies of people. When this cannot be avoided, fly as high as practical, preferably over 2000 feet AGL. 2. Avoid blade slap. Generally occurs at airspeeds below 100 KIAS. It can usually be avoided by maintaining 100 KIAS until rate of descent is over 1000 FPM, then using a fairly steep approach until airspeed is below 65 KIAS. With the right door vent open, the pilot can easily determine those flight conditions which produce blade slap and develop piloting techniques to eliminate or reduce it. 3. When departing from or approaching a landing site, avoid prolonged flights over noise sensitive areas. Always fly above 500 feet AGL and preferably above 1000 ft AGL. 4. Repetitive noise is far more irritating than a single occurrence. If you must fly over the same area more than once, vary your flight path to not overfly the same buildings each time. 5. When overflying populated areas, look ahead and select the least noise sensitive route. Note Above procedures do not apply where they would conflict with Air Traffic clearances or instructions or when, in the pilot's judgment, they would result in an unsafe flight path.

Answer 24

``` Seat belts - Fastened Fuel shut-off valve - ON Cyclic/collective friction - OFF Cyclic, collective, pedals - Full travel free Throttle - Full travel free Collective - Full down, friction ON Cyclic - Neutral, friction ON Pedals - Neutral Rotor brake - Disengaged Circuit breakers - In Carb heat - OFF Mixture - Full rich Mixture guard - Installed Trim and landing light switches - OFF Avionics switch (if installed) - OFF Clutch - Disengaged Altimeter - Set HYD and governor switches - ON ```

Answer 25

Throttle twists for priming - As required Throttle - Closed Battery, strobe switches - ON Area - Clear Ignition switch - Start, then Both Starter-On light - Out Set engine RPM - 50 to 60% Clutch switch - Engaged Blades turning - Less than 5 seconds Alternator switch - ON Oil pressure within 30 seconds - 25 psi minimum Avionics, headsets - ON Wait for clutch light out - Circuit breakers in Warm-up RPM - 60 to 70% Engine gages - Green Mag drop at 75% RPM - 7% max in 2 seconds Carb heat - CAT rise/drop, set as required Sprag clutch check - Needles split Doors - Closed and latched Limit MAP chart - Check Cyclic/collective friction - OFF Cyclic trim or hydraulic system - Check Governor On, increase throttle - RPM 101-102% Warning lights - Out Lift collective slightly, reduce RPM - Horn/light at 97% CAUTION On slippery surfaces, be prepared to counter nose-right rotation with left pedal as governor increases RPM. NOTE For trim check, switch trim ON and verify balanced cyclic forces. For hydraulic system check, use small cyclic inputs. With hydraulics OFF, there should be approximately one half inch of freeplay before encountering control stiffness and feedback. With hydraulics ON, controls should be free with no feedback or uncommanded motion. NOTE Before takeoff, pilot should uncover one ear and listen for any unusual noise which may indicate impending failure of a bearing or other component.

Answer 26

17 Knots any direction 9600' density Altitude Refer to HIGE chart for allowable gross weight. In Ground Effect Caution: Ideal conditions Note: Carb heat will reduce ceiling by p to 2400'