cessna-172-training-supplement

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AHRS FailureADC FailureAHRS ModesThe AHRS uses GPS, magnetometer, and air data to assist in attitude/headingcalculations, in addition to the data from its internal sensors. Loss of thisexternal data can affect the availability of attitude and heading information,even if the AHRS itself is functional. Either GPS or air data must be available forthe AHRS to provide attitude information. Additionally, loss of magnetometerdata will result in invalid heading information.NOTE: If the AHRS cannot provide valid heading information,the course pointer on the HSI will point straight up, effectivelyconverting it into a standard, fixed-card course deviationindicator. As a result, pilots can still perform partial-panelinstrument approach procedures following an AHRS failure.Cross-reference between heading information from the magneticcompass and course information from the PFD.Display FailuresIf either display fails, the G1000 should automatically enter reversionary mode,in which important flight information is presented in a condensed format onthe remaining display(s). Reversionary mode can also be activated manually bypressing the red DISPLAY BACKUP button on the audio panel. Engine IndicationSystem readings appear on the left edge of the screen, and the inset mapappears at lower right.Reversionary Mode (Failed PFD)14 • Aircraft Systems
Because the IAUs are not cross-linked, any functions handled by just one IAU willbe lost if its corresponding display fails. If the PFD fails, NAV1, COM1, and GPS1will be unavailable. If the MFD fails, NAV2, COM2, and GPS2 are unavailable.Other optional avionics may also become unavailable, depending on theparticular avionics configuration.Electrical FailureIf the alternator fails, a red “LOW VOLTS” annunciation will appear on the PFD. AllG1000 equipment will initially remain on, powered by the main battery. Followthe appropriate emergency checklist to verify the failure and attempt to resetthe alternator.If the “LOW VOLTS” annunciator remains on, the first step in the load sheddingprocedure is to switch Avionics Bus 1 off. This will disable optional equipmentand cooling fans, but the PFD, ADC/AHRS, #1 radio, etc. remain powered bythe essential bus. Continue with the checklist and prepare to land as soon aspractical. The main battery will supply power to the main and essential busesuntil M BUS VOLTS falls below 20 volts.Once the main battery is depleted, the standby battery system will supplypower to the essential bus for approximately 30 minutes. The standbybattery does not power the equipment on Avionics Bus 2, including the MFD,transponder, COM2 / NAV2 radios, and audio panel. COM1 MIC and NAV1 mustbe selected on the audio panel before power to Avionics Bus 2 is lost, or theradios cannot be tuned.NOTE: If you are not in IMC, turn off Avionics Bus 2 at the end ofthe Electrical Load Reduction checklist to further reduce thedraw on the main battery.Aircraft Systems • 15
Page 1 and 2: Cessna 172Training SupplementATPFli
Page 3: Revised 2021-10-08ContentsEarly & L
Page 6 and 7: NOTE: R-model 172s were originally
Page 8 and 9: Landing GearThe landing gear is a f
Page 10 and 11: Exterior LightingExterior lighting
Page 12 and 13: maximum smoothness. Carburetor heat
Page 14 and 15: G1000 Flight InstrumentsPrimary Fli
Page 16 and 17: Right Side - Top to BottomBottom Ed
Page 20 and 21: Standard Avionics ConfigurationsGar
Page 22 and 23: Single Garmin GNS430VFR & Traffic P
Page 24 and 25: SECTION 3Performance / Weight & Bal
Page 26 and 27: Calculate the Following1. Zero Fuel
Page 28 and 29: General Guidelines (continued):Engi
Page 30 and 31: Below 800 Feet AGLIf the engine qui
Page 32 and 33: 800 to 1500 Feet AGLIf an engine fa
Page 34 and 35: Engine Failure over WaterAlthough A
Page 36 and 37: Short-Field Takeoff1. Flaps 10°2.
Page 38 and 39: SECTION 5Arrival ProceduresSummary
Page 40 and 41: TIP: Do not allow briefing the appr
Page 42 and 43: the windshield, increase the pitch
Page 44 and 45: Seat PositionCorrectly positioning
Page 46 and 47: Normal Approach & Landing1. Complet
Page 48 and 49: No-Flap Approach & LandingSteps 1-4
Page 50 and 51: Soft-Field Approach & LandingSteps
Page 52 and 53: Power-Off 180° Accuracy Approach &
Page 54 and 55: Crosswind Approach & LandingCareful
Page 56 and 57: TIP: Develop the habit of applying
Page 58 and 59: Rejected or Balked LandingA rejecte
Page 60 and 61: Non-Precision Approach (VOR, LOC Ap
Page 62 and 63: SECTION 6In-Flight ManeuversNOTE: C
Page 64 and 65: GROUND USE ONLYPVT COM Power-Off St
Page 66 and 67: GROUND USE ONLYPVT Rectangular Cour
Page 68 and 69:
GROUND USE ONLYPVT Turns Around A P
Page 70 and 71:
GROUND USE ONLYCOM Lazy EightsLazy
Page 72 and 73:
GROUND USE ONLYCOM Steep SpiralsSte
Page 74 and 75:
GROUND USE ONLYCFI Elevator Trim St
Page 76 and 77:
11. Will the engine continue to run
Page 78 and 79:
47. Are the power settings listed o
Page 80:
53 (Usable Fuel) 4810 GPHFlaps 10Ce
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