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P/N 13772-108

Section 9

Cirrus Design

Supplements

SR22

DTA (Data) 

– The data entry button is used to select data entry mode.

The first time the DTA button is pressed the selector will enter the data
entry mode, the ENT annunciator will come on, and the SEL
annunciator will flash to indicate the system is ready to accept an
altitude entry. To change baro (BAR) correction, Decision Height (DH),
or Vertical Speed (VS), press the appropriate button on the selector
and rotate the input knob at the right of the display CW to increase the
displayed numbers and CCW to decrease the displayed numbers. Pull
the knob out and rotate as required to change the decimal numbers.

When the system is in the ENT mode, it is not coupled to the autopilot.
In this mode, the autopilot will hold the last vertical speed selected. 

• Note •

It is not necessary to enter the DTA mode to change the
vertical speed, if vertical speed is coupled to the autopilot. If
this is the case, vertical speed changes can be made by
rotating the input knob as required to obtain the new vertical
speed.

While in this mode, pressing DTA a second time will toggle the system
to ‘operate’ mode. Repeatedly pressing the DTA button will toggle the
system between ENT and ‘operate’ mode.

BAR (baro) –

 In this mode, the baro setting used by the altitude

selector may be changed. When the Altitude Selector / Alerter is
initially powered, the BARO mode is displayed automatically at the
completion of the self-test. At other times, it is necessary to enter the
data entry mode by pressing the DTA button and then inputting a new
baro correction. Pressing the DTA button a second time will return the
system to the ‘operate’ mode.

Revision 5: 08-15-07

Содержание System 55X

Страница 1: ...in the Cirrus Design SR22 this Supplement is applicable and must be inserted in the Supplements Section Section 9 of the Cirrus Design SR22 Pilot s Operating Handbook This document must be carried in...

Страница 2: ...d and Command Altitude display and baro correction Altitude and Decision Height DH alert and Vertical Speed Hold and Command Refer to S Tec System Fifty Five X Autopilot Pilot s Operating Handbook POH...

Страница 3: ...topilot must be disengaged for missed approach go around and balked landing 4 Flaps must be set to 50 for autopilot operation in Altitude Hold at airspeeds below 95 KIAS 5 Flap deflection is limited t...

Страница 4: ...e shall be no greater than a 45 degree intercept h The ILS is flown at normal approach speeds and within any STC or TC speed constraints and as defined in this flight manual i The flaps should be exte...

Страница 5: ...P N 13772 108 5 of 24 Cirrus Design Section 9 SR22 Supplements SR22_FM09_1502A Figure 1 System 55X Altitude Selector Alerter Autopilot Computer Revision 5 08 15 07...

Страница 6: ...lfunction has been identified and corrected The autopilot may be disconnected by 1 Pressing the A P DISC Trim switch on the control yoke handle 2 Pulling the AUTOPILOT circuit breaker on Essential Bus...

Страница 7: ...heck power to turn coordinator Flashing NAV REV or APR Off navigation course by 50 needle deviation or more Use HDG mode until problem is identified Crosscheck raw NAV data compass heading and radio o...

Страница 8: ...ssing the autopilot VS button WARNING The pilot must properly monitor and control the engine power to avoid stalling the airplane in autopilot altitude hold or vertical speed modes Note Any coupled Al...

Страница 9: ...n the ALT SEL setting on the altitude selector is within 100 feet of indicated altitude on altimeter Autopilot ALT mode should remain illuminated indicating autopilot altitude hold is engaged If ALT e...

Страница 10: ...eviation needle moves left or right Note that control yokes follow direction of needle movement f Autopilot Disconnect Tests 1 Press Pilot A P DISC Trim Switch control yoke Note that the autopilot dis...

Страница 11: ...he present altitude Note Manually flying the airplane off the selected altitude will not disengage altitude hold and the autopilot will command a pitch change to recapture the altitude when the contro...

Страница 12: ...tween actual vertical speed and the selected vertical speed usually in climb The pilot should adjust power or reduce the commanded vertical speed as appropriate to remove the error Altitude Pre Select...

Страница 13: ...Positive vertical speed indicates climb and negative vertical speeds indicates descent Any vertical speed from 1 100 FPM to 16 1600 FPM is selectable Note If an altitude is selected that requires an o...

Страница 14: ...the selector knob CW to increase setting or CCW to decrease setting Only three digits are displayed for millibars for a BARO setting of 952 8 mb the display will indicate 952 and for a BARO setting of...

Страница 15: ...sh again as the airplane approaches within 300 feet of the selected altitude If the airplane s altitude deviates 300 feet from the selected altitude the chime will sound and the ALR annunciator will f...

Страница 16: ...the APR button on the autopilot programmer computer The NAV GPSS and APR annunciators will be illuminated Use HDG to accomplish a procedure turn Engage GPSS again to complete the approach VOR Tracking...

Страница 17: ...de can be manually armed by pressing the ALT button once Once capture is achieved GS annunciator will come on and ALT annunciator will go out Section 5 Performance There is no change to the airplane p...

Страница 18: ...ector will signal the autopilot to hold the selected altitude The altitude selector alerter receives uncorrected altitude data from the same altitude encoder used by the transponder In addition to the...

Страница 19: ...Indicator GPSS converts this information and sends this heading error directly to the autopilot In the GPSS mode the converter receives ground speed and bank angle digital signals that are calculated...

Страница 20: ...ll not engage if an autopilot roll mode is not engaged Altitude correction for enroute barometric pressure changes may be made by rotation of the VS knob on the autopilot programmer computer Clockwise...

Страница 21: ...coder are operating and then both the autopilot ALT and VS modes are selected The altitude selector also provides a vertical speed signal to the autopilot pitch computer that is proportional to the am...

Страница 22: ...this mode the autopilot will hold the last vertical speed selected Note It is not necessary to enter the DTA mode to change the vertical speed if vertical speed is coupled to the autopilot If this is...

Страница 23: ...or will command the autopilot to engage altitude hold Readout When the ALT button is pressed in the operate mode the SEL annunciator will go out and the display will show the baro corrected encoder al...

Страница 24: ...go out Repeated activation of the DH button alternately activates and deactivates the DH mode VS Vertical Speed At initial start up after self test pressing the Altitude Selector Alerter VS button ena...

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