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S-TEC 01279 Pilot Operating Handbook

Manual is about: Altitude Selector/Alerter

Summary of 01279

  • Page 1

    Altitude selector/alerter p/n 01279 i0.0 + i6 pilot’s operating handbook.

  • Page 2: Revisions

    2 revisions record of revisions retain this record in the front of this manual. On receipt of revisions, insert revised pages in the manual and enter date inserted and initials. Rev no revision date insertion date/by sb number rev no revision date insertion date/by sb number list of effective pages ...

  • Page 3: Notes

    3 notes.

  • Page 4: Table of Contents

    4 table of contents revisions 2 notes 3 table of contents 4 introduction 5 altitude selector/alerter block diagram 6 altitude selector/alerter 7 theory of operation 7 quick reference 8 important points to remember 8 features and functions 9 self test 9 data (dta) entry - operate 9 baro calibration 1...

  • Page 5: Introduction

    5 introduction the altitude/vertical speed selector/alerter, hereafter referred to as altitude selector/alerter, allows the pilot to preselect altitude and verti- cal speed. In addition to these basic functions, the selector provides an altitude (alt) alert mode, a decision height (dh) alert mode, a...

  • Page 6

    6.

  • Page 7: Altitude Selector/alerter

    7 altitude selector/alerter theory of operation the altitude selector/alerter (asa) enables the pilot to preselect al- titudes and rates of climb or descent to be used by the autopilot. The asa reads and decodes the altitude information from the altitude en- coder. This decoded information is adjust...

  • Page 8: Altitude Selector/alerter

    8 data entry - liquid crystal operate switch display panel barometric input selector calibration knob -turn cw (baro) mode to increase, pull switch for decimals vertical speed selector and manual mode switches altitude read out/altitude selector, alert (alr) and decision height (dh) alert mode switc...

  • Page 9: Features and Functions

    9 features and functions self test when power is applied, the altitude selector alerter will conduct an internal self test of the computer electronic elements, the display and an- nunciations and the altitude alerter audio tone (a two tone "ding dong"). Successful test conclusion is indicated by the...

  • Page 10: Baro Calibration

    10 baro calibration encoding altimeters provide altitude information referenced to a stan- dard pressure of 29.92 inches of mercury. Conversion of this information is accomplished by computers in the air traffic control centers by ap- plying the local altimeter setting, corrected to sea level. The b...

  • Page 11: Vertical Speed (Vs) Selector

    11 if the selector/alerter engages altitude on the autopilot higher than the selected altitude, adjust the baro calibration to a higher number than the current altimeter setting. If the selector/alerter engages at a lower altitude than is selected, adjust the baro calibration to a lower number. An a...

  • Page 12: Automatic Vs Select

    12 the vertical speed display is the only function that can be accessed directly in the operate mode, therefore, vertical speed changes can be commanded by simply rotating the selector knob. If you are in the “en- try” (ent) mode you can access the vs mode by selecting the vs button and then rotatin...

  • Page 13

    13 automatic vertical speed reduction at altitude capture note: some installations allow a maximum of +/- 3000 fpm. The example given below is for units limited to +/- 1600 fpm. While in operate mode (ent blank), the vertical speed commanded will be automatically reduced as the aircraft approaches t...

  • Page 14: Altitude Read Out

    14 altitude (alt) select function the alt mode switch has two functions. When selected in entry mode it will address the altitude selector function as indicated by the “sel” annunciator flash. Select the desired altitude by rotating the se- lector knob to input the altitude in thousands and hundreds...

  • Page 15: Caution

    15 decision height (dh) alert mode the decision height (dh) alert mode will provide altitude alerting at the set dh altitude by activation of the chime and flashing of the dh annunciator. The chime will sound entering and leaving a 100 ft. Win- dow at the dh. To set, push dta for entry, select dh mo...

  • Page 16: Operation

    16 operation the altitude selector/alerter system is engaged (coupled to the au- topilot) by use of the vs and alt switches on the regular autopilot pro- grammer. For vs selector operation, select “vs” mode on the selector alerter and set desired vertical speed, then depress the “vs” mode switch on ...

  • Page 17: Preflight

    17 preflight the following preflight procedure provides an operational test of the entire system, including the encoder, the altitude selector/alerter and the autopilot. A successful test is indicated by the autopilot switching from vs mode to alt hold mode as the selected altitude is matched to fie...

  • Page 18: 5. Autopilot -

    18 d. Push vs switch to activate vs selector and rotate selector switch knob to input desired climb (+) vertical speed. E. Push alt switch to address altitude set mode - alt sel. F. Push dta switch to exit data entry mode. 5. Autopilot - a. Engage hdg mode. B. Simultaneously depress vs and alt switc...

  • Page 19: In-Flight

    19 in-flight 1. Encoder and transponder on (altitude portion of the selector will not operate unless the altitude encoder is on and operating). 2. Check baro setting, adjust as necessary. 3. Select desired altitude. 4. Select desired vertical speed. 5. Engagement: simultaneously depress the vs and a...

  • Page 20: Emergency Procedures

    20 rate of climb performance typically diminishes with increases in al- titude. Note: always be sure the selected vertical speed is within the capability of the airplane for the existing conditions. Reduce the commanded vertical speed when the indicated airspeed falls be- low the best rate of climb ...

  • Page 21: Lost Encoder Data

    21 lost encoder data anytime the altitude selector/alerter is in use and encoder data is lost, the selected altitude will be replaced by three dashes, which will flash for five seconds then go steady. This is accompanied by three chimes. The last selected vertical speed will still be displayed (exam...

  • Page 22: System Specifications

    22 system specifications altitude selector/alerter power required: 14/28 vdc weight: 1.25 lbs dimensions: 1.6 x 3.42 x 6.75 in. Tso: c9c.

  • Page 23: List of Acronyms

    23 alr alert alt altitude amps amperes asa altitude selector/alerter baro barometric ccw counter clockwise cw clockwise das designated alteration station dh decision height dta data ent entry faa federal aviation administration fl flight level fpm feet per minute ft feet hdg heading hg mercury in in...

  • Page 24

    S-tec corporation a meggitt aerospace systems company one s-tec way · municipal airport mineral wells, texas 76067-9236 usa telephone: (940) 325-9406; fax: (940) 325-3904 1-800-usa-stec www.S-tec.Com information in this document is subject to change without notice. ©2002 s-tec corporation. All right...