1 MODIFICATIONS TO HSI ppt ON TD 56

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3 TERMINAL LEARNING OBJECTIVE: ACTION TEXT: Identify the major components, features, functions, and operational characteristics of the Horizontal Situation Indicator (HSI)(KI-525A). CONDITION: In a Classroom, given visual representations of the HSI (KI-525A) components and applicable references. STANDARD: Answer questions pertaining to the major components, features, functions and operational characteristics of the Horizontal Situation Indicator (HSI) (KI-525A).

4 ENABLING LEARNING OBJECTIVE A ACTION:Identify the features and functions of an HSI CONDITIONS:Label the features/function on a diagram of an HSI STANDARDS:IAW FM , TH-67 Operators Supplement

5 KCS-55A system Supporting: 1.King/Bendix: KI 525A (HSI) 2.King/Bendix: KNI 582 (RMI)

6 Magnetic Slaving TransmitterDirectional Gyro KA-51B Slaving Control

7 Aeronautical Information Manual Explanation of Changes (Change 1) Effective: 26 Jul 12 This change explains why slaved compass systems may be susceptible to heading errors on the ground and alerts pilots to the fact that the system’s erroneous heading may not self-correct. It also offers mitigation strategies to avoid a possible heading misalignment at takeoff. Para 1−1−7 d

8 d. Aircraft equipped with slaved compass systems may be susceptible to heading errors caused by exposure to magnetic field disturbances (flux fields) found in materials that are commonly located on the surface or buried under taxiways and ramps. These materials generate a magnetic flux field that can be sensed by the aircraft’s compass system flux detector or “gate”, which can cause the aircraft’s system to align with the material’s magnetic field rather than the earth’s natural magnetic field. The system’s erroneous heading may not self-correct. Prior to take off pilots should be aware that a heading misalignment may have occurred during taxi. Pilots are encouraged to follow the manufacturer’s or other appropriate procedures to correct possible heading misalignment before take off is commenced.

9 Compass Card Lubber Line Symbolic Aircraft Selected Course Pointer Course Select Knob VOR or RNAV (GPS) or LOC Deviation Bar Deviation Scale

10 Heading Select Knob To/From Indicator Dual Glideslope Chartreuse Pointers Glideslope Deviation Scale Heading Select Bug (NOT used in LOC or ILS modes)

11 ENABLING LEARNING OBJECTIVE B ACTION: Identify abnormal circumstances CONDITIONS: Given HSI indications STANDARDS: IAW TH-67 Operator’s Supplement

12 GLIDESLOPE POINTERS NOT VISIBLE DURING ILS Abnormal Indications NAV HDG WARNING FLAG (NAV) WARNING FLAG (HDG)

13 ENABLING LEARNING OBJECTIVE C ACTION: Conduct operational accuracy checks CONDITIONS: Given HSI indications STANDARDS: IAW FM , DOD FLIP (GP, AP/1, IFR-S), AIM

14 FAA A/FD SE

15 VHF Omnidirectional Test Signal (VOT) Tolerance + Tolerance +4 Transmits only the 360 o Radial. Generally on MHz Correct indication - FROM with 360 course selected Excessive error 5 deg right Ref: 14 CFR (b)1

16 VOR Ground Checkpoint 2 7 Tolerance +4 . Ground Checkpoints are not published in DOD FLIP but are published on Airport Diagrams and in the FAA Airport/Facility Directory. 066 o R OZR R VOL 14 Page: 80

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NM 2000 MSL R Published in DOD FLIP AP/1 2. Tolerance ± 6º

1. Center both HSI deviation bars. 2. Tolerance: Selected course Pointers must be within 4 o of each other. Ref: FM Para 7-41 AIM Para

20 ENABLING LEARNING OBJECTIVE D ACTION: Determine aircraft’s position in relation to a VOR CONDITIONS: Given HSI indications STANDARDS: IAW FM , TH-67 operators supplement

21 TO/FROM Indicator Selected COURSE RADIAL - read opposite TO/FROM indicator 180° radial 4° LEFT. The aircraft is on the 176° radial Cardinal directions Radials either side of current position Rotate Selected Course Pointer until deviation bar centers.

22 Will selected course take you toward or away from station? What is your position (radial)?

23 Will selected course take you toward or away from station? What is your position (radial)?

24 ENABLING LEARNING OBJECTIVE E ACTION: Intercept a specific course CONDITIONS: Given a specific course and HSI indications STANDARDS: IAW FM

25 1. Locate radial to be intercepted (190). 2. Convert to course. 3. Rotate course selector knob until point of course selector shows new course (010°). 4. Turn TOWARD the course deviation indicator until course selector is at the 45° index. 5. As deviation bar centers, turn to new course.

26 1. Locate radial to be intercepted (210). 2. Convert to course. 3. Rotate course selector knob until point of course selector points to new course (030°). 4. Turn TOWARD course deviation indicator until course selector is at the 90° index. 5. As deviation bar centers, turn to new course.

27 1. Locate radial / course to be intercepted (025°). 2. Rotate course selector knob until point of course selector shows new course (025°). 3. Turn TOWARD course deviation indicator until course selector is at the 45° index. 4. As deviation bar centers, turn to new course. Intercept the 025 degree Radial Outbound

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29 OZR EUF R-229 R-249

30 Determine your position relative to PETRY 204

31 Determine your position relative to SHADY224

32 NAV STATION PASSAGE

33 ENABLING LEARNING OBJECTIVE F ACTION: Track a specific Magnetic Course CONDITIONS: Given a course and HSI indications STANDARDS: IAW FM

34 Tracking the MGM 126 radial inbound (Airspeed 100 knots) INITIAL CORRECTION 1st TRIAL CORRECTION TOO SMALL REPEAT INITIAL CORRECTION 2nd TRIAL CORRECTION

35 Tracking the MGM 126 radial inbound (Airspeed 100 knots) INITIAL CORRECTION 1st TRIAL CORRECTION TOO LARGE TURN PARALLEL TO COURSE 2nd TRIAL CORRECTION

36 ENABLING LEARNING OBJECTIVE G ACTION: HSI deviation scale. Define the scale for the navigational aid you are using. CONDITIONS: Given a course and HSI indications STANDARDS: IAW FM , AIMS

37 1.LOC (Localizer) = + 2 ½ degrees 2.VOR = + 10 degrees 3.GPS = a.Enroute = + 5 Nm* b.Terminal Area = + 1 Nm c.Approach = Nm - 2 1/2 o -10 o +5 Nm + 1 Nm Nm HSI Deviation Scale + 2 1/2 o Nm -1 Nm - 5 Nm + 10 o * Flight line IP’s usually select 2 Nm; however this is for RNP (Required Navigation Performance) certification which the A/C is NOT certified for.

As of: Oct IFR TH-67’s are equipped with the KI-825. Installations are being completed when aircraft are in phased maintenance. (This is NOT progressing quickly as from Jan 2013 – Oct 2013 only one KI-825 was installed) Simulators will be updated when 50% of our fleet has KI- 825’s installed. (Circa year 2033) Our Fleet: 65 IFR TH-67’s 38 Electronic Horizontal Situation Indicator (EHSI) For more info:

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