123:
111:
20:
134:
system, which was developed to compensate for the errors and limitations of the older type of heading indicators. The two panel-mounted components of a typical system include the HSI and a slaving control and compensator unit, which pilots can set to auto-correct the gyro error using readings from a
68:
On the HSI, the aircraft is represented by a schematic figure in the centre of the instrument – the VOR-ILS display is shown in relation to this figure. The heading indicator is usually slaved to a remote compass and the HSI is frequently interconnected with an
58:(VOR-ILS) display. This reduces pilot workload by lessening the number of elements in the pilot's instrument scan to the six basic flight instruments. Among other advantages, the HSI offers freedom from the confusion of reverse sensing on an
96:. The HSI illustrated here is a type designed for smaller airplanes and is the size of a standard 3 ÂĽ-inch instrument. Airline and jet aircraft HSIs are larger and may include more display elements.
84:
On a conventional VOR indicator, left–right and to–from must be interpreted in the context of the selected course. When an HSI is tuned to a VOR station, left and right always mean left and right and
126:
A slaving control and compensator unit evaluates the data from the slaving transmitter and corrects the heading in HSI when the "slave gyro" mode is enabled.
135:
remotely mounted magnetic slaving transmitter when the system is set to "slave gyro" mode. In a "free gyro" mode, pilots have to manually adjust their HSI.
65:. As long as the needle is set to the localizer front course, the instrument will indicate whether to fly left or right, in either direction of travel.
194:
88:
is indicated by a simple triangular arrowhead pointing to the VOR. If the arrowhead points to the same side as the course selector arrow, it means
454:
236:
182:. United States Department of Transportation, Federal Aviation Administration, Airman Testing Standards Branch. 2012. pp. 5–23, 7–38.
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114:
A magnetic slaving transmitter in a remote indicating compass detects the magnetic field of the Earth via a
1344:
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23:
Illustration of the face of a horizontal situation indicator showing the key elements of the display
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92:, and if it points behind to the side opposite the course selector, it means
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99:
The most modern HSI displays are electronic and often integrated with
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capable of following the heading select bug and of executing an
722:
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604:
534:
1145:
747:
599:
462:
1397:
179:Instrument Flying Handbook 2012 (FAA-H-8083-15B)
172:
170:
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230:
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455:
441:
237:
223:
196:Pilot's Handbook of Aeronautical Knowledge
50:. It combines a heading indicator with a
203:. 2016-08-24. p. 21. Archived from
121:
109:
77:approach by following the localizer and
18:
1398:
244:
145:Acronyms and abbreviations in avionics
436:
218:
407:Integrated standby instrument system
101:electronic flight instrument systems
60:instrument landing system localizer
13:
16:Aircraft heading flight instrument
14:
1427:
193:"Chapter 8: Flight Instruments".
382:Air data inertial reference unit
1411:Navigational flight instruments
201:Federal Aviation Administration
1365:In-flight entertainment system
1062:Horizontal situation indicator
346:Horizontal situation indicator
305:Horizontal situation indicator
186:
29:horizontal situation indicator
1:
1345:Environmental control system
7:
199:(FAA-H-8083-25B ed.).
138:
46:in place of a conventional
42:normally mounted below the
10:
1432:
1022:Course deviation indicator
713:Electro-hydraulic actuator
351:Inertial navigation system
341:Course deviation indicator
1312:
1291:
1253:Conventional landing gear
1224:
1120:
955:
821:
658:
474:
374:
328:
285:
252:
132:remote indicating compass
56:instrument landing system
52:VHF omnidirectional range
1037:Flight management system
160:
155:Radio magnetic indicator
1340:Emergency oxygen system
1102:Turn and slip indicator
897:Leading-edge droop flap
867:Drag-reducing aerospike
842:Adaptive compliant wing
837:Active Aeroelastic Wing
310:Turn and slip indicator
1380:Passenger service unit
1181:Self-sealing fuel tank
1077:Multi-function display
412:Primary flight display
127:
119:
24:
1360:Ice protection system
1278:Tricycle landing gear
1268:Landing gear extender
485:Aft pressure bulkhead
125:
116:fluxgate magnetometer
113:
31:(commonly called the
22:
1325:Auxiliary power unit
733:Flight control modes
361:Satellite navigation
63:back course approach
1304:Escape crew capsule
1211:War emergency power
1082:Pitot–static system
927:Variable-sweep wing
635:Vertical stabilizer
1012:Attitude indicator
992:Airspeed indicator
987:Aircraft periscope
336:Aircraft periscope
295:Attitude indicator
267:Airspeed indicator
246:Flight instruments
150:Flight instruments
128:
120:
44:artificial horizon
25:
1393:
1392:
1320:Aircraft lavatory
1057:Heading indicator
1002:Annunciator panel
982:Air data computer
892:Leading-edge cuff
430:
429:
300:Heading indicator
130:HSI is part of a
48:heading indicator
40:flight instrument
1423:
1416:Radio navigation
1375:Navigation light
1355:Hydraulic system
1330:Bleed air system
1258:Drogue parachute
932:Vortex generator
550:Interplane strut
457:
450:
443:
434:
433:
356:Magnetic compass
315:Turn coordinator
239:
232:
225:
216:
215:
209:
208:
190:
184:
183:
174:
103:into so-called "
1431:
1430:
1426:
1425:
1424:
1422:
1421:
1420:
1396:
1395:
1394:
1389:
1385:Ram air turbine
1350:Flight recorder
1308:
1287:
1220:
1201:Thrust reversal
1125:
1116:
1087:Radar altimeter
1052:Head-up display
962:
951:
847:Anti-shock body
829:
817:
678:Artificial feel
660:Flight controls
654:
520:Fabric covering
470:
466:components and
461:
431:
426:
402:Head-up display
370:
324:
281:
248:
243:
213:
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192:
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187:
176:
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141:
17:
12:
11:
5:
1429:
1419:
1418:
1413:
1408:
1391:
1390:
1388:
1387:
1382:
1377:
1372:
1370:Landing lights
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1337:
1332:
1327:
1322:
1316:
1314:
1310:
1309:
1307:
1306:
1301:
1295:
1293:
1292:Escape systems
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1286:
1285:
1280:
1275:
1270:
1265:
1260:
1255:
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1230:arresting gear
1222:
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1188:
1186:Splitter plate
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505:Cruciform tail
502:
500:Crack arrestor
497:
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375:Related topics
372:
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369:
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363:
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330:
326:
325:
323:
322:
320:Turn indicator
317:
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258:
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207:on 2023-06-20.
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1323:
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1318:
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1315:
1313:Other systems
1311:
1305:
1302:
1300:
1299:Ejection seat
1297:
1296:
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1290:
1284:
1281:
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1244:
1243:Arrestor hook
1241:
1239:
1238:Aircraft tire
1236:
1235:
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1043:
1042:Glass cockpit
1040:
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988:
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977:Air data boom
975:
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758:Rudder pedals
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615:Trailing edge
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595:Stressed skin
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397:Glass cockpit
395:
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156:
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136:
133:
124:
117:
112:
108:
106:
105:glass cockpit
102:
97:
95:
91:
87:
82:
80:
76:
72:
66:
64:
61:
57:
53:
49:
45:
41:
38:
34:
30:
21:
1335:Deicing boot
1263:Landing gear
1206:Townend ring
1196:Thrust lever
1171:NACA cowling
1136:Autothrottle
1128:fuel systems
1126:devices and
1061:
917:Stall strips
887:Krueger flap
857:Channel wing
803:Wing warping
793:Stick shaker
788:Stick pusher
708:Dual control
693:Centre stick
560:Leading edge
530:Flying wires
490:Cabane strut
345:
329:Navigational
304:
254:Pitot-static
205:the original
195:
188:
178:
131:
129:
98:
93:
89:
85:
83:
67:
32:
28:
26:
1283:Tundra tire
1166:Intake ramp
1097:Transponder
882:Gurney flap
823:Aerodynamic
738:Fly-by-wire
620:Triple tail
107:" systems.
79:glide slope
1400:Categories
1273:Oleo strut
1161:Inlet cone
1156:Gascolator
1122:Propulsion
1112:Yaw string
1107:Variometer
963:instrument
942:Wing fence
877:Gouge flap
852:Blown flap
808:Yaw damper
783:Stabilator
768:Side-stick
703:Dive brake
590:Stabilizer
565:Lift strut
555:Jury strut
422:Yaw string
287:Gyroscopic
277:Variometer
1248:Autobrake
1176:NACA duct
1151:Fuel tank
1141:Drop tank
1124:controls,
1007:Astrodome
997:Altimeter
862:Dog-tooth
827:high-lift
778:Spoileron
763:Servo tab
743:Gust lock
698:Deceleron
683:Autopilot
640:Wing root
625:Twin tail
610:Tailplane
545:Hardpoint
515:Empennage
478:structure
272:Machmeter
262:Altimeter
71:autopilot
1406:Avionics
1216:Wet wing
1191:Throttle
937:Vortilon
798:Trim tab
728:Flaperon
718:Elevator
673:Airbrake
645:Wing tip
570:Longeron
540:Fuselage
476:Airframe
464:Aircraft
417:V speeds
139:See also
37:aircraft
35:) is an
1226:Landing
1017:Compass
965:systems
957:Avionic
947:Winglet
830:devices
773:Spoiler
668:Aileron
650:Wingbox
575:Nacelle
525:Fairing
468:systems
86:TO/FROM
961:flight
922:Strake
753:Rudder
723:Elevon
688:Canard
630:V-tail
605:T-tail
535:Former
495:Canopy
1146:FADEC
1032:EICAS
907:Slats
748:HOTAS
600:Strut
161:Notes
1228:and
1092:TCAS
1072:ISIS
1027:EFIS
972:ACAS
959:and
912:Slot
872:Flap
825:and
813:Yoke
585:Spar
510:Dope
392:EFIS
387:ECAM
366:SIGI
94:FROM
27:The
1067:INS
1047:GPS
902:LEX
580:Rib
75:ILS
33:HSI
1402::
169:^
90:TO
81:.
456:e
449:t
442:v
238:e
231:t
224:v
118:.
54:-
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