Century HSI
Compass System (HSI)
Vacuum (pictured)
The Century NSD-360A combines a vertical compass card and an omni bearing course selector with course deviation for a map-like perspective. This greatly simplifies visualization of position and navigation track. Glideslope indication is presented to the left of the compass card. "Barber-striped" flags provide conspicuous warning indications for NAV, glideslope, and heading. Magnetic slaving is optional.
Electric
The NSD1000 Navigation Situation Display offers the same presentation as the NSD360A instrument. Inside, however, the unit features a built-in electric gyro as well as a self-contained slaving meter. Bootstrap output is an optional feature.
Compass System - Specifications
Century HSIs help pilots spend less time worrying about the complexities of navigating the aircraft and more time enjoying the freedom of flight.
By seeing your position graphically, you receive accurate data at a glance, helping you to navigate confidently and easily in any condition.
Choose from four of the world's best-selling HSI models:
NSD360A Slaved HSI
- The most popular HSI on the market today.
- The best features available in an HSI.
- Simplistic operation.
NSD360A Slaved HSI with RMI Bootstrap
- The top-of-the-line Century pneumatic HSI.
- Provides accurate heading information to other flight instrument displays.
NSD360A Non-Slaved HSI
- The most competitively priced pneumatic HSI on the market today.
- Defines cost-effective HSI performance.
NSD1000 HSI
- The new standard in electric HSIs.
- The only electric HSI that does not require a remote gyro.
- Combines the power of a remote, with the light weight, reliability, and simple installation of a self-contained, one-box instrument.
- Slaving is a standard feature.
- RMI bootstrap is optional.
Features of Century's HSIs:
- Built-in Electric Gyro (NSD1000 only)
- Full-time 360-Degree Heading Presentation
- Rectilinear Course Deviation Indicator
- Full View Glideslope Indicator
- Masking Glideslope Warning Flag
- Built-in Slaving Indicator *
- 45-Degree Tic Marks
- Referencing Heading Bug
- Failed Gyro Warning Flag
- Free Gyro Mode
- Gyro Caging Knob
- Lost Power Warning Flag
- Discrete NAV Warning Flag
- RNAV and LORAN Compatible
- Automatic Magnetic Gyro Slaving *
- Autopilot Outputs for Heading and Course
- Continuously Caged Heading and Course Selection Knobs
- Reference Aircraft and Heading Lubber Line
- Diffused Incandescent Perimeter Lighting
- Course Arrow with Reciprocal Indicators
- TSO's C5e, C6d, C9c, C52a
Dimensions and Weight:
- Height: 3.38 inches
- Width: 3.38 inches
- Panel Cutout: 3-ATI
- Depth: 8.69 inches (NSD360A gyro port and fitting not included.)
- Weight: 4.6 lbs. (instrument only)
Power Requirements:
Accessories:
- Connector Kit
- Slaving Amp or Slaving Bootstrap and Flux Detector *
* Slaved models only.
Compass System - Features
What is an HSI?
An HSI, or Horizontal Situation Indicator, is a combination of two familiar cockpit instruments: the directional gyro with a heading bug and a VOR/ILS indicator.
What does an HSI do for the pilot?
Combining the directional gyro and the NAV indicator into one instrument reduces pilot workload by providing heading, course reference, course deviation, and glideslope information all in one visual aid. In addition, an HSI:
- Makes it easier to visualize the aircraft's position with reference to the selected course or holding patterns. The "split needle" presentation, made up of the course and reciprocal pointers and the VOR/LOC deviation indicators, clearly shows both selected course and course deviation.
- Gives standard sensing and course deviation indication on back course ILS approaches, provided the front course heading is set under the head of the course pointer and the plane is flown toward the course deviation indicator.
- Provides convenient 45-degree tic marks to help visualize procedure turns and reciprocals so that pilots need not memorize outbound/inbound headings or add/subtract 45 degrees for intercepts or offsets.
- Serves as a heading bug for autopilot coupling or as a heading reminder in aircraft not equipped with autopilots.