Aerosonic Instantaneous Vertical Speed Indicator

The Aerosonic Instantaneous Vertical Speed Indicator is a panel-mounted instrument that monitors atmospheric pressure variations to provide pilots with immediate rate-of-climb and rate-of-descent calculations. Unlike standard VSIs that suffer from a brief mechanical delay when a climb or descent is initiated, this unit utilizes an internal accelerometer mechanism to deliver instantaneous vertical velocity feedback. It features a high-contrast mechanical face with matte white indicators on a dull black background.

Description

This unit has been bench tested by an FAA certified repair station and it comes with an 8130 single release dated 7/21/2026.

Key Technical Capabilities
  • Instantaneous Inertial Lead: Incorporates internal, acceleration-actuated pistons that create an immediate pressure differential the moment the aircraft pitches. This mechanics removes the typical 2-to-3 second lag found in basic pneumatic rate-of-climb gauges.
  • Logarithmic Dial Configuration: The dial face is graduated in high-resolution 100 feet-per-minute (fpm) increments from 0 up to 1,000 feet, shifting to wider 500 fpm increments from 1,000 out to a maximum display limit of 6,000 fpm.
  • Integrated Panel Lighting Options: Equipped with internal instrument lighting configurations tailored for corporate flight decks. When integrated into aircraft like the Cessna Citation, it utilizes standard 5 VAC cockpit illumination loops.
  • Hermetically Sealed Casing: Built inside a rugged, airtight aluminum cylinder housing with a static pressure port connector mounted on the rear casing, preventing cabin pressure fluctuations from interfering with accurate core readings.
  • Standard Instrument Panel Footprint: Formulated as a direct replacement unit meant for standard 3-1/8 inch cockpit panel cutouts, featuring a manual zero-adjustment calibration screw positioned on the lower left bezel.

Additional information

Part Number

30260-1117

Serial Number

W15679H

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