Model: ADI-350AB

L3 Technologies - Attitude Indicator
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Part Number :

  • Military Self-Contained 3" Gyro
  • Night Vision Goggle (NVG) Compatible
  • Direct mechanical linkage eliminates electrical servo response lag
  • 28 VDC operation (18 to 30 VDC)
  • Self-contained lateral and fore/aft acceleration compensation
  • Power Off warning flag
  • Wheel speed monitoring
  • Bottom role scale option
  • Designed to MIL standards


Part NumberModel:Gyro Description:
501-1458-01 ADI-350S 115/208v 3-Phase, 5V Lights, ILS, Slip, Synchros, 0°
501-1549-01 ADI-350AB 5V NVG Lights, R.O.T. Pointer, Slip, 15° Panel
501-1617-01 ADI-350AH NVG Lights, Synchro Output, 15° Panel
501-1664-01 ADI-350AT 115/208V 3-Phase, 5V White Lights, R.O.T., ILS Needles
501-1665-01 ADI-350AU 115/208V 3-Phase, 5V NVG Lights, R.O.T., ILS Needles
501-1742-01 ADI-350BE 5V Red Lights, 21° Panel
501-1809-01 ADI-350BN 5V NVG Lights, R.O.T. Pointer, Slip, Trimmable, 15°


- Attitude Indicator
Price Condition Delivery

SEA Repair Capabilities: No

Click on a question below to see the answer. If you have a question about this model that is not answered below, please contact

No, not all and they could be damaged if you do.

Many legacy electromechnical attitude gyroscopic instruments include a caging device to hold the gimbals in place and 'force' the gyro gimbals to return to their home position. This instantly erects or resets the unit by pulling the caging knob. Some caged gyros include a cage lock mechanism, some do not. Some people believe that a cage-able gyro should always be in the locked position when handling, transportation, or storage takes place. This is not always the case.

For example, L3, manufacturers of the legacy AIM gyro product line, specifically indicate in their installation manuals and service letters that "instruments without cage locking mechanisms are designed to be shipped in an uncaged condition...using external locking devices to cage the indicator may result in damaging the caging system...". Southeast Aerospace has seen many people use external means to force a cage lock such as a spacer wedged between the extended shaft and knob. As indicated by L3 (AIM), this could very well damage the unit since you are forcing it to do something it might not have been made to do.

Most, if not all, gyro manufactures have detailed instructions within their installation and operation manuals that indicate how a specific model instrument should be handled, transported, and stored. This includes instructions on whether or not to cage lock the instrument or not. Always follow the manufacturer's instructions.

(Cage-able but does not have cage lock locking mechanism)

(Cage-able but has cage lock)