On August 28, the FAA published an emergency airworthiness directive (AD) 2020-18-51 for certain Sandia attitude indicators with a part number (P/N) 306171-10 or 306171-20 installed, as well as those marketed as BendixKing Model KI-300 or Sandia Model SAI-340A.
Emergency AD Issued For Sandia & BendixKing Attitude Indicators
Key Takeaways:
- The FAA issued an emergency Airworthiness Directive (AD 2020-18-51) for specific Sandia attitude indicators (P/N 306171-10, 306171-20) and those marketed as BendixKing Model KI-300 or Sandia Model SAI-340A.
- This AD was prompted by multiple failures of these units, which provide erroneous attitude data to pilots and autopilots, potentially leading to unsafe aeronautical decision-making and loss of control.
- Affected aircraft must revise their flight manual before further flight to prohibit operation under IFR or night VFR, and to prevent these units from coupling with the autopilot.
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