Airworthiness Directive · Amendment 39-21249 · Attitude and direction data system
Sandia Attitude Indicators
This AD applies to Sandia attitude indicator (attitude indicator) part number 306171-10 and 306171-20. These attitude indicators may be marked as BendixKing Model KI-300 or Sandia Model SAI-340A. They may be installed on airplanes certificated in any category.
The FAA is adopting a new airworthiness directive (AD) for certain Sandia attitude indicators (attitude indicators). This AD was sent previously to all known U.S. owners and operators of aircraft with these attitude indicators installed. This AD requires revising the existing Airplane Flight Manual (AFM) for your airplane to prohibit operation under instrument flight rules (IFR) or night visual flight rules (VFR) and prohibit coupling the autopilot with an affected attitude indicator. This AD was prompted by reports of 54 failed attitude indicators. The FAA is issuing this AD to address the unsafe condition on these products.
(1) Before further flight, revise the limitations section of the existing Airplane Flight Manual for your airplane by inserting a copy of this AD or by making pen and ink changes to add:
(i) “Operation under Instrument Flight Rules or night Visual Flight Rules is prohibited.”
(ii) “Coupling the autopilot with Sandia attitude indicator part number 306171-10 or 306171-20 is prohibited. These attitude indicators may be marked as BendixKing Model KI 300 or Sandia Model SAI 340A.”
(2) The action required by paragraph (g)(1) of this AD may be performed by the owner/operator (pilot) holding at least a private pilot certificate and must be entered into the aircraft records showing compliance with this AD in accordance with 14 CFR 43.9(a)(1) through (4) and 14 CFR 91.417(a)(2)(v). The record must be maintained as required by 14 CFR 91.417. This authority is not applicable to aircraft being operated under 14 CFR part 119.
The aircraft, engines and makers this AD names, by the model designations in its text. A model listed here may still be outside the AD's serial ranges.
Appliances and equipment
