Airworthiness Directive · Amendment 39-19004 · Lights
Saab AB, Saab Aeronautics (Formerly Known as Saab AB, Saab Aerosystems) Airplanes
This AD applies to Saab AB, Saab Aeronautics Model 340A (SAAB/SF340A) airplanes, certificated in any category, serial numbers 004 through 138 inclusive; except those on which Saab Service Bulletin 340-33-053 (modification/removal for cargo/freighter configuration) has been embodied.
We are adopting a new airworthiness directive (AD) for certain Saab AB, Saab Aeronautics Model 340A (SAAB/SF340A) airplanes. This AD was prompted by the discovery of circuit breakers of unsuitable strength that fail to protect the system from an overcurrent. This AD requires replacing certain circuit breakers. We are issuing this AD to address the unsafe condition on these products.
Within 6 months after the effective date of this AD: Replace any circuit breaker having part number (P/N) MS3320-10 installed at position 2LJ (L25) and position 4LJ (L26) with a circuit breaker having P/N MS3320-7-5, in accordance with the Accomplishment Instructions of Saab Service Bulletin 340-33-058, Revision 01, dated October 21, 2016.
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.
Aircraft
