The FAA has issued final special conditionsand a request for comments for a supplemental type certificate on the Pilatus PC-12/45 turboprop. The FAA claims this airplane will have novel and unusual design features, including the installation of two Honeywell Model AM-250 electronic barometric altimeters. The agency claims these units do not contain adequate or appropriate airworthiness standards for the protection of these systems from the effects of high intensity radiated fields (HIRF). The published special conditions — Oct. 31, 2003 — contain the additional safety standards that the FAA considers necessary to establish a level of safety equivalent to the airworthiness standards applicable to these airplanes. All comments must be received on or before Dec. 15, 2003.
Pilatus PC-12
Key Takeaways:
- The FAA has issued final special conditions for a supplemental type certificate (STC) on the Pilatus PC-12/45 turboprop.
- This action is due to novel design features, specifically the installation of Honeywell AM-250 electronic altimeters, which lack adequate protection from High-Intensity Radiated Fields (HIRF).
- The published special conditions establish additional safety standards to ensure a level of safety equivalent to existing airworthiness standards for these airplanes.
- The FAA has requested public comments on these special conditions, to be received by December 15, 2003.
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