Turboprops and Icing
Did you know that the Q400 and the ATR and the Airbus A 380 are all certified on the same icing standard, Appendix C, which was drawn up in the 1950s, based on research conducted in 1948. The NTSB has been clamouring since Roselawn to have it revised and brought up to date but, apart from commissioning loads of research from NASA, the FAA has really done very little on the issue. Since Appendix C was written the body of knowledge on icing has expanded exponentially but very litle of it is finding its way into certification. All turboprops, despite enlarged leading edge boots, or heating, are still very vulnerable.
Be careful out there ...