In honor of the recent CFM-IATA settlement (which removes CFM’s direct and indirect restrictions on the use of PMA parts and DER repairs in CFM engines), here is a PMA Haiku Continue reading
Yes, you read that title correctly! As part of a settlement, CFM has agreed to permit MROs to use PMA parts and DER repairs, and they have agreed that they will no longer limit the overhaul of engines that have PMA parts and DER repairs. Continue reading
The FAA has published a draft AC for comment. It interprets 14 C.F.R. § 25.901(c) to require an analysis of uncontrollable high engine thrust/power (UHT) failure conditions. If applied to PMA applicants, this could be a tremendous new burden. Continue reading
In January, we wrote in this space about two new FAA Policy Statement proposals aimed at increasing coordination between FAA offices in the cases of certain engine PMA and propeller PMA applications. MARPA is always on the lookout for those potential regulations and policies–whether large or small–that could effect our members. In an effort to … Continue reading
The FAA has released a new draft Advisory Circular that is intended to describe acceptable statistical methods for developing substantiating data for comparative test and analysis compliance findings to support FAA approval of turbine engine and APU parts produced under a PMA, TC, STC, repair or alteration.
Several members have brought this AC to our attention and expressed their concerns about the details of this guidance. We welcome specific comments from members about problems and/or ways to improve this document. Based on member comments we have received so far, the proposed guidance appears likely to discourage applications to produce replacement parts. One reason for this is the large suggested sample size, and associated high costs, necessary to satisfy the proposed statistical analysis metrics. Continue reading
EASA is seeking guidance on how to address PMA parts in engines exposed to volcanic ash. Continue reading
The FAA has made a change to the rules concerning vibration testing (14 C.F.R. § 33.83). The change would require full engine testing of engine parts that are subject to vibration in the aircraft. Continue reading
The Modification and Replacement Parts Association (MARPA) is proud to announce that the FAA’s Mark Bouyer will present a special workshop on endurance, vibration and materials at the 2010 MARPA Conference. Bouyer manages PMA policy questions for the FAA’s Engine Directorate. His presentation will answer many of the questions that the industry has raised about how to show compliance with FAA airworthiness standards related to endurance, vibration and materials. Click through for more details. Continue reading
Under the proposed legislation, new aircraft engine emissions standards could have the potential to seriously impair the ability of air carriers and others to profitably fly aircraft. Continue reading
An OEM tale of “support failure” backfires when the air carrier community explains that they do, in fact, have the data to support “that” configuration. The same carriers also explain that they are pleased with the support they receive from the PMA community. Continue reading
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