Parts manufacturer approval parts have established a small but strong beachhead in the global market for aircraft parts. Neutral observers expect current annual PMA revenue of $350-$400 million to increase 80%-100% in the next five years. The exact pace and shape of expansion is still unclear. Hurdles to wider usage of airframe and component PMAs have fallen or weakened, but some engine hurdles have strengthened even as alternative suppliers have entered new areas, such as life-limited engine parts. PMA firms are larger and more sophisticated and have developed partnerships with airlines and shops.
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