FAA-PMA
55128 is an FAA-PMA part held by Hartzell Engine Technologies LLC (PMA PQ1383CE) — approved as a replacement for 646187 on Continental Aerospace Technologies Inc.. LTSIO-520-AE1B | LTSIO-520-AE2A | LTSIO-520-AE2B | LTSIO-520-AE3A | LTSIO-520-AE3B | LTSIO-520-AE4B | LTSIO-520-AE5B | LTSIO-520-AE6B | LTSIO-520-AE7B | TSIO-520-AE1A · Current, Sep 2025.
A PMA part is approved for the specific eligibility listed on its FAA record; whether it may go on a particular aircraft, engine or component is the installer's determination from that record and the eligibility list. A part-number match alone does not establish eligibility. Source: FAA DRS PMA database, refreshed weekly. Data, not advice.
55128 is cataloged as BALL,BEARING. It carries 4 NSN identities and cross-references to 10 related part numbers. FAA PMA approval is on file from Hartzell Engine Technologies LLC. The part appears on MCRL cross-reference data.
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