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FAA PMA replacements for

AT6421R1

4 approvals from 3 holders

See the OEM part record for AT6421R1 →

Approved PMA parts

PMA part numberHolderStatusSupplementPart name
AT6421R1ADS/TranscoilCurrent2010-05-20Clock
AT6421R1ADS/TranscoilCurrent2005-07-06Clock
AT6421R1Astrotech CorpCurrent1995-05-29Clock
AT6421R1Allard Industries Inc, Aerospace Display SysCurrent1992-12-31Clock
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PMA parts for AT6421R1 — 4 FAA approvals - Fulcrum 360