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Lycoming AEIO-/IO-540

Variants:   AEIO-540-D4A5, AEIO-540-D4B5, AEIO-540-D4C5, AEIO-540-D4D5, AEIO-540-L1B5, AEIO-540-L1B5D, AEIO-540-L1D5, IO-540-A1A5, IO-540-AA1A5, IO-540-AA1B5, IO-540-AB1A5, IO-540-AC1A5, IO-540-AE1A5, IO-540-B1A5, IO-540-B1B5, IO-540-B1C5, IO-540-C1B5, IO-540-C1C5, IO-540-C2C, IO-540-C4B5, IO-540-C4B5D, IO-540-C4C5, IO-540-C4D5, IO-540-C4D5D, IO-540-D4A5, IO-540-D4B5, IO-540-D4C5, IO-540-E1A5, IO-540-E1B5, IO-540-E1C5, IO-540-G1A5, IO-540-G1B5, IO-540-G1C5, IO-540-G1D5, IO-540-G1E5, IO-540-G1F5, IO-540-J4A5, IO-540-K1A5, IO-540-K1A5D, IO-540-K1B5, IO-540-K1B5D, IO-540-K1C5, IO-540-K1D5, IO-540-K1E5, IO540-K1E5D, IO-540-K1F5, IO-540-K1F5D, IO-540-K1G5, IO-540-K1G5D, IO-540-K1H5, IO-540-K1J5, IO-540-K1J5D, IO-540-K1K5, IO-540-K2A5, IO-540-L1A5, IO-540-L1A5D, IO-540-L1B5D, IO-540-L1C5, IO-540-M1A5, IO-540-M1A5D, IO-540-M1B5D, IO-540-M1C5, IO-540-M2A5D, IO-540-N1A5, IO-540-P1A5, IO-540-R1A5, IO-540-S1A5, IO-540-T4A5D, IO-540-T4B5, IO-540-T4B5D, IO-540-T4C5D, IO-540-U1A5D, IO-540-U1B5D, IO-540-V4A5, IO-540-V4A5D, IO-540-W1A5, IO-540-W1A5D, IO-540-W3A5D

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News from Business Air News
Lycoming Engines introduces extended 2,600 hour TBO
July 26, 2026
SI 1009BF expands TBO intervals to 2600 hours for a broad range of Lycoming factory‑new and factory‑rebuilt engines. Benefits include lower operating costs, greater aircraft availability and proven performance.
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