# Registered aircraft: TCDS 1E4

A list on [TCDS 1E4](https://openairdocs.org/tcds/1E4.md).

Registry models that point at this data sheet: 7,585 registered aircraft in all. Each model’s page lists its aircraft.

- [Lycoming IO-540 series](https://openairdocs.org/engine/lycoming-io-540-series.md): 4,219 registered aircraft · Registry codes 41530, 41585
- [Lycoming IO-540-AE1A5](https://openairdocs.org/engine/lycoming-io-540-ae1a5.md): 1,040 registered aircraft · Registry code 41899
- [Lycoming IO-540-AB1A5](https://openairdocs.org/engine/lycoming-io-540-ab1a5.md): 773 registered aircraft · Registry code 41808
- [Lycoming AEIO-540 series](https://openairdocs.org/engine/lycoming-aeio-540-series.md): 433 registered aircraft · Registry code 41568
- [Lycoming IO-540-D4A5](https://openairdocs.org/engine/lycoming-io-540-d4a5.md): 237 registered aircraft · Registry code 41798
- [Lycoming IO-540-C4B5](https://openairdocs.org/engine/lycoming-io-540-c4b5.md): 179 registered aircraft · Registry code 41651
- [Lycoming AEIO-540-D4A5](https://openairdocs.org/engine/lycoming-aeio-540-d4a5.md): 57 registered aircraft · Registry code 41799
- [Lycoming AEIO-540-L1B5](https://openairdocs.org/engine/lycoming-aeio-540-l1b5.md): 56 registered aircraft · Registry code 41792
- [Lycoming IO-540-K1G5D](https://openairdocs.org/engine/lycoming-io-540-k1g5d.md): 52 registered aircraft · Registry code 41598
- [Lycoming IO-540-AC1A5](https://openairdocs.org/engine/lycoming-io-540-ac1a5.md): 50 registered aircraft · Registry code 41809
- [Lycoming IO-540-K1G5](https://openairdocs.org/engine/lycoming-io-540-k1g5.md): 48 registered aircraft · Registry code 41674
- [Lycoming IO-540-K1A5](https://openairdocs.org/engine/lycoming-io-540-k1a5.md): 44 registered aircraft · Registry code 41663
- [Lycoming AEIO540-L1B5D](https://openairdocs.org/engine/lycoming-aeio540-l1b5d.md): 41 registered aircraft · Registry code 41791
- [Lycoming IO-540-V4A5D](https://openairdocs.org/engine/lycoming-io-540-v4a5d.md): 39 registered aircraft · Registry code 41807
- [Lycoming IO-540-C4D5D](https://openairdocs.org/engine/lycoming-io-540-c4d5d.md): 31 registered aircraft · Registry code 41652
- [Lycoming IO-540-W1A5](https://openairdocs.org/engine/lycoming-io-540-w1a5.md): 31 registered aircraft · Registry code 41660
- [Lycoming IO-540-G1D5](https://openairdocs.org/engine/lycoming-io-540-g1d5.md): 26 registered aircraft · Registry code 41644
- [Aerosport IO-540-D4A5](https://openairdocs.org/engine/aerosport-io-540-d4a5.md): 25 registered aircraft · Registry code 01308
- [Lycoming IO-540-L1C5](https://openairdocs.org/engine/lycoming-io-540-l1c5.md): 18 registered aircraft · Registry code 41782
- [Lycoming IO-540-K1B5](https://openairdocs.org/engine/lycoming-io-540-k1b5.md): 17 registered aircraft · Registry codes 41665, 42718
- [Lycoming IO-540-T4B5](https://openairdocs.org/engine/lycoming-io-540-t4b5.md): 17 registered aircraft · Registry code 41804
- [Lycoming IO-540-A1A5](https://openairdocs.org/engine/lycoming-io-540-a1a5.md): 16 registered aircraft · Registry code 41634
- [Lycoming IO-540-D4B5](https://openairdocs.org/engine/lycoming-io-540-d4b5.md): 13 registered aircraft · Registry code 41794
- [Lycoming IO-540-K1J5](https://openairdocs.org/engine/lycoming-io-540-k1j5.md): 10 registered aircraft · Registry code 41676
- [Lycoming IO-540-S1A5](https://openairdocs.org/engine/lycoming-io-540-s1a5.md): 10 registered aircraft · Registry code 41788
- [Lycoming IO-540-C1B5](https://openairdocs.org/engine/lycoming-io-540-c1b5.md): 9 registered aircraft · Registry code 41649
- [Lycoming IO-540-J4A5](https://openairdocs.org/engine/lycoming-io-540-j4a5.md): 9 registered aircraft · Registry code 41655
- [Lycoming IO-540-AA1A5](https://openairdocs.org/engine/lycoming-io-540-aa1a5.md): 8 registered aircraft · Registry code 41661
- [Lycoming IO-540-W1A5D](https://openairdocs.org/engine/lycoming-io-540-w1a5d.md): 8 registered aircraft · Registry code 41658
- [Lycoming IO-540-G1A5](https://openairdocs.org/engine/lycoming-io-540-g1a5.md): 7 registered aircraft · Registry code 41641
- [Lycoming IO-540-N1A5](https://openairdocs.org/engine/lycoming-io-540-n1a5.md): 7 registered aircraft · Registry code 41796
- [Lycoming IO-540-K1E5](https://openairdocs.org/engine/lycoming-io-540-k1e5.md): 5 registered aircraft · Registry code 41671
- [Lycoming IO-540-B1A5](https://openairdocs.org/engine/lycoming-io-540-b1a5.md): 4 registered aircraft · Registry code 41635
- [Lycoming IO-540-E1A5](https://openairdocs.org/engine/lycoming-io-540-e1a5.md): 4 registered aircraft · Registry code 41638
- [Lycoming IO-540-E1B5](https://openairdocs.org/engine/lycoming-io-540-e1b5.md): 4 registered aircraft · Registry code 41639
- [Lycoming IO-540-L1B5D](https://openairdocs.org/engine/lycoming-io-540-l1b5d.md): 4 registered aircraft · Registry code 41781
- [Lycoming IO-540-P1A5](https://openairdocs.org/engine/lycoming-io-540-p1a5.md): 4 registered aircraft · Registry code 41647
- [Lycoming IO-540-T4A5D](https://openairdocs.org/engine/lycoming-io-540-t4a5d.md): 4 registered aircraft · Registry code 41803
- [Lycoming AEIO-540-D4B5](https://openairdocs.org/engine/lycoming-aeio-540-d4b5.md): 3 registered aircraft · Registry code 41800
- [Lycoming IO-540-G1B5](https://openairdocs.org/engine/lycoming-io-540-g1b5.md): 3 registered aircraft · Registry code 41642
- [Lycoming IO-540-G1C5](https://openairdocs.org/engine/lycoming-io-540-g1c5.md): 3 registered aircraft · Registry code 41643
- [Lycoming IO-540-K1A5D](https://openairdocs.org/engine/lycoming-io-540-k1a5d.md): 3 registered aircraft · Registry code 41664
- [Lycoming HIO-540-A1A](https://openairdocs.org/engine/lycoming-hio-540-a1a.md): 2 registered aircraft · Registry code 41648
- [Lycoming IO-540-K1F5](https://openairdocs.org/engine/lycoming-io-540-k1f5.md): 2 registered aircraft · Registry code 41672
- [Lycoming IO-540-K1H5](https://openairdocs.org/engine/lycoming-io-540-k1h5.md): 2 registered aircraft · Registry code 41675
- [Lycoming IO-540-M1B5D](https://openairdocs.org/engine/lycoming-io-540-m1b5d.md): 2 registered aircraft · Registry code 41785
- [Lycoming IO-540-M1C5](https://openairdocs.org/engine/lycoming-io-540-m1c5.md): 2 registered aircraft · Registry code 41786
- [Lycoming IO-540-C2C](https://openairdocs.org/engine/lycoming-io-540-c2c.md): 1 registered aircraft · Registry code 41653
- [Lycoming IO-540-D4C5](https://openairdocs.org/engine/lycoming-io-540-d4c5.md): 1 registered aircraft · Registry code 41795
- [Lycoming IO-540-K1C5](https://openairdocs.org/engine/lycoming-io-540-k1c5.md): 1 registered aircraft · Registry code 41668
- [Lycoming IO-540-R1A5](https://openairdocs.org/engine/lycoming-io-540-r1a5.md): 1 registered aircraft · Registry code 41797
- [Lycoming AEIO-540-D4C5](https://openairdocs.org/engine/lycoming-aeio-540-d4c5.md): 0 registered aircraft · Registry code 41801
- [Lycoming AEIO-540-D4D5](https://openairdocs.org/engine/lycoming-aeio-540-d4d5.md): 0 registered aircraft · Registry code 41802
- [Lycoming AEIO-540-L1D5](https://openairdocs.org/engine/lycoming-aeio-540-l1d5.md): 0 registered aircraft · Registry code 41793
- [Lycoming IO-540-AA1B5](https://openairdocs.org/engine/lycoming-io-540-aa1b5.md): 0 registered aircraft · Registry code 41662
- [Lycoming IO-540-B1B5](https://openairdocs.org/engine/lycoming-io-540-b1b5.md): 0 registered aircraft · Registry code 41636
- [Lycoming IO-540-B1C5](https://openairdocs.org/engine/lycoming-io-540-b1c5.md): 0 registered aircraft · Registry code 41637
- [Lycoming IO-540-C1C5](https://openairdocs.org/engine/lycoming-io-540-c1c5.md): 0 registered aircraft · Registry code 41650
- [Lycoming IO-540-C4B5D](https://openairdocs.org/engine/lycoming-io-540-c4b5d.md): 0 registered aircraft · Registry code 41657
- [Lycoming IO-540-C4C5](https://openairdocs.org/engine/lycoming-io-540-c4c5.md): 0 registered aircraft · Registry code 41654
- [Lycoming IO-540-C4D5](https://openairdocs.org/engine/lycoming-io-540-c4d5.md): 0 registered aircraft · Registry code 41656
- [Lycoming IO-540-E1C5](https://openairdocs.org/engine/lycoming-io-540-e1c5.md): 0 registered aircraft · Registry code 41640
- [Lycoming IO-540-G1E5](https://openairdocs.org/engine/lycoming-io-540-g1e5.md): 0 registered aircraft · Registry code 41645
- [Lycoming IO-540-G1F5](https://openairdocs.org/engine/lycoming-io-540-g1f5.md): 0 registered aircraft · Registry code 41646
- [Lycoming IO-540-K1B5D](https://openairdocs.org/engine/lycoming-io-540-k1b5d.md): 0 registered aircraft · Registry code 41667
- [Lycoming IO-540-K1D5](https://openairdocs.org/engine/lycoming-io-540-k1d5.md): 0 registered aircraft · Registry code 41669
- [Lycoming IO-540-K1E5D](https://openairdocs.org/engine/lycoming-io-540-k1e5d.md): 0 registered aircraft · Registry code 41670
- [Lycoming IO-540-K1F5D](https://openairdocs.org/engine/lycoming-io-540-k1f5d.md): 0 registered aircraft · Registry code 41673
- [Lycoming IO-540-K1K5](https://openairdocs.org/engine/lycoming-io-540-k1k5.md): 0 registered aircraft · Registry code 41677
- [Lycoming IO-540-K2A5](https://openairdocs.org/engine/lycoming-io-540-k2a5.md): 0 registered aircraft · Registry code 41666
- [Lycoming IO-540-L1A5](https://openairdocs.org/engine/lycoming-io-540-l1a5.md): 0 registered aircraft · Registry code 41679
- [Lycoming IO-540-L1A5D](https://openairdocs.org/engine/lycoming-io-540-l1a5d.md): 0 registered aircraft · Registry code 41680
- [Lycoming IO-540-M1A5](https://openairdocs.org/engine/lycoming-io-540-m1a5.md): 0 registered aircraft · Registry code 41783
- [Lycoming IO-540-M1A5D](https://openairdocs.org/engine/lycoming-io-540-m1a5d.md): 0 registered aircraft · Registry code 41784
- [Lycoming IO-540-M2A5D](https://openairdocs.org/engine/lycoming-io-540-m2a5d.md): 0 registered aircraft · Registry code 41787
- [Lycoming IO-540-T4C5D](https://openairdocs.org/engine/lycoming-io-540-t4c5d.md): 0 registered aircraft · Registry code 41805
- [Lycoming IO-540-U1A5D](https://openairdocs.org/engine/lycoming-io-540-u1a5d.md): 0 registered aircraft · Registry code 41789
- [Lycoming IO-540-U1B5D](https://openairdocs.org/engine/lycoming-io-540-u1b5d.md): 0 registered aircraft · Registry code 41790
- [Lycoming IO-540-W3A5D](https://openairdocs.org/engine/lycoming-io-540-w3a5d.md): 0 registered aircraft · Registry code 41659

## The whole list in SQL

Runs in DuckDB 1.2 or later on the release's Parquet files over HTTPS:

```sql
-- One row per registry model code; the page joins codes that share a name
SELECT 'engine' AS kind, m.code, m.manufacturer, m.model, count(g.n_number) AS aircraft
FROM 'https://openairdocs.org/data/latest/faa_engine_model.parquet' m LEFT JOIN 'https://openairdocs.org/data/latest/faa_aircraft_registration.parquet' g ON g.engine_model_code = m.code
WHERE m.code IN (SELECT code FROM 'https://openairdocs.org/data/latest/faa_engine_model.parquet' WHERE tcds_number = '1E4')
GROUP BY ALL
ORDER BY aircraft DESC, code
```

This list as a web page: https://openairdocs.org/tcds/1E4/aircraft

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