# STC SE01954SE

- Type: Supplemental type certificate
- Status: Current, Amended
- Holder: Ly-Con Rebuilding Company, United States
- Description: Installation of engine crankcase seal.
- Applied: December 13, 2007
- Status date: November 14, 2024
- Product: Engine
- Certification basis: Part 33
- Data sheets: [TCDS 1E4](https://openairdocs.org/tcds/1E4), [TCDS E-295](https://openairdocs.org/tcds/E-295), [TCDS E00004NY](https://openairdocs.org/tcds/E00004NY), [TCDS E14EA](https://openairdocs.org/tcds/E14EA), [TCDS 1E12](https://openairdocs.org/tcds/1E12), [TCDS 1E10](https://openairdocs.org/tcds/1E10), [TCDS E-286](https://openairdocs.org/tcds/E-286), [TCDS E-274](https://openairdocs.org/tcds/E-274), [TCDS E-228](https://openairdocs.org/tcds/E-228), [TCDS E-275](https://openairdocs.org/tcds/E-275), [TCDS E-284](https://openairdocs.org/tcds/E-284), [TCDS 1E11](https://openairdocs.org/tcds/1E11), [TCDS 1E7](https://openairdocs.org/tcds/1E7), [TCDS 1E1](https://openairdocs.org/tcds/1E1), [TCDS E11EA](https://openairdocs.org/tcds/E11EA), [TCDS E26EA](https://openairdocs.org/tcds/E26EA), [TCDS E-229](https://openairdocs.org/tcds/E-229), [TCDS E-277](https://openairdocs.org/tcds/E-277), [TCDS E16EA](https://openairdocs.org/tcds/E16EA), [TCDS 1E14](https://openairdocs.org/tcds/1E14) and 3 more
- Certificate PDF: https://openairdocs.org/files/sha256/42/bd/42bd82962a6e7995466e5f9d51fa1c431ba5c6df6fd2fa776774e9725c2cc649
- Approved model list and other attachments: [SE01954SE_AML.pdf](https://openairdocs.org/files/sha256/b3/ff/b3ff40d52f8aa1e30586bc49829cbc2406994490244c973dba0d632c21eef753)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID108516833220241120152903.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SE01954SE

## ADs that name it (0)

None.

## Approved models (572, first 50)

- Lycoming Engines AEIO-320-D1B ([TCDS 1E12](https://openairdocs.org/tcds/1E12))
- Lycoming Engines AEIO-320-D2B ([TCDS 1E12](https://openairdocs.org/tcds/1E12))
- Lycoming Engines AEIO-320-E1A ([TCDS 1E12](https://openairdocs.org/tcds/1E12))
- Lycoming Engines AEIO-320-E1B ([TCDS 1E12](https://openairdocs.org/tcds/1E12))
- Lycoming Engines AEIO-320-E2A ([TCDS 1E12](https://openairdocs.org/tcds/1E12))
- Lycoming Engines AEIO-320-E2B ([TCDS 1E12](https://openairdocs.org/tcds/1E12))
- Lycoming Engines AEIO-360-A1A ([TCDS 1E10](https://openairdocs.org/tcds/1E10))
- Lycoming Engines AEIO-360-A1B ([TCDS 1E10](https://openairdocs.org/tcds/1E10))
- Lycoming Engines AEIO-360-A1B6 ([TCDS 1E10](https://openairdocs.org/tcds/1E10))
- Lycoming Engines AEIO-360-A1C ([TCDS 1E10](https://openairdocs.org/tcds/1E10))
- Lycoming Engines AEIO-360-A1D ([TCDS 1E10](https://openairdocs.org/tcds/1E10))
- Lycoming Engines AEIO-360-A1E ([TCDS 1E10](https://openairdocs.org/tcds/1E10))
- Lycoming Engines AEIO-360-A1E6 ([TCDS 1E10](https://openairdocs.org/tcds/1E10))
- Lycoming Engines AEIO-360-A2A ([TCDS 1E10](https://openairdocs.org/tcds/1E10))
- Lycoming Engines AEIO-360-A2B ([TCDS 1E10](https://openairdocs.org/tcds/1E10))
- Lycoming Engines AEIO-360-A2C ([TCDS 1E10](https://openairdocs.org/tcds/1E10))
- Lycoming Engines AEIO-360-B1B ([TCDS 1E10](https://openairdocs.org/tcds/1E10))
- Lycoming Engines AEIO-360-B1D ([TCDS 1E10](https://openairdocs.org/tcds/1E10))
- Lycoming Engines AEIO-360-B1F ([TCDS 1E10](https://openairdocs.org/tcds/1E10))
- Lycoming Engines AEIO-360-B1F6 ([TCDS 1E10](https://openairdocs.org/tcds/1E10))
- Lycoming Engines AEIO-360-B1G6 ([TCDS 1E10](https://openairdocs.org/tcds/1E10))
- Lycoming Engines AEIO-360-B1H ([TCDS 1E10](https://openairdocs.org/tcds/1E10))
- Lycoming Engines AEIO-360-B2F ([TCDS 1E10](https://openairdocs.org/tcds/1E10))
- Lycoming Engines AEIO-360-B2F6 ([TCDS 1E10](https://openairdocs.org/tcds/1E10))
- Lycoming Engines AEIO-360-B4A ([TCDS 1E10](https://openairdocs.org/tcds/1E10))
- Lycoming Engines AEIO-360-H1A ([TCDS 1E10](https://openairdocs.org/tcds/1E10))
- Lycoming Engines AEIO-360-H1B ([TCDS 1E10](https://openairdocs.org/tcds/1E10))
- Lycoming Engines AEIO-540-D4A5 ([TCDS 1E4](https://openairdocs.org/tcds/1E4))
- Lycoming Engines AEIO-540-D4B5 ([TCDS 1E4](https://openairdocs.org/tcds/1E4))
- Lycoming Engines AEIO-540-D4C5 ([TCDS 1E4](https://openairdocs.org/tcds/1E4))
- Lycoming Engines AEIO-540-D4D5 ([TCDS 1E4](https://openairdocs.org/tcds/1E4))
- Lycoming Engines AEIO-540-L1B5 ([TCDS 1E4](https://openairdocs.org/tcds/1E4))
- Lycoming Engines AEIO-540-L1B5D ([TCDS 1E4](https://openairdocs.org/tcds/1E4))
- Lycoming Engines AEIO-540-L1D5 ([TCDS 1E4](https://openairdocs.org/tcds/1E4))
- Lycoming Engines AEIO-580-B1A ([TCDS E00004NY](https://openairdocs.org/tcds/E00004NY))
- Lycoming Engines AIO-320-A1A ([TCDS 1E12](https://openairdocs.org/tcds/1E12))
- Lycoming Engines AIO-320-A1B ([TCDS 1E12](https://openairdocs.org/tcds/1E12))
- Lycoming Engines AIO-320-A2A ([TCDS 1E12](https://openairdocs.org/tcds/1E12))
- Lycoming Engines AIO-320-A2B ([TCDS 1E12](https://openairdocs.org/tcds/1E12))
- Lycoming Engines AIO-320-B1B ([TCDS 1E12](https://openairdocs.org/tcds/1E12))
- Lycoming Engines AIO-320-C1B ([TCDS 1E12](https://openairdocs.org/tcds/1E12))
- Lycoming Engines AIO-360-A1A ([TCDS 1E10](https://openairdocs.org/tcds/1E10))
- Lycoming Engines AIO-360-A1B ([TCDS 1E10](https://openairdocs.org/tcds/1E10))
- Lycoming Engines AIO-360-A2A ([TCDS 1E10](https://openairdocs.org/tcds/1E10))
- Lycoming Engines AIO-360-A2B ([TCDS 1E10](https://openairdocs.org/tcds/1E10))
- Lycoming Engines AIO-360-B1B ([TCDS 1E10](https://openairdocs.org/tcds/1E10))
- Lycoming Engines HIO 540-A1A ([TCDS 1E4](https://openairdocs.org/tcds/1E4))
- Lycoming Engines HIO-360-A1A ([TCDS 1E10](https://openairdocs.org/tcds/1E10))
- Lycoming Engines HIO-360-A1B ([TCDS 1E10](https://openairdocs.org/tcds/1E10))
- Lycoming Engines HIO-360-B1A ([TCDS 1E10](https://openairdocs.org/tcds/1E10))

All 572: https://openairdocs.org/stc/SE01954SE/models.md

## What the certificate says

Read from the PDF's text layer, without the form's printed wording; the layout is lost and the order can differ. The PDF is the record.

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate This certificate issued to:

8231 W. Doe Avenue Visalia, CA 93291 * Title 14 Federal Aviation Regulations * See FAA Approved Model List (AML) No. SE01954SE for list of engine models Installation of engine crankcase seal, in accordance with Ly-Con Master Drawing List Number LC-100, Rev. 3, dated August 2, 2024, or later FAA-approved revision. Approval of this change in type design applies to the engine models identified in AML Number SE01954SE. Also, see AML Number SE01954SE for the list of applicable airworthiness regulations.

This approval should not be extended to other engines of this model on which other previously approved modifications are incorporated unless it is determined by the installer to be acceptable. If the holder agrees to permit another person to use this certificate to alter the product, the holder shall give the other person written evidence of that permission.

December 13, 2007 January 9, 2009 November 14, 2024 Number: SE01954SE FOR: Manager, West Certification Branch 2

SE01954SE November 14, 2024

### SE01954SE_AML.pdf

FEDERAL AVIATION ADMINISTRATION (FAA) APPROVED MODEL LIST (AML) SE01954SE FOR INSTALLATION OF LYCON REBUILDING CO. CRANKCASE SEAL ISSUE DATE: January 09, 2009 Page 1 of 2

**ITEM ENGINE MAKE**

**ENGINE MODEL ORIGINAL**

**TC NUMBER**

**CERTIFICATION BASIS**

**FOR ALTERATION**

**FAA APPROVED MASTER**

**DRAWING LIST (MDL)**

**INSTALLATION/**

**MAINTENANCE**

INSTRUCTIONS AML AMEND DATE Drawing Revision* Document Revision*

1. Lycoming O-320 Series E-274 CAR 13 LC-100 3 LC-200 3 11/14/24

2. Lycoming IO-320 Series 1E12 CAR 13 LC-100 3 LC-200 3 11/14/24

3. Lycoming LIO-320 Series 1E12 CAR 13 LC-100 3 LC-200 3 11/13/24

4. Lycoming AIO-320 Series 1E12 CAR 13 LC-100 3 LC-200 3 11/14/24

5. Lycoming AEIO-320 Series 1E12 CAR 13 LC-100 3 LC-200 3 11/14/24

6. Lycoming O-340 Series E-277 CAR 13 LC-100 3 LC-200 3 11/14/24

7. Lycoming O-360 Series E-286 CAR 13 LC-100 3 LC-200 3 11/14/24

8. Lycoming HO-360 Series E-286 CAR 13 LC-100 3 LC-200 3 11/14/24

9. Lycoming LO-360 Series E-286 CAR 13 LC-100 3 LC-200 3 11/14/24

10. Lycoming IO-360 Series 1E10 CAR 13 LC-100 3 LC-200 3 11/14/24

11. Lycoming LIO-360 Series 1E10 CAR 13 LC-100 3 LC-200 3 11/14/24

12. Lycoming AIO-360 Series 1E10 CAR 13 LC-100 3 LC-200 3 11/14/24

13. Lycoming AEIO-360 Series 1E10 CAR 13 LC-100 3 LC-200 3 11/14/24

14. Lycoming HIO-360 Series 1E10 CAR 13 LC-100 3 LC-200 3 11/14/24

15. Lycoming LHIO-360 Series 1E10 CAR 13 LC-100 3 LC-200 3 11/14/24

16. Lycoming VO-360 Series 1E1 CAR 13 LC-100 3 LC-200 3 11/14/24

17. Lycoming IVO-360 Series 1E1 CAR 13 LC-100 3 LC-200 3 11/14/24

18. Lycoming TO-360 Series E26EA FAR 33 LC-100 3 LC-200 3 11/14/24

19. Lycoming LTO-360 Series E26EA FAR 33 LC-100 3 LC-200 3 11/14/24

20. Lycoming TIO-360 Series E16EA FAR 33 LC-100 3 LC-200 3 11/14/24

21. Lycoming IO/AEIO/HIO-390 Series E00006NY FAR 33 LC-100 3 LC-200 3 11/14/24

22. Lycoming O-235 Series E-223 CAR 13 LC-100 3 LC-200 3 11/14/24

23. Lycoming O-290 Series E-229 CAR 13 LC-100 3 LC-200 3 11/14/24

24. Lycoming TVO-435 Series 1E13 FAR 33 LC-100 3 LC-200 3 11/14/24

25. Lycoming VO-435 Series E-279 CAR 13 LC-100 3 LC-200 3 11/14/24

26. Lycoming G/GO-435 Series E-228 CAR 13 LC-100 3 LC-200 3 11/14/24

27. Lycoming GO/IGO-480 Series E-275 FAR 33 LC-100 3 LC-200 3 11/14/24

28. Lycoming GSO/IGSO-480 Series E-284 CAR 13 LC-100 3 LC-200 3 11/14/24

29. Lycoming IGO-540 Series 1E11 CAR 13 LC-100 3 LC-200 3 11/14/24

30. Lycoming IGSO-540 Series 1E7 CAR 13 LC-100 3 LC-200 3 11/14/24

31. Lycoming IVO-540-A1A E11EA CAR 13 LC-100 3 LC-200 3 11/14/24

32. Lycoming TVO/TIVO-540 Series 1E14 CAR 13 LC-100 3 LC-200 3 11/14/24

33. Lycoming VO-540 Series E-304 CAR 13 LC-100 3 LC-200 3 11/14/24

34. Lycoming O-540 Series E-295 CAR 13 LC-100 3 LC-200 3 11/14/24

35. Lycoming IO/HIO/AEIO-540 Series 1E4 CAR 13 LC-100 3 LC-200 3 11/14/24

36. Lycoming TIO/LTIO-540 Series E14EA CAR 13 LC-100 3 LC-200 3 11/14/24

37. Lycoming IO/AEIO-580 Series E00004NY FAR 33 LC-100 3 LC-200 3 11/14/24

38. Lycoming IO-720 Series 1E15 CAR 13 LC-100 3 LC-200 3 11/14/24

39. Continental A-65 Series E-205 CAR 13 LC-100 3 LC-200 3 11/14/24

40. Continental A-75 Series E-213 CAR 13 LC-100 3 LC-200 3 11/14/24

41. Continental C-75/C-85 Series E-233 CAR 13 LC-100 3 LC-200 3 11/14/24

42. Continental C-90 Series E-252 CAR 13 LC-100 3 LC-200 3 11/14/24

FEDERAL AVIATION ADMINISTRATION (FAA) APPROVED MODEL LIST (AML) SE01954SE FOR INSTALLATION OF LYCON REBUILDING CO. CRANKCASE SEAL ISSUE DATE: January 09, 2009 Page 2 of 2

**ITEM ENGINE MAKE**

**ENGINE MODEL ORIGINAL**

**TC NUMBER**

**CERTIFICATION BASIS**

**FOR ALTERATION**

**FAA APPROVED MASTER**

**DRAWING LIST (MDL)**

**INSTALLATION/**

**MAINTENANCE**

INSTRUCTIONS AML AMEND DATE Drawing Revision* Document Revision*

43. Continental O-200 Series E-252 CAR 13 LC-100 3 LC-200 3 11/14/24

44. Continental IO/IOF-240 Series E7SO FAR 33 LC-100 3 LC-200 3 11/14/24

45. Continental O-300 Series E-253 CAR 13 LC-100 3 LC-200 3 11/14/24

46. Continental IO-360 Series E1CE CAR 13 LC-100 3 LC-200 3 11/14/24

47. Continental L/TSIO-360 Series E9CE FAR 33 LC-100 3 LC-200 3 11/14/24

48. Continental O-470 Series E-273 CAR 13 LC-100 3 LC-200 3 11/14/24

49. Continental L/IO-470 Series 3E1 CAR 13 LC-100 3 LC-200 3 11/14/24

50. Continental TSIO-470 Series 3E3 CAR 13 LC-100 3 LC-200 3 11/14/24

51. Continental L/IO-520 Series E5CE CAR 13 LC-100 3 LC-200 3 11/14/24

52. Continental L/TSIO-520 Series E8CE CAR 13 LC-100 3 LC-200 3 11/14/24

53. Continental GTSIO-520 Series E7CE CAR 13 LC-100 3 LC-200 3 11/14/24

54. Continental IO/IOF-550 Series E3SO FAR 33 LC-100 3 LC-200 3 11/14/24

55. Continental TSIO/TSIOF-550 Series E3SO FAR 33 LC-100 3 LC-200 3 11/14/24 * Or later FAA Approved Revision FAA Approved:

for Manager, West Certification Branch AMENDED: October 15, 2009 November 14, 2024

## Every issue (8)

- November 14, 2024: Amended, Current. [certificate](https://openairdocs.org/files/sha256/42/bd/42bd82962a6e7995466e5f9d51fa1c431ba5c6df6fd2fa776774e9725c2cc649), [SE01954SE_AML.pdf](https://openairdocs.org/files/sha256/b3/ff/b3ff40d52f8aa1e30586bc49829cbc2406994490244c973dba0d632c21eef753)
- November 14, 2024: Amended, Current. [certificate](https://openairdocs.org/files/sha256/42/bd/42bd82962a6e7995466e5f9d51fa1c431ba5c6df6fd2fa776774e9725c2cc649)
- November 14, 2024: Amended, Current. [certificate](https://openairdocs.org/files/sha256/42/bd/42bd82962a6e7995466e5f9d51fa1c431ba5c6df6fd2fa776774e9725c2cc649), [SE01954SE_AML.pdf](https://openairdocs.org/files/sha256/b3/ff/b3ff40d52f8aa1e30586bc49829cbc2406994490244c973dba0d632c21eef753)
- October 15, 2009: Amended, Historical. [certificate](https://openairdocs.org/files/sha256/bb/f6/bbf6512e5c7f413da430f39115edee7adb6cc957eec9439f5270f57e32453831), [SE01954SE AML.pdf](https://openairdocs.org/files/sha256/21/e5/21e5e9aefc21465f8b14fed795e682253d6ae80fa68783edad75c27c917eb612)
- October 15, 2009: Amended, Historical. [certificate](https://openairdocs.org/files/sha256/bb/f6/bbf6512e5c7f413da430f39115edee7adb6cc957eec9439f5270f57e32453831), [SE01954SE AML.pdf](https://openairdocs.org/files/sha256/21/e5/21e5e9aefc21465f8b14fed795e682253d6ae80fa68783edad75c27c917eb612)
- October 15, 2009: Amended, Historical. [certificate](https://openairdocs.org/files/sha256/bb/f6/bbf6512e5c7f413da430f39115edee7adb6cc957eec9439f5270f57e32453831), [SE01954SE AML.pdf](https://openairdocs.org/files/sha256/21/e5/21e5e9aefc21465f8b14fed795e682253d6ae80fa68783edad75c27c917eb612)
- January 9, 2009: Issued, Historical. [certificate](https://openairdocs.org/files/sha256/bb/f6/bbf6512e5c7f413da430f39115edee7adb6cc957eec9439f5270f57e32453831)
- January 8, 2009: Issued, Historical. [certificate](https://openairdocs.org/files/sha256/bb/f6/bbf6512e5c7f413da430f39115edee7adb6cc957eec9439f5270f57e32453831)

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