| 180-F | Aileron and/or Flap Gap Seals | Horton STOL Craft | | 27 | Flight Controls | PMA |
| 180-FA | Aileron and/or Flap Gap Seals | Horton STOL Craft | | 27 | Flight Controls | PMA |
| 180-FAM | Aileron and/or Flap Gap Seals | Horton STOL Craft | | 27 | Flight Controls | PMA |
| 180-T | Aileron and/or Flap Gap Seals | Horton STOL Craft | | 27 | Flight Controls | PMA |
| 182-56-71 | STOL-Kit | Horton STOL Craft | | 57 | Structures | PMA |
| 182-56-71R | STOL-Kit | Horton STOL Craft | | 57 | Flight Controls | PMA |
| 182-72-86 | STOL-Kit | Horton STOL Craft | | 57 | Flight Controls | PMA |
| 182-7286-R | STOL-Kit | Horton STOL Craft | | 57 | Flight Controls | PMA |
| 182-97-02 | STOL-Kit | Horton STOL Craft | | 57 | Structures | PMA |
| 182-A | Aileron and/or Flap Gap Seals | Horton STOL Craft | | 27 | Flight Controls | PMA |
| 182-F | Aileron and/or Flap Gap Seals | Horton STOL Craft | | 27 | Flight Controls | PMA |
| 182-FA | Aileron and/or Flap Gap Seals | Horton STOL Craft | | 27 | Flight Controls | PMA |
| 182-FAM | Aileron and/or Flap Gap Seals | Horton STOL Craft | | 27 | Flight Controls | PMA |
| 182-T | Aileron and/or Flap Gap Seals | Horton STOL Craft | | 27 | Flight Controls | PMA |
| 18216264 | Stabilizer Tips, Elevator Tips | Horton STOL Craft | | 27 | Flight Controls | PMA |
| 18216264, 18216579, 17218086, 18226586-1, -2, Instl C177 | Stabilizer Tips, Elevator Tips | Horton STOL Craft | | 55 | Structures | PMA |
| 18216579 | Stabilizer Tips, Elevator Tips | Horton STOL Craft | | 55 | Structures | PMA |
| 18218086 | Stabilizer Tips, Elevator Tips | Horton STOL Craft | | 27 | Flight Controls | PMA |
| 18226586-1 | Stabilizer Tips, Elevator Tips | Horton STOL Craft | | 27 | Flight Controls | PMA |
| 18226586-2 | Stabilizer Tips, Elevator Tips | Horton STOL Craft | | 27 | Flight Controls | PMA |
| 185-61-72 | STOL-Kit | Horton STOL Craft | | 57 | Flight Controls | PMA |
| 185-73-85 | STOL-Kit | Horton STOL Craft | | 57 | Structures | PMA |
| 185-A | Aileron and/or Flap Gap Seals | Horton STOL Craft | | 27 | Flight Controls | PMA |
| 185-F | Aileron and/or Flap Gap Seals | Horton STOL Craft | | 27 | Flight Controls | PMA |
| 185-FA | Aileron and/or Flap Gap Seals | Horton STOL Craft | | 27 | Flight Controls | PMA |
| 185-FAM | Aileron and/or Flap Gap Seals | Horton STOL Craft | | 27 | Flight Controls | PMA |
| 185-T | Aileron and/or Flap Gap Seals | Horton STOL Craft | | 27 | Flight Controls | PMA |
| 188-66-71 | STOL-Kit | Horton STOL Craft | | 57 | Flight Controls | PMA |
| 188-70-71 | STOL-Kit | Horton STOL Craft | | 57 | Flight Controls | PMA |
| 188-72-83F | STOL-Kit | Horton STOL Craft | | 57 | Flight Controls | PMA |
| 188-72-83T | STOL-Kit | Horton STOL Craft | | 57 | Structures | PMA |
| 205-63-64 | STOL-Kit | Horton STOL Craft | | 57 | Flight Controls | PMA |
| 205-A | Aileron and/or Flap Gap Seals | Horton STOL Craft | | 27 | Flight Controls | PMA |
| 205-F | Aileron and/or Flap Gap Seals | Horton STOL Craft | | 27 | Flight Controls | PMA |
| 205-FA | Aileron and/or Flap Gap Seals | Horton STOL Craft | | 27 | Flight Controls | PMA |
| 205-FAM | Aileron and/or Flap Gap Seals | Horton STOL Craft | | 27 | Flight Controls | PMA |
| 205-T, 210-T | Aileron and/or Flap Gap Seals | Horton STOL Craft | | 27 | Flight Controls | PMA |
| 2051-25 (LH), 2051-26 (RH), 2051-2526, 2051-2728 | Wing Tips | Horton STOL Craft | | 57 | Structures | PMA |
| 2051-25 LH, 2051-26 RH, 2051-2526, 2051-2728 | Wing Tips | Horton STOL Craft | — | 57 | Structures | PMA |
| 2051-25, -26 | Wing Tips | Horton STOL Craft | | 57 | Structures | PMA |
| 2052 | Flap & Aileron Gap Seals Kit | Horton STOL Craft | | 27 | Structures | PMA |
| 2055 | Kit Inst'l | Horton STOL Craft | — | 27 | Flight Controls | PMA |
| 2056 | Kit Inst'l | Horton STOL Craft | | 27 | Flight Controls | PMA |
| 2056-25 LH, -26 RH, Instl C177 Sheet 1 | Wing Tip | Horton STOL Craft | — | 57 | Structures | PMA |
| 2056-25 LH, 2056-26 RH, 2056-2526 | Wing Tips | Horton STOL Craft | — | 57 | Structures | PMA |
| 2056-35 | Stabilator Tips | Horton STOL Craft | — | 55 | Structures | PMA |
| 2056-35, Instl C177 Sheet 3 | Stabiliator Tip | Horton STOL Craft | — | 55 | Structures | PMA |
| 206-64-71 | STOL-Kit | Horton STOL Craft | | 57 | Structures | PMA |
| 206-72-86 | STOL-Kit | Horton STOL Craft | | 57 | Structures | PMA |
| 206-97-02 | STOL-Kit | Horton STOL Craft | | 57 | Structures | PMA |