| 25S-7D5066-06 | Nacelle to Tip De-Icer, RH | Goodrich Corporation | Current | 2001-02-12 |
| 25S-7D5066-11 | Fuselage to Nacelle De-Icer | Goodrich Corporation | Current | 2001-02-12 |
| 25S-7D5095-09 | Fuselage to Nacelle De-Icer, LH | Goodrich Corporation | Current | 2001-02-12 |
| 25S-7D5095-10 | Fuselage to Nacelle De-Icer, RH | Goodrich Corporation | Current | 2001-02-12 |
| 25S-7D5095-11 | Nacelle to Tip De-Icer, LH | Goodrich Corporation | Current | 2001-02-12 |
| 25S-7D5095-13 | Horizontal Stab. De-Icer, LH | Goodrich Corporation | Current | 2001-02-12 |
| 25S-7D5095-14 | Horizontal Stab. De-Icer, RH | Goodrich Corporation | Current | 2001-02-12 |
| 25S-7D5095-15 | Vertical Fin De-Icer | Goodrich Corporation | Current | 2001-02-12 |
| 25S-7D5095-18 | Nacelle to Tip De-Icer, RH | Goodrich Corporation | Current | 2001-02-12 |
| 26103758 | Schematic for 12VDC Cabin Temperature Instl Diagram Control System | Hamilton Sundstrand Power System | Current | 1999-07-24 |
| 26875-48 | Valve Assembly, Charging | AVOX Systems Inc (formerly Scott Aviation) | Current | 1996-07-13 |
| 26875-48 | Valve Assembly, Charging | AVOX Systems Inc (formerly Scott Aviation) | Current | 1996-07-13 |
| 26875-48 | Valve Assembly, Charging | AVOX Systems Inc (formerly Scott Aviation) | Current | 1996-07-13 |
| 26875-63 | Valve Assembly, Charging | AVOX Systems Inc (formerly Scott Aviation) | Current | 1996-07-13 |
| 27 Series | STOL System Kit | Sierra Industries, Ltd. | Current | 2006-06-21 |
| 27-7D5164-09 | LH Wing Pneumatic De-icer | Goodrich Corporation | Current | 1995-02-15 |
| 27-7D5164-10 | RH Wing Pneumatic De-Icer | Goodrich Corporation | Current | 2001-10-16 |
| 27-7D5164-11 | LH Wing Pneumatic De-icer | Goodrich Corporation | Current | 2001-10-16 |
| 27-7D5164-12 | RH Wing Pneumatic De-Icer | Goodrich Corporation | Current | 2001-10-16 |
| 2700 | Ambulance Module | Snaky Creek Enterprises LLC dba Spectrum Aeromed | Historical | 1997-06-16 |
| 27441520-01 | Valve, Shutoff, 2" | Parker Hannifin Corp, Nichols Airborne Division | Current | 1996-02-26 |
| 27S-7D5164-05 | LH Horizontal Stab. Pneu. De-Icer | Goodrich Corporation | Current | 2001-10-16 |
| 27S-7D5164-06 | RH Horizontal Stab. Pneu. De-Icer | Goodrich Corporation | Current | 2001-10-16 |
| 27S-7D5164-07 | Vertical Fin Pneu. De-Icer | Goodrich Corporation | Current | 2001-10-16 |
| 27S-7D5164-16 | Horizontal Stab RH | Goodrich Corporation | Current | 2001-10-16 |
| 27S-7D5164-17 | Pneumatic de-icer | Goodrich Corporation | Current | 2001-10-16 |
| 28 Series | STOL System Kit | Sierra Industries, Ltd. | Current | 2006-06-21 |
| 28-1456820 | STOL-Kit | Horton STOL Craft | Current | 2002-05-15 |
| 28-180-200 | STOL-Kit | Horton STOL Craft | Current | 2002-05-15 |
| 28-TL-2 | Leaded and Unleaded Automotive Gasoline | Petersen Aviation Inc | Historical | 2005-05-18 |
| 28-TL-3 | Leaded and Unleaded Automotive Gasoline | Petersen Aviation Inc | Historical | 2005-05-18 |
| 2800-001 | Ambulance Module | Snaky Creek Enterprises LLC dba Spectrum Aeromed | Current | 2008-05-18 |
| 2800-001 | Ambulance Module | Snaky Creek Enterprises LLC dba Spectrum Aeromed | Current | 2007-06-04 |
| 2800-002 | Ambulance Module | Snaky Creek Enterprises LLC dba Spectrum Aeromed | Current | 2008-05-18 |
| 2800-002 | Ambulance Module | Snaky Creek Enterprises LLC dba Spectrum Aeromed | Current | 2007-06-04 |
| 2800-003 | Ambulance Module | Snaky Creek Enterprises LLC dba Spectrum Aeromed | Current | 2007-06-04 |
| 2800-004 | Ambulance Module | Snaky Creek Enterprises LLC dba Spectrum Aeromed | Current | 2007-06-04 |
| 2800-006 | Ambulance Module | Snaky Creek Enterprises LLC dba Spectrum Aeromed | Current | 2007-06-04 |
| 2800-012 | Ambulance Module | Snaky Creek Enterprises LLC dba Spectrum Aeromed | Current | 2007-06-04 |
| 2800-013 | Ambulance Module | Snaky Creek Enterprises LLC dba Spectrum Aeromed | Current | 2007-06-04 |
| 2800-014 | Ambulance Module | Snaky Creek Enterprises LLC dba Spectrum Aeromed | Current | 2007-06-04 |
| 2800-015 | Ambulance Module | Snaky Creek Enterprises LLC dba Spectrum Aeromed | Current | 2007-06-04 |
| 2800-016 | Ambulance Module | Snaky Creek Enterprises LLC dba Spectrum Aeromed | Current | 2007-06-04 |
| 2800-200 | Ambulance Module | Snaky Creek Enterprises LLC dba Spectrum Aeromed | Historical | 1999-01-26 |
| 28000 | Piper Wing Tip Stabilator Tip Extension & Dorsal Fin Kit | Isham Aircraft | Current | 1991-07-13 |
| 2810-002-1 (LH) | Fuel Cell Ramp Kits | FFC Manufacturing | Historical | 1996-04-24 |
| 2810-002-2 (RH) | Fuel Cell Ramp Kits | FFC Manufacturing | Historical | 1996-04-24 |
| 28100 | Dorsal Fin Kit | Isham Aircraft | Current | 1991-07-13 |
| 28200 | 3rd Window Kit | Isham Aircraft | Current | 1991-07-13 |
| 28300 | Piper Wing Tip and/or Dorsal Fin | Isham Aircraft | Current | 1991-07-13 |