| H4 Pitts21 Standard | 00840273910015 | World Class Technology Corporation | Class IIa | |
| H4 Pitts21 Standard | 00840273910022 | World Class Technology Corporation | Class IIa | |
| H4 Pitts21 Standard | 00840273910039 | World Class Technology Corporation | Class IIa | |
| H4 Pitts21 Standard | 00840273910046 | World Class Technology Corporation | Class IIa | |
| H4 Pitts21 Standard | 00840273910053 | World Class Technology Corporation | Class IIa | |
| H4 Pitts21 Standard | 00840273910060 | World Class Technology Corporation | Class IIa | |
| H4 Pitts21 Standard | 00840273910077 | World Class Technology Corporation | Class IIa | |
| H4 Pitts21 Standard | 00840273910251 | World Class Technology Corporation | Class IIa | |
| H4 Pitts21 Standard | 00840273910268 | World Class Technology Corporation | Class IIa | |
| H4 Pitts21 Standard | 00840273910275 | World Class Technology Corporation | Class IIa | |
| H4 Pitts21 Standard | 00840273910282 | World Class Technology Corporation | Class IIa | |
| H4 Pitts21 Standard | 00840273910299 | World Class Technology Corporation | Class IIa | |
| H4 Pitts21 Standard | 00840273910305 | World Class Technology Corporation | Class IIa | |
| H4 Pitts21 Standard | 00840273910312 | World Class Technology Corporation | Class IIa | |
| H4 Pitts21 Standard | 00840273910329 | World Class Technology Corporation | Class IIa | |
| H4 Pitts21 Standard | 00840273920250 | World Class Technology Corporation | Class IIa | |
| H4 Pitts21 Standard | 00840273920311 | World Class Technology Corporation | Class IIa | |
| H4 Pitts21 Standard | 00840273920335 | World Class Technology Corporation | Class IIa | |
| H4 Pitts21 Standard | 00840273920342 | World Class Technology Corporation | Class IIa | |
| H4 Universal | 00840273908333 | World Class Technology Corporation | Class IIa | |
| H4 Universal | 00840273908340 | World Class Technology Corporation | Class IIa | |
| H4 Universal | 00840273908364 | World Class Technology Corporation | Class IIa | |
| H4 Universal | 00840273908371 | World Class Technology Corporation | Class IIa | |
| H4 Universal | 00840273908395 | World Class Technology Corporation | Class IIa | |
| H4 Universal | 00840273908401 | World Class Technology Corporation | Class IIa | |
| H4 Universal | 00840273908753 | World Class Technology Corporation | Class IIa | |
| H4 Universal | 00840273908760 | World Class Technology Corporation | Class IIa | |
| H4 Universal | 00840273908777 | World Class Technology Corporation | Class IIa | |
| H4 Universal | 00840273908784 | World Class Technology Corporation | Class IIa | |
| H4 Universal | 00840273908791 | World Class Technology Corporation | Class IIa | |
| H4 Universal | 00840273908807 | World Class Technology Corporation | Class IIa | |
| H4 Universal | 00840273908814 | World Class Technology Corporation | Class IIa | |
| H4 Universal | 00840273908821 | World Class Technology Corporation | Class IIa | |
| H4 Universal | 00840273908838 | World Class Technology Corporation | Class IIa | |
| H4 Universal | 00840273908869 | World Class Technology Corporation | Class IIa | |
| H4 Universal | 00840273909224 | World Class Technology Corporation | Class IIa | |
| H4 Universal | 00840273909231 | World Class Technology Corporation | Class IIa | |
| H4 Universal | 00840273909255 | World Class Technology Corporation | Class IIa | |
| H4 Universal | 00840273909262 | World Class Technology Corporation | Class IIa | |
| H4 Universal | 00840273909279 | World Class Technology Corporation | Class IIa | |
| H4 Universal | 00840273909286 | World Class Technology Corporation | Class IIa | |
| H4 Universal | 00840273909293 | World Class Technology Corporation | Class IIa | |
| H4 Universal | 00840273909873 | World Class Technology Corporation | Class IIa | |
| H4 Universal | 00840273909880 | World Class Technology Corporation | Class IIa | |
| H4 Universal | 00840273909897 | World Class Technology Corporation | Class IIa | |
| H4 Universal | 00840273909903 | World Class Technology Corporation | Class IIa | |
| H4 Universal | 00840273910114 | World Class Technology Corporation | Class IIa | |
| H4 Universal | 00840273910121 | World Class Technology Corporation | Class IIa | |
| H4 Universal | 00840273910138 | World Class Technology Corporation | Class IIa | |
| H4 Universal | 00840273910145 | World Class Technology Corporation | Class IIa | |