FAA PMA replacements for
AT4220A6
3 approvals from 3 holders
Approved PMA parts
| PMA part number | Holder | Status | Supplement | Part name |
|---|---|---|---|---|
| AT4220A6 | ADS/Transcoil | Current | 2006-09-28 | Digital Clock |
| AT4220A6 | Astrotech Corp | Current | 1996-04-18 | Digital Clock |
| AT4220A6 | Allard Industries Inc, Aerospace Display Sys | Current | 1992-12-31 | Digital Clock |

