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Significant Regulatory Guidance
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Getting to Know Your ADS-B System
Getting to Know Your ADS-B SystemFAA Unapproved Parts Notifications (UPN)
UPNs are ordered by year posted and not by SUP case year.
| FAA UPNs Posted in 1999 | ||
|---|---|---|
| Date Posted | Subject | ... |
Part 139 Airport Certification Status List
Effective date: February 19, 2026. SMS trigger data updated February 2026. Waiver data first added June 15, 2023.