According to 14 CFR Part 107, what is required to operate a small UAS in Class B airspace?
APrior ATC authorization from the facility managing that Class B airspace.✓
BA visual observer positioned directly below the flight path.
CFiling a NOTAM with the nearest FSS.
Why →Class B airspace requires prior ATC authorization under § 107.41, the same as Class C, D, and surface Class E. Class B surrounds the nation's busiest airports and extends in concentric layers. Due to high IFR traffic volume, ATC authorization for drone ops near Class B airports is often restricted to very low altitude ceilings or denied.
The trap →Visual observers and NOTAM filings have no bearing on airspace authorization. Authorization is permission granted beforehand, not notification.
Field note →Class B airspace typically extends surface to 10,000 feet MSL around major hub airports. LAANC ceilings near Class B airports are often 0 feet, even 1 foot of altitude may require a manual authorization taking weeks.
SOURCE → 14 CFR § 107.41CHECKED JUL 16ACS II.A.K1EASY