Question E1B06:
[97.15] Which of the following additional rules apply if you are erecting an amateur station antenna structure at a site at or near a public use airport?  

Choices:  
A: You may have to notify the Federal Aviation Administration and register it with the FCC as required by Part 17 of the FCC rules  
B: You may have to enter the height above ground in meters, and the latitude and longitude in degrees, minutes, and seconds on the FAA website  
C: You must file an Environmental Impact Statement with the EPA before construction begins  
D: You must obtain a construction permit from the airport zoning authority per Part 119 of the FAA regulations    

Correct Answer is  A: You may have to notify the Federal Aviation Administration and register it with the FCC as required by Part 17 of the FCC rules  

Correct answer: A — You may have to notify the Federal Aviation Administration and register it with the FCC as required by Part 17 of the FCC rules.

1) Why A is correct
- Part 97.15(b) points you to FCC Part 17 (Antenna Structure Registration, ASR). If your antenna structure requires FAA notice (typically due to height or proximity to an airport), you must:
  - Notify the FAA (usually via FAA Form 7460-1), and
  - Register the structure with the FCC in the ASR system if the FAA says notice is required.
- The FAA determines any marking/lighting; FCC Part 17 enforces registration and compliance.

2) Why the other choices are incorrect
- B: While the FAA notice process does involve submitting coordinates and height, this answer is an overly specific procedural detail and not the “rule” amateurs must follow. Also, FAA forms typically use feet (not meters) and accept decimal degrees; the exam’s key point is Part 17/FAA notice, not data-entry formats.
- C: There is no requirement to file an Environmental Impact Statement with the EPA for amateur antennas. Environmental review, when applicable, is under FCC rules (47 CFR Part 1, Subpart I), and EIS requirements are rare for amateur stations.
- D: FAA Part 119 covers air carrier and commercial operator certification, not antenna structures or zoning. The FAA does not issue “construction permits” for ham towers under Part 119; local zoning might apply, but that’s not an FAA requirement here.

3) Useful rules of thumb
- FAA notice triggers (14 CFR Part 77):
  - Height anywhere: notify FAA if height $> 200\ \text{ft} \ (\approx 61\ \text{m})$ above ground.
  - Near public-use airports, notify if the structure would penetrate the imaginary surfaces:
    - Runway $> 3200\ \text{ft}$: within $20{,}000\ \text{ft}$, a $100{:}1$ slope applies.
    - Shorter runway: within $10{,}000\ \text{ft}$, a $50{:}1$ slope applies.
    - Heliport: within $5{,}000\ \text{ft}$, a $25{:}1$ slope applies.
- Simple height check on a $100{:}1$ surface:
  - If you are $d$ feet from the runway end, the max height above the runway elevation is roughly $h_{\max} \approx d/100$.
- Conversion: $1\ \text{ft} = 0.3048\ \text{m}$.

Key takeaway: If your antenna is tall or near a public-use airport, you may need to notify the FAA; if FAA notice is required, you must register the structure with the FCC under Part 17.