FAA Part 107 Remote Pilot (UAG)RegulationsMedium
A remote pilot uses binoculars to continuously track her sUAS for an entire long cross-field survey flight, never switching to unaided vision. Does this comply with the visual line of sight requirement in 14 CFR 107.31?
- ANo, because devices such as binoculars are banned outright under Part 107
- BYes, as long as a visual observer also uses binoculars simultaneously
- CYes, binoculars satisfy VLOS as long as the aircraft stays within 400 feet AGL
- DNo, vision-enhancing devices may only be used momentarily to enhance situational awareness, not as the primary means of maintaining VLOS
Show answer & explanationAnswer & explanation
Correct answer: D. No, vision-enhancing devices may only be used momentarily to enhance situational awareness, not as the primary means of maintaining VLOS
14 CFR 107.31 requires the remote PIC (or VO) to see the sUAS with unaided vision (except for corrective lenses). Vision-enhancing devices like binoculars may only be used momentarily, such as to identify the aircraft or check for traffic, not as the continuous method of maintaining VLOS.
Why the other options are wrong
- A. Binoculars are not banned outright; momentary use is allowed.
- B. A VO using binoculars continuously would have the same problem.
- C. Altitude does not change the unaided-vision requirement.
Visual Line of Sight (107.31)
Requires the RPIC, VO, or person manipulating controls to be able to see the sUAS with unaided vision at all times, except momentary use of vision-aids or corrective lenses.
- Corrective lenses/glasses are always allowed
- Vision-enhancing devices (binoculars) allowed only momentarily
- Must be able to know the aircraft's location, attitude, and orientation
Memory trick: 'Binoculars are a peek, not a permanent perch.'