FAA Part 107 Remote Pilot (UAG)OperationsHard
A remote pilot in command is using an external load configuration to lift a small sensor package with a sling beneath the sUAS. During flight, the pilot notices the aircraft beginning to oscillate and become difficult to control as the load swings. What is the most likely cause of this handling problem?
- AThe external load is improperly secured or its pendulum motion is shifting the center of gravity, destabilizing the aircraft
- BThe pilot has exceeded the maximum permissible altitude for the operation
- CThe aircraft's remote ID broadcast module has failed
- DThe battery voltage has dropped below the minimum threshold
Show answer & explanationAnswer & explanation
Correct answer: A. The external load is improperly secured or its pendulum motion is shifting the center of gravity, destabilizing the aircraft
An improperly secured or freely swinging external load creates a pendulum effect that shifts the aircraft's center of gravity dynamically, causing oscillation and control difficulty; this is a well-known hazard specific to external load and towing operations under Part 107.
Why the other options are wrong
- B. Exceeding altitude limits is a regulatory issue, not a direct cause of the described handling behavior.
- C. A Remote ID broadcast failure would not cause physical flight instability.
- D. Low battery voltage typically causes power loss or reduced performance, not oscillation from a swinging load.
External Load Operations
Operations in which a sUAS carries a load attached externally (e.g., via sling); the load must be secured to prevent shifting or excessive pendulum motion that could destabilize the aircraft's center of gravity.
- External loads must not adversely affect flight characteristics
- Improper securing causes pendulum oscillation
- CG shifts dynamically with a swinging load
- 107.19 addresses securing objects carried or dropped
Memory trick: A swinging load is a wrecking ball to your CG