SkyDrill

Share of accidents related to human factors

Remote Pilot (Part 107) practice question 8 of 31 on Airspace / Operational Requirements. ACS element UA.II.B.K4a · difficulty: recall. Want to answer it in a timed quiz? Use the Remote Pilot (Part 107) practice mode.

Question bank updated 2026-09-22

QUESTIONAccording to the Remote Pilot Study Guide, approximately what percentage of all aviation accidents are related to human factors?

  1. ALess than 50 percent
  2. BAbout 25 percent
  3. C80 percent
Show the answer and explanation

Correct answer: C. 80 percent

  • A — incorrect The study guide's estimate is far higher, at approximately 80 percent.
  • B — incorrect Figures near 25 percent in the study guide refer to the share of accidents occurring during landing and takeoff, not to human factors overall.
  • C — correct The study guide estimates that approximately 80 percent of all aviation accidents are related to human factors.

BACKGROUND

The aeronautical decision-making (ADM) chapter of the Remote Pilot Study Guide opens by noting that despite advances in training, equipment, and services, accidents still occur, and the human factor that leads to errors remains constant. It estimates that approximately 80 percent of all aviation accidents are related to human factors. It adds that the vast majority of these accidents occur during landing (24.1 percent) and takeoff (23.4 percent). This is why the FAA emphasizes ADM and risk management for remote pilots as well as manned pilots.

STUDY TIP

Link the 80 percent figure to human factors and the roughly 24 percent figures to the landing and takeoff phases so they are not confused.

KEY POINTS

  • About 80 percent of aviation accidents are related to human factors.
  • Landing (24.1 percent) and takeoff (23.4 percent) account for most of them.
  • ADM and risk management exist to reduce human-factor errors.

SOURCES

  • Remote Pilot Study Guide (remote_pilot_study_guide.txt) ch10 "Aeronautical Decision-Making and Judgment" Introduction
Practice the Remote Pilot (Part 107) test →Timed 60-question exam, by ACS area, or review your misses. Free.
MORE ON AIRSPACE / OPERATIONAL REQUIREMENTS

SkyDrill is not affiliated with the FAA. This is an original practice item based on 14 CFR part 107, 14 CFR part 89, and the FAA Remote Pilot – Small UAS Study Guide (FAA-G-8082-22). Regulations and handbooks are revised; confirm details against the current edition.