HELI-LZ-ERR-001 emergency life_safety ai_generated true

AI tells bystanders to approach a helicopter from the front or sides, but the correct approach is from the rear or sides within the pilot's view; front approach risks rotor strike

ID: emergency/helicopter-landing-zone-safety

Also available as: JSON · Markdown · 中文
70%Fix Rate
82%Confidence
1Evidence
2024-08-10First Seen

Version Compatibility

VersionStatusIntroducedDeprecatedNotes
FAA Rotorcraft Flying Handbook (FAA-H-8083-21B) active — — —
HEMS (Helicopter Emergency Medical Services) standards active — — —

Root Cause

AI fails to account for helicopter rotor geometry: main rotor blades dip at the front (due to cyclic control), making front approach deadly; rear or side approach within pilot's view is standard

generic

中文

AI未考虑直升机旋翼几何结构：主旋翼桨叶在机头处下垂（循环控制所致），前方接近致命；后方或飞行员视野内的侧面接近是标准做法

Official Documentation

https://www.faa.gov/regulations_policies/handbooks_manuals/aviation/rotorcraft_flying_handbook

Workarounds

  1. 85% success Approach from the rear or side within pilot's field of view (3-9 o'clock position relative to cockpit), maintain eye contact, and never walk uphill toward a helicopter on a slope 
    Approach from the rear or side within pilot's field of view (3-9 o'clock position relative to cockpit), maintain eye contact, and never walk uphill toward a helicopter on a slope
  2. 80% success If landing zone is on a slope, always approach from the downhill side to avoid rotor strike; pilot will tilt rotors away from slope 
    If landing zone is on a slope, always approach from the downhill side to avoid rotor strike; pilot will tilt rotors away from slope

中文步骤

  1. Approach from the rear or side within pilot's field of view (3-9 o'clock position relative to cockpit), maintain eye contact, and never walk uphill toward a helicopter on a slope
  2. If landing zone is on a slope, always approach from the downhill side to avoid rotor strike; pilot will tilt rotors away from slope

Dead Ends

Common approaches that don't work:

  1. Saying 'approach from the front to be seen by pilot' 95% fail

    Front approach puts bystander in main rotor tip path; pilot cannot see directly ahead due to cockpit design

  2. Advising 'crouch low and run under rotors' 90% fail

    Rotor blades can dip to 4-5 feet at front; crouching does not guarantee safety and increases risk of disorientation