Human factor problems in helicopters-research and development.
D000060:Accidents, Aviation; D000337:Aerospace Medicine; D000401:Aircraft; D004779:Environment Design; D006804:Ergonomics; D005390:Fires / Q000517:prevention & control; D006358:Hot Temperature / Q000009:adverse effects; D006801:Humans; D009622:Noise / Q000009:adverse effects; D012622:Seat Belts / Q000009:adverse effects; D014732:Vibration / Q000009:adverse effects