Derfred you sound like a simpleton
Additional Fixed Wing emergencies that
MAY require additional space at recovery airport (departure/destination/alternate or diversion airport):
- Flapless approaches – requires additional runway/clearway due high approach speed
- Hydraulics failures – may require additional landing area (lateral/longitudinal) – extra runway width/length likely to be required
- Electrical failures – may adversely affect flight controls
- Flight control malfunctions (stuck controls, control surface damage due impact with UAV, birds, another aircraft etc.)
- Engine failures (multiple engine failure/stall/surge)
- Engine fires / Aircraft Fires
- Bird strikes – resulting in severe engine damage (usually multiple)
- Landing gear malfunctions
Additional Helicopter specific emergencies that
MAY require additional space for recovery at an airport or helicopter LZ (or available open space):
- Tail rotor failures – may require landing at speed (run on landing)
- High rotor RPM / Low Rotor RPM
- Gear Box Failures (Main Rotor and/or Tail Rotor)
- Flight control malfunctions (cyclic, collective, tail-rotor and/or combination) – may require landing at speed (run on landing)
- Engine failures – if near / above field – may require immediate auto-rotation and landing in any open space immediately below flight path