Definition
In the context of emergency approaches and landings, survivability is the likelihood that the occupants of an airplane will live through an off-airport or forced landing, determined primarily by the pilot's control of impact forces, choice of landing surface, use of restraints, and post-impact actions such as evacuation and fire avoidance.
Plain English
How likely the people on board are to walk away from a forced landing or crash, based on choices the pilot makes before, during, and after touchdown.
Context Anchor
Seen in discussions of emergency planning, forced landings, off-airport landings, and post-accident actions.
Derivation
From 'survive' (Latin supervivere, 'to live beyond') plus the suffix '-ability'. In aviation training, the word is used in a deliberate way: it shifts the pilot's mindset from 'will the airplane survive?' to 'will the occupants survive?' — two very different goals.
Why Pilots Care
Understanding survivability helps pilots evaluate aircraft modifications, restraint use, and emergency procedures that directly influence whether occupants walk away from an incident.
Intuition Check
Survivability does not mean the emergency will be safe or comfortable. It means the conditions and choices give the occupants a better chance of living through it.
Example Sentence 1
The pilot accepted that the airplane would be damaged and focused on survivability by aiming for an open field and touching down at the slowest possible controllable speed.
Example Sentence 2
Proper shoulder harness use improves survivability by keeping the pilot in position through the deceleration phase.