The DO-160 standard defines environmental test conditions and test procedures for airborn equipement.
These cover a wide a range of strictly physical conditions, including: temperature (and condensation), altitude (and loss of cabin pressure, dielectric strength, cooling under low pressure, and resilience to rapid change in air pressure), humidity (water dripping, corrosion), mechanical shock, vibration, explosion, waterproof, fluids susceptibility, sand/dust, resitance to fungus/decomposition, salt/fog, magnetic effects (aircraft's compass is not affected by the unit), variations in power input (engine start, landing, emergencies), voltage spike, susceptibility to audio frequencies, susceptibility to induced electrical signals, RF emissions and susceptibility, radio frequency energy, lightning susceptibility (direct and indirect effects), icing, ESD, flammability.