(див. static ceiling)
static ceiling (the highest altitude at which the helicopter is capable of hovering in standard atmosphere) / hover ceiling
operational ceiling (service ceiling)
hover
hover capability
hover test
zero ground speed hover
absolute ceiling (AC)
ceiling (aeronautics)
service ceiling
ceiling lining
ceiling
ceiling altitude
ceiling height
zero ceiling
static ceiling
low ceiling
minimum ceiling
operating ceiling
unlimited ceiling
smoke ceiling
ceiling in rank