Calendar month
A measurement of time used by the FAA for inspection and certification purposes. One calendar month from a given day extends from that day until midnight of the last day of that month.
Also defined in 2 more sources
The measurement of time used by the FAA for inspection and certification purposes. One calendar month from a given date extends from that date until midnight of the last day of that month.
Aviation Maintenance Technician Handbook — Powerplant, p. G-5
A time period used by the FAA for certification and currency purposes. A calendar month extends from a given day until midnight of the last day of that month.