maintenance significant item

contingency maintenance / special maintenance

depot maintenance (beyond O and I level activities, performed in an industrial-type facility) / D-level maintenance

maintenance checks / routine maintenance, scheduled tasks

maintenance idling (periodic running of engine for maintenance purposes)

organizational maintenance (O-level) (day-to-day work that standard airfield maintenance groups perform in support of airfield operations)

routine maintenance / scheduled tasks, maintenance checks

scheduled tasks / routine maintenance, maintenance checks

special maintenance / contingency maintenance

area of military significant fallout

genetically significant dosage

mean time between significant failures

militarily significant fallout

militarily significant quantity

militarily significant state

military significant fallout

no significant change

safety significant operations

significant advance / breakthrough

significant aggravation

significant characteristics

significant concession

significant counterintelligence brief

significant damage

significant data selection

significant developments

significant divergences

significant efforts / endeavors

significant gains

significant impact / influence

significant meteorological information

significant military presence

significant structural inspection