The annual average percentages for on-time or early-completion maintenance ranged from 45–63%. In total, the maintenance for selected navy fixed-wing aircraft has taken more than 62,000 additional days than expected since FY 2014.
In comparison the US Air Force (USAF) has completed fixed-wing aircraft depot maintenance on time or earlier an average of 82% of the time over the last five fiscal years. The annual average percentages for on-time or early-completion maintenance ranged from 78–90%. In total, USAF fixed-wing aircraft have spent 22,572 fewer days in maintenance than expected since FY 2014.
The USN aviation depots performed best on the Northrop Grumman EA-6B Prowler electronic warfare aircraft and the Boeing NEA-18G Growler, which is a modified version of the Growler used for special testing. The navy completed depot maintenance an average of about one day earlier than projected on each platform.
Source: ( Host, s.f.)