Duncan Aviation to Perform NDT Inspection for Enstrom Helicopter Service Direct Bulletin

LINCOLN, NEB. — Duncan Aviation is geared up and prepared to perform the magnetic particle inspection required on the main rotor spindle of the Enstrom F-28A, F-28C, F-28F, 280, 280C, 280F and 280FX model helicopter.

In February, Enstrom Helicopter Corporation issued Service Directive Bulletin No. 0199 to address potential spindle separation due to fatigue. This affects all the serial numbers of the main rotor spindle, P/N 28-14282-11 and P/N 28-14282-13.

For compliance, spindles with 5,000 hours or more time-in-service need to be inspected within the next five hours time-in-service and repeated every 300 hours thereafter. Spindles with fewer than 5,000 hours time-in-service need to have this inspection performed at or before reaching this threshold.

Once Duncan Aviation receives the spindle, accessory technicians are able to turn the unit the same day. With enough advanced notice, Enstrom operators can expect to receive their spindle back the next day.

For more information about this Service Directive Bulletin and Duncan Aviation NDT services, contact Customer Account Rep Kenny Leymaster at +1 402.479.1584.

About Duncan Aviation

Duncan Aviation is an aircraft service provider supporting the aviation needs of government and business operators and other service providers. Services include major and minor airframe inspections, engine maintenance, major retrofits for cabin and cockpit systems, full paint and interior services, and preowned aircraft sales and acquisitions. Duncan Aviation also has international aircraft components solutions experts available 24/7/365 at +1 402.475.4125 who can handle any aircraft system problem with immediate exchanges, rotables, loaners or avionics/instrument/accessory repairs and overhauls. Complete service facilities are located in Battle Creek, Michigan; Lincoln, Nebraska; and Provo, Utah. We also have dozens of other facilities strategically located throughout the United States to provide customers with regional support and the quickest response possible to avionics, engine and airframe Aircraft On Ground (AOG) situations.

For more information about any of Duncan Aviation’s services, call +1 402.475.2611 or visit