DCA/AL250/40A - Torquemeter - Replacement 13 <applicability> <applicability> <p> <span> Models 250-C20, -C20B, -C20F, -C20J, -C20R, -C20R/1, -C20R/2, -C20S and –C20W turboshaft engines and 250-B17, -B17C, -B17D, -B17E, -B17F, -B17F/1, and B17F/2 turboprop engines.</span> </p> </applicability> </applicabilit...
DCA/AL250/24 - Fuel Pump Drive - Inspection. 7 <applicability> <applicability> <p> <span> All model 250-C18 series and 250-C20 series with fuel pump P/N 6854292, 6856250, 6857548, 6876803 and 6877719</span> </p> </applicability> </applicability>
DCA/AL250/25 - Compressor Wheels - Retirement 7 <applicability> <applicability> <p> <span> All model 250-C18 with fourth stage compressor wheels P/N 6856754 or 6871444 in S/N range C01408 through C02321 as detailed in Allison 250-C18 CSL-96</span> </p> </applicability> </applicability>
DCA/AL250/9 - Compound Governor For PY Venting System - Modification. 3 <applicability> <applicability> <p> <span> 250-C18 and 250-C18A power turbine governors as detailed</span> </p> </applicability> </applicability>
DCA/AL250/53 <applicability> <applicability> <p> <span> Model 250-C30, -C30P and C30S engines and turbine assemblies fitted with 4th stage turbine nozzle assembly P/N 6898694,</span> </p> <p> <u> <span>Except model 250-C30 and 250-C30S engines<...
DCA/AL250/23 - Fuel Pump LP Filter Element - Inspection. 6 <applicability> <applicability> <p> <span> All model 250-C20 engine assemblies P/N 6851480 and 6853341. All model 250-C20B engine assemblies P/N 6886440</span> </p> </applicability> </applicability>
DCA/AL250/44 - Power lever Angle Potentiometer - Inspection. 14 <applicability> <applicability> <p> <span> Rolls-Royce Corporation (RRC, formerly Allison Engine Company, Allison Gas Turbine Division, and Detroit Diesel Allison),</span> </p> <p> <span>Models 250-C30R/3, -C30R/3M, -C47B, and -C47M turboshaft engines...
DCA/AL250/27 - N2 (Electronic) Overspeed Control System - Deactivation. 8 <applicability> <applicability> <p> <span> All model 250-C28B engines installed in, but not limited to, Bell Model 206L-1 rotorcraft</span> </p> </applicability> </applicability>
DCA/AL250/14 - Compressor PC Filter Insert - Inspection. 4 <applicability> <applicability> <p> <span> As detailed</span> </p> </applicability> </applicability>
DCA/AL250/28 - HP Fuel Control Filter - Modification. 8 <applicability> <applicability> <p> <span> All model 250-C20 and C20B with CECO fuel system</span> </p> </applicability> </applicability>
DCA/AL250/13 - Compressor Wheels Stages 1-6 - Glass Bead Peen - Modification. 4 <applicability> <applicability> <p> <span> All compressor assemblies prior to 250-C18 CAC 21525B and 250-C18A CAC 21773B</span> </p> </applicability> </applicability>
DCA/AL250/29A - Engine Fuel and Control System <applicability> <applicability> <p> <span> All model 250 series engines fitted with bendix fuel control and power turbine governor assemblies containing, or suspected of containing bushing assemblies P/N 2526146 with a nylon ball bearing separator.</span> </p> </applicabil...
DCA/AL250/12 - Accessories Gear Box - Modification. 4 <applicability> <applicability> <p> <span> As detailed</span> </p> </applicability> </applicability>
DCA/AL250/55 - Outer Combustion Case Assembly <applicability> <applicability> <p> <span>Model 250-C28 and -C30 series engines with an outer combustion case assembly P/N 6899237 or 23009569.</span> </p> </applicability> </applicability>
DCA/AL250/34 - Second Stage turbine Nozzle - Modification. 10 <applicability> <applicability> <p> <span> Model 250-C28B, except those with turbine S/N CAT 70498, CAT 70499, CAT 70502, CAT 70513 and subsequent</span> </p> <p> <span> Model 250-C28C except those with turbine S/N CAT 28010 and subsequent</span>...
DCA/AL250/18 - Fuel Control Rigging - Inspection. 5 <applicability> <applicability> <p> <span> 250-C20 engines with Chandler Evans fuel controls</span> </p> </applicability> </applicability>
