The U.S. aircraft register, updated daily
Who holds what · as the FAA records the name

Northwest Propeller Services INC.

Holds 4 approved modifications, most of them for the Cessna 180 Skywagon. FAA spelling: Northwest Propeller Services Inc..

Approved modifications 4 · newest first

Cessna 180 Skywagon 1Cessna 182 Skylane 1
2007-01-12SA2229CE · Installation of McCauley 2A34C203/90DCA-2 or 2A34C203/90DCA-8 propeller. (THRU S/N 18052770) · 180, 180A, 180B
2007-01-12SA2253CE · Installation of McCauley C2A34C204/90DCB-8, 2A34C203/90DCA-8 or 2A34C201/90DA-8 propeller (through S/N 18265175). · 182, 182A, 182B
2003-08-06SP1521SO · Install Northwest Propeller Service Counterweight Thrust Bearings in place of the Hamilton Standard Counterweight... · 12D40, 2D30
1999-01-05SP1520SO · Install Memphis Prop. counterweight thrust bearings in place of the Hamilton Standard counterweight thrust bearings. · 12D40, 2D30

Source: FAA Dynamic Regulatory System (type certificate data sheets, supplemental type certificates, technical standard order authorisations). An organisation's name is as the FAA spelled it on each record; related spellings are separate pages.