SA00468WI

Installation of NorthPoint XP470 (T.C.M.) engine approved per STC SE4988NM, with McCauley D3A34C401/90DFA -2, -4, -6, -8 & -10 propellers on Cessna Aircraft Models 180, 180A through 180K, Serial Nos 30000 through 50911, and 18050912 through 18053203, and associated changes in accordance with NorthPoint Aviation, Installation Instructions. C-180 S/N 30000-52700. Rev. A dated June 15, 2020 or later "FAA Approved Revisions". Airplane Flight Manual Supplement Rev. A dated June 15, 2020, or later "FAA Approved Revisions" is required for airplanes with Serial Number 52770, and 18053001 through 18053203 (53001-53203). Held by Northpoint Aviation, which holds 4 approved modifications in all. Last revised August 24, 2020. System: propeller.

What it applies to

Kind of product: Aircraft
Design holder: The Cessna Aircraft Company; The Cessna Aircraft Company; The Cessna Aircraft Company; The Cessna Aircraft Company; The Cessna Aircraft Company; The Cessna Aircraft Company; The Cessna Aircraft Company; The Cessna Aircraft Company; The Cessna Aircraft Company; The Cessna Aircraft Company; The Cessna Aircraft Company
Models: 180K, 180F, 180E, 180D, 180C, 180G, 180B, 180J, 180A, 180, 180H
Type certificates: 5A6, 5A6, 5A6, 5A6, 5A6, 5A6, 5A6, 5A6, 5A6, 5A6, 5A6
On this site: Cessna 180 Skywagon 2,605 registered
The FAA's record: On the FAA's site

What an approved modification is

A supplemental type certificate is the FAA's approval of a change to a certified design: a new engine or propeller, avionics, an autopilot, floats, a parachute, a larger fuel tank, an ice-protection kit. The company holding it may sell the kit and the paperwork to owners of the listed models; the modification then becomes part of that aircraft's record. The FAA's list says what was approved and for which models, not how many aircraft carry it.

Source: FAA supplemental type certificates (Dynamic Regulatory System). Register counts from the FAA register of October 20, 2026.