The U.S. aircraft register, updated daily
Approved modifications · supplemental type certificate · current · reissued

SA302WE

Incorporate a de-icing system (as manufactured by applicant) externally on Rotol propeller spinner as an alternate to Dowty Rotol internal elements. If applied to original spinner, Montgomery Systems Tech., Inc. P/N 72196-2 will apply. If applied to a new aluminum nose spinner P/N 72196-1 will apply. Dowty Rotol Service Bulletin Section 61-170 pages 1 and 2 outlines a revised spinner de-icing system. This is a Napier external system. Approval of the A.R.B. is indicated. (Continued on page 3). Held by Robert W. Murray, which holds 12 approved modifications in all. Last revised December 20, 2011. System: propeller.

What it applies to

Kind of product
Aircraft
Design holder
Fokker Services; Fokker Services; Fokker Services; Fokker Services; Fokker Services; Fokker Services; Fokker Services; Fokker Services; Gulfstream Aerospace Corporation; Maryland Air Industries Inc.; Maryland Air Industries Inc.; Maryland Air Industries Inc.; Maryland Air Industries Inc.; Vickers-Armstrongs (Aircraft Limited); Vickers-Armstrongs (Aircraft Limited); BAE Systems (Operations) Limited; BAE Systems (Operations) Limited
Models
F27 Mark 050, F27 Mark 100, F27 Mark 200, F27 Mark 300, F27 Mark 400, F27 Mark 500, F27 Mark 600, F27 Mark 700, G-159, F-27, F-27A, F-27B, F-27F, Viscount 745D, Viscount 810, HS 748 Series 2A, HS 748 Series 2B
Type certificates
A-817, A-817, A-817, A-817, A-817, A-817, A-817, A-817, 1A17, 7A1, 7A1, 7A1, 7A1, A-814, A-814, A24EU, A24EU
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 7, 2026.