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

SA5159NM (2 OF 2)

Installation of chip detector system. Held by Northwest Aircraft INC, which holds 2 approved modifications in all. Last revised November 5, 1992. System: other and general.

What it applies to

Kind of product
Aircraft
Design holder
B-N Group Ltd.; B-N Group Ltd.; B-N Group Ltd.; B-N Group Ltd.; B-N Group Ltd.; B-N Group Ltd.; B-N Group Ltd.; B-N Group Ltd.; B-N Group Ltd.; B-N Group Ltd.; B-N Group Ltd.; B-N Group Ltd.; B-N Group Ltd.; B-N Group Ltd.; B-N Group Ltd.; B-N Group Ltd.; B-N Group Ltd.
Models
BN-2, BN-2A, BN-2A-2, BN-2A-20, BN-2A-21, BN-2A-26, BN-2A-27, BN-2A-3, BN-2A-6, BN-2A-8, BN-2A-9, BN-2B-20, BN-2B-21, BN-2B-26, BN-2B-27, BN-2T, BN-2T-4R
Type certificates
A17EU, A17EU, A17EU, A17EU, A17EU, A17EU, A17EU, A17EU, A17EU, A17EU, A17EU, A17EU, A17EU, A17EU, A17EU, A17EU, A17EU
On this site
Britten-Norman BN-2 54 registered
Pilatus Britten-Norman Ltd. BN-2 13 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 5, 2026.