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

ST02552SE

Installation of Securaplane Sealed Lead Acid Batteries. Held by Securaplane Technologies Incorporated, which holds 3 approved modifications in all. Last revised September 1, 2017. System: electrical power.

What it applies to

Kind of product
Aircraft
Design holder
Bombardier Inc.
Models
DHC-8-400
Type certificate
A13NM
On this site
Bombardier DHC-8 Dash 8 and Q400 58 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 21, 2026.