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

SA8462SW

Recore of AiResearch bleed air precoolers pat numbers 194792-1, 194792-2, 194792-3, and 194792-4, with LORI core assembly part number L8742756-1. Held by Honeywell International INC., which holds 142 approved modifications in all. Last revised September 17, 2021. System: heating, ice protection and utility systems.

What it applies to

Kind of product
Aircraft
Design holder
The Boeing Company
Models
737-300 Series
Type certificate
A16WE
On this site
Boeing 737 2,890 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 19, 2026.