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

ST00735SE

Installation of AlliedSignal P/N 965-0649-005 Digital Flight Data Acquisition Unit (DFDAU) and necessary sensors to record eighteen (18) parameters of data per BFGoodrich Master Drawing List D99-0004, Sheets 1 & 2, Revision B, dated September. Held by Lmi Aerospace, which holds 76 approved modifications in all. Last revised November 28, 2018. System: other and general.

What it applies to

Kind of product
Aircraft
Design holder
The Boeing Company
Models
737-200 Series
Type certificate
A16WE
On this site
Boeing 737 2,887 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 7, 2026.