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

ST00386BO

Installation of Hamilton Sundstrand Supplemental Cooling Unit (SCU) P/N 7011015H02EX (service\nlife escalation). Held by United Technologies, which holds 4 approved modifications in all. Last revised November 30, 2017. System: other and general.

What it applies to

Kind of product
Aircraft
Design holder
The Boeing Company; The Boeing Company
Models
787-8, 787-9
Type certificates
T00021SE, T00021SE
On this site
Boeing 787 Dreamliner 214 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.