ST03440CH
Relocation of the Auxiliary Power Unit (APU) Electronic Control Unit (ECU) from the E6 rack in the Aft Equipment Center (AEC) to the E2 rack in the thermally-controlled Main Equipment Center (MEC). Held by Airborne Maintenance & Engineering Services (Ames), which holds 20 approved modifications in all. Last revised April 3, 2015. System: engine.
What it applies to
- Kind of product
- Aircraft
- Design holder
- The Boeing Company; The Boeing Company
- Models
- 767-200 Series, 767-300 Series
- Type certificates
- A1NM, A1NM
- On this site
- Boeing 767 584 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 20, 2026.