ST04221AT
The installation of a Honeywell Enhanced Ground Proximity Warning System (EGPWS). Held by United Parcel Service Company, which holds 16 approved modifications in all. Last revised January 29, 2018. System: other and general.
What it applies to
- Kind of product
- Aircraft
- Design holder
- Airbus SAS; Airbus SAS; Airbus SAS; Airbus SAS; Airbus SAS; Airbus SAS; Airbus SAS; Airbus SAS; Airbus SAS; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company
- Models
- A300 B4-601, A300 B4-603, A300 B4-605R, A300 B4-620, A300 B4-622, A300 B4-622R, A300 C4-605R Variant F, A300 F4-605R, A300 F4-622R, 747-400F Series, 757-200PF Series, 767-300 Series, MD-11
- Type certificates
- A35EU, A35EU, A35EU, A35EU, A35EU, A35EU, A35EU, A35EU, A35EU, A20WE, A2NM, A1NM, A22WE
- On this site
- Airbus A300 120 registered
Boeing 747 192 registered
Boeing 757 440 registered
Boeing 767 584 registered
Mcdonnell Douglas MD-11 104 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.