ST00551LA-D
Modifies the aircraft to incorporate the Honeywell Enhanced Ground Proximity Warning System. The original STC installation is for the 767-300 series model in accordance with DAS-1-WE Approved United Air Lines Master Document List No. 00551 dated November 6, 1998, or later FAA approved revisions. This amendment adds the 767-222 model in accordance with DAS-100219-NM approved Master Document List No. 00551, Revision D, approved September 25, 2002, or later FAA approved revisions. United Air Lines Airplane Flight Manual (AFM) Supplement dated November 9, 1998, or later approved revision to FAA Approved AFM No. D6T11320.322 is required for the 767-322 STC modification. United Air Lines AFM Supplement dated September 25, 2002, or later approved revisions to FAA approved Flight Manual No. D6T11320.222 is required for the 767-222 STC modification. This amendment also clarifies the model of the 767-300 series to specifically the 767-322. Held by United Airlines INC, which holds 520 approved modifications in all. Last revised November 30, 2011. System: other and general.
What it applies to
- Kind of product
- Aircraft
- Design holder
- The Boeing Company; The Boeing Company
- Models
- 767-300 Series, 767-200 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.