The U.S. aircraft register, updated daily
Parts

Terrain Display

No failure report names the terrain display. 4 FAA approvals let 3 companies make a replacement terrain display, Aircraft Systems & Mfg INC holding the most (2).

Approved replacement parts 4 parts manufacturer approvals

A parts manufacturer approval (PMA) lets a company other than the aircraft's maker make a terrain display and sell it as an approved part for the models named. These are the companies holding such approvals for a terrain display:

For these models most: Boeing 727 (3), Bombardier CL-600 Challenger and CRJ (1).

MakerPartReplacesFitsGrantedStatus
Contact Aviation LLCTerrain Display On Wiring Harness 4252A-007Modification PartsCanadair CL-600-1A112015-08-13current
Gm NameplateTERRAIN DISPLAY MARKER BAC27DCC3229BAC27DCC3229Boeing 727 & 737 Series2006-01-27current
Aircraft Systems & Mfg INCTerrain Display Activation Kit K5644-0000-00Modification PartBoeing 727-100 Series, -200 Series2004-09-12current
Aircraft Systems & Mfg INCTerrain Display Activation Kit K5644-0000-00Modification PartBoeing 727-100 Series, -200 Series2004-09-12current

Sources: the FAA's service difficulty reports since 1995 (a report is a part that failed and was fixed, as filed by an airline, repair station or owner; the count shows reporting as much as reliability) and the parts manufacturer approvals in the FAA's Dynamic Regulatory System. The part name is the reporters' and the approval holders' own words, reduced to the first plain words so that spellings meet.