The U.S. aircraft register, updated daily
Parts · Instruments and avionics

Interrogator

2 failure reports named the interrogator in the last ten years, 8 since 1997, most often on the Boeing 757; the condition most often found was "failed".

Reports by year

0122311997113112019
Reports by year, as a table
reports
19971
20051
20091
20133
20181
20191

Which system the reports file it under last ten years

Reports by system, as a table
reports
Instruments and avionics2

Models most often reporting it last ten years

Models most reported, as a table
reports
Boeing 7571
Boeing 7671

How it failed the condition found, last ten years

failed1inoperative1
Conditions found, as a table
reports
failed1
inoperative1

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.