AD 2002-06-06
Effective 05/03/2002 · Published 03/25/2002
Airworthiness Directives; Rockwell Collins, Inc. TDR-94 and TDR-94D Mode S Transponders
Summary
This amendment adopts a new airworthiness directive (AD) that applies to certain Rockwell Collins TDR-94 and TDR-94D Mode S transponders that derive altitude information from a Gillham (gray code) encoded pressure altitude source and are installed on airplanes. This AD requires you to have the unit modified to prevent erroneous altitude reporting. This AD is the result of reports that erroneous altitude resolutions…