AD NUMBER: 2003-13-08

MANUFACTURER: Terrain Awareness Warning System (TAWS)
SUBJECT: Airworthiness Directive 2003-13-08

SUMMARY: This amendment adopts a new airworthiness directive (AD) that applies to all Goodrich Avionics Systems, Inc. (Goodrich) TAWS8000 terrain awareness warning systems (TAWS) that are installed on airplanes. This AD requires you to inspect the TAWS installation and remove any TAWS where both the TAWS and any other device are connected to the same baro set potentiometer. This AD also prohibits future installation of any TAWS8000 TAWS that incorporates hardware "Mod None," "Mod A," or "Mod B." This AD is the result of a test that showed that TAWS8000 TAWS cause altitude errors in other instruments. The actions specified by this AD are intended to prevent the loading of the baro set potentiometer, which could result in an unacceptable attitude error. Such a condition could cause the pilot to make flight decisions that put the airplane in unsafe flight conditions.

FMI: www.avantext.com/DailyADIndex.ASP?AD=20031308