September 25 is the effective date for an AD aimed at owners of the Sandel ST3400 terrain awareness and warning system/radio magnetic indicator (TAWS/RMI). The directive (AD 2006-16-18) was prompted by a report of in-flight bearing error caused by input signal fault and software error. Operators are required to install new software and placard the unit until the upgrade is installed.
AD Issued on Sandel TAWS/RMI
- September 11, 2006, 6:37 AM