Airworthiness Directive DCA/RAD/35B Transponder Inspection
| Product Code: | DCA/RAD/35B |
|---|---|
| Availability: | In Stock |
Description
Airworthiness Directive DCA/RAD/35B Transponder Inspection
This AD is applicable to almost all transponder equipped aircraft. Also note that it is a repetitive AD, it needs to be carried out every 2 years. The easiest way to achieve this is to combine it with your 2 yearly Part 43 transponder, altimeter and radio inspection.
In simple terms, it checks for the following 2 failure conditions:
- Incorrect Mode C (Altitude) reports at certain specified altitudes (1000, 4100, 15700 and 31000 ft). This applies to all aircraft except those using serial data wiring between the encoder and transponder.
- incorrect operation of the mode C comparator. This only applies a aircraft with 2 transponder systems and a comparator.
Call us to discuss applicability to your aircraft.