Airworthiness Directives; NARCO Avionics Inc. AT150 Transponders
airworthiness · Rule · Final rule. · Published 2004-04-26 · Effective 2004-06-01 · 69 FR 22386
Document
Document number
04-9104
Federal Register citation
69 FR 22386
Type
Rule
Action
Final rule.
Category
airworthiness
Publication date
2004-04-26
Effective date
2004-06-01
FAA docket
Docket No. 2002-NE-32-AD
Abstract
The FAA is adopting a new airworthiness directive (AD) for certain serial numbers (SNs) of NARCO Avionics Inc. AT150 transponders. This AD requires modification to the transponder by adding a resistor and transistor to the circuit board. This AD results from reports of AT150 transponders not recognizing and responding properly to Mode S interrogations from Mode S ground stations and Traffic Alert and Collision Avoidance System (TCAS-II) airborne equipment. We are issuing this AD to prevent loss of aircraft airspace separation and the possibility of mid-air collision.