Summary
We propose to adopt a new airworthiness directive (AD) for the products listed above. This proposed AD results from mandatory continuing airworthiness information (MCAI) originated by an aviation authority of another country to identify and correct an unsafe condition on an aviation product. The MCAI describes the unsafe condition as:
It has been found that the fuel quantity probes harnesses installed in the left and right wing stub tanks on some Embraer ERJ- 170( ) aircraft models may not be protected in accordance with RBHA/ FAR (Regulamento Brasileiro de Homologa[ccedil][atilde]o Aeron[aacute]utica/Federal Aviation Regulation) 25.981(a) and (b) requirements.
The unsafe condition is potential ignition sources inside fuel tanks, which, in combination with flammable fuel vapors, could result in fuel tank explosions and consequent loss of the airplane. The proposed AD would require actions that are intended to address the unsafe condition described in the MCAI.