Airworthiness Directive · Amendment 39-16171 · Empresa Brasileira de Aeronautica S.A. (EMBRAER) Model ERJ 170 Airplanes
Empresa Brasileira de Aeronautica S.A. (EMBRAER) Model ERJ 170 Airplanes
This AD applies to Empresa Brasileira de Aeronautica S.A. (EMBRAER) Model ERJ 170-100 LR, -100 STD, -100 SE, -100 SU, -200 LR, -200 STD, and -200 SU airplanes; certificated in any category; as identified in Embraer Service Bulletins 170-24-0019, dated December 6, 2006; 170-24-0020, dated November 30, 2006; and 170-31-0020, Revision 01, dated May 21, 2008.
We are adopting a new airworthiness directive (AD) for the products listed above. This 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:
Unless already done, do the following actions as applicable.
(1) For airplanes identified in Embraer Service Bulletin 170-24-0019, dated December 6, 2006: Within 6,000 flight hours after the effective date of this AD, modify the electrical wiring in the overhead panel of the cockpit in accordance with Embraer Service Bulletin 170-24-0019, dated December 6, 2006.
(2) For airplanes identified in Embraer Service Bulletin 170-24-0020, dated November 30, 2006: Within 6,000 flight hours after the effective date of this AD, change the Air Data Smart Probe 3 channel B power supply bus from ESS2 to ESS3 in accordance with Embraer Service Bulletin 170-24-0020, dated November 30, 2006.
(3) For airplanes identified in Embraer Service Bulletin 170-31-0020, Revision 01, dated May 21, 2008: Within 6,000 flight hours after the effective date of this AD, duplicate the Aeronautical Radio Incorporated (ARINC) 429 airspeed signal for an extension longer than the rotor burst impact area; change the primary power source for the modular avionics unit (MAU) 2 from DC BUS 2 to DC ESS BUS 2 to include an additional ground and to provide dual electrical power to MAU 2; and change the wiring of the slat/flap actuators control electronics (SF-ACE) 1 and 2 to primary actuator control electronics (P-ACE) 1, 2, and 3; in accordance with Embraer Service Bulletin 170-31-0020, Revision 01, dated May 21, 2008.
(4) Actions accomplished before the effective date of this AD according to Embraer Service Bulletin 170-31-0020, dated July 20, 2007, are considered acceptable for compliance with the corresponding actions specified in this AD.
Note 1: This AD differs from the MCAI and/or service information as follows: No differences.
The aircraft, engines and makers this AD names, by the model designations in its text. A model listed here may still be outside the AD's serial ranges.
