Form F
- 900
- 04E 

### AGÊNCIA NACIONAL DE AVIAÇÃO CIVIL

– BRAZIL



## BRAZILIAN AIRWORTHINESS DIRECTIVE
AD No.: 2012 - 03 - 04 Effective Date: 13 Apr. 2012 The following Brazilian Airworthiness Directive (AD), issued by the Agência Nacional de Aviação Civil (ANAC) in accordance with provisions of Chapter IV, Title III of Código Brasileiro de Aeronáutica

- Law No. 7,565 dated 19 December 1986

- and Regulamento Brasileiro d a Aviação Civil (RB AC ) 39, applies to all aircraft registered in the Registro Aeronáutico Brasileiro. No person m ay operate an aircraft to which this AD applies, unless it has previously complied with the requirements established herein. AD No. 2012 - 03 - 04 - EMBRAER / 39 - 1354 .
This Airworthiness Directive applies to Embraer S.A. m odel ERJ 170

- 100 LR, ER J 170

- 100 SE, ERJ 170

- 100 STD, ERJ 170

- 100 SU, ERJ 170

- 200 LR, ERJ 170

- 200 S TD and ERJ 170

- 200 SU airplanes ; as identified in the Embraer Service B ulletin No. 170

- 53

- 0093, Revision 1, dated March 16 , 2012 or further revisions approved by the ANAC

. APPLICABILITY:

Not applicable. CANCELLA TION / REVISION:

It has been found the occurrences of chafing between the Auxiliary Power Unit (APU) Electronic Starter Controller (ESC) power cables (harness W 205) and the airplane tail cone firewall due to the grommet installed at the tail cone firewall moves out of its place. This condition, if not corrected, may result in reduced structural integrity of the fuselage and empennage in an event of fire penetrat ion through the firewall. REASON:

Since this condition may occur in other air plan es of the same type and affects flight safety, a corrective action is required. Thus, sufficient reason exists to request compliance with this AD in the indicated time limit. Installation of a new grommet support in the airplane tail cone firewall and, i nspection and replacement, if applicable, of harness W205

. REQUIRED ACTION:

Required as indicated below, unless already accomplished. COMPLIANCE:
(a) Within 3000 flight hours (FH) after the effec tive date of this AD, perform a Detailed Inspection ( D I ) on the APU ESC power c ables ( harness W205) for damage to the insulation and inner conductors , in accordance with the Accomplishment Instructions of Embraer S ervice B ulletin No. 170

- 53

- 0093 , Revision 1, dated March 16 , 2012 or further revisions approved by the AN AC

. (b) Prior to further flight after accomplishment of the requirements in paragraph ( a ) of this AD , do the actions sp ecified in paragraphs (b)(1), (b)(2) and (b)(3) , as applicable, in accordance with the Accomplishment Instructions of Embraer S ervice B ul letin No. 170

- 53

- 0093 Revision 1, dated March 16 , 2012 or further revisions approved by the ANAC

. ( 1 ) If there is no damage to the APU ESC power cable , install the new grommet support having pa rt number (P/N) 191

- 21716

- 003 in the tail cone firewall.CONTINUATION OF AD N o .: 2012 - 03 - 04 / 39 - 1354 PAGE N o .: 2 / 2

Form F
- 900
- 04E ( 2 ) If the damage affects only the harness insulation, repair the insulation and install the new grommet su pport having P/N 191

- 21716

- 003 i n the tail cone firewall. (3) If the damage affects the harness insulation and the inner conductors, replace the harness an d install the new grommet su pport having P/N 191

- 21716

- 003 i n the tail cone firewall. (c) You must use Embraer S ervice B ulletin No. 170

- 53

- 0093 Revision 1 , dated March 16 , 2012 or further revisions approved by the ANAC to do the actions required by this AD , unless th is AD specifies otherwise. (d) A different method or a different compliance time, with the requirements of this AD, may be used if approved by the General Manager of the Aeronautical Product Certification Branch (Gerência

- Geral de Certificação d e Produtos Aeronáuticos

– GGCP).
NOTE: For the purpose of this AD, a D etailed I nspection (D I ) is: "An intensive examination of a specific item, installation or assembly to detect damage, failure or irregularity. Available lighting is normally supplemented with a direct source of good lighting at an intensity deemed appropriate. Inspection aids such as mirrors, magnifying lenses, etc, may be necessary. Surface cleaning and elaborate access procedures may be required."

For additional technical infor mation, contact: CONTACT: National Civil Aviation Agency (ANAC) Aeronautical Products Certification Branch (GGCP) Av. Cassiano Ricardo, 521, Bloco B, 2 o andar, Parque Residencial Aquarius Fax: 55 (12) 3797

- 2330 12246

- 870

– São José dos Campos

- SP , BRAZIL

. E

- mail: p ac @anac.gov.br APPROVAL: HÉLIO TARQUÍNIO JÚNIOR General Manager GGCP
DINO ISHIKURA Airworthiness Superintendent ANAC
NOTE: Original in Portuguese language signed and available in the files of the Aeronautical Products Certification Branch (GGCP) of t he National Civil Aviation Agency (ANAC).