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 da Aviação Civil (RBAC) 39, applies to all 

aircraft registered in the Registro Aeronáutico Brasileiro. No person may 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. model ERJ 170-100 LR, ERJ 170-

100 SE, ERJ 170-100 STD, ERJ 170-100 SU, ERJ 170-200 LR, ERJ 170-200 STD and ERJ 170-200 SU 

airplanes; as identified in the Embraer Service Bulletin No. 170-53-0093, Revision 1, dated March 16, 

2012 or further revisions approved by the ANAC.

APPLICABILITY:

Not applicable.

CANCELLATION / REVISION:

It has been found the occurrences of chafing between the Auxiliary Power Unit (APU) 

Electronic Starter Controller (ESC) power cables (harness W205) 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 penetration

through the firewall.

REASON:

Since this condition may occur in other airplanes 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, inspection 

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 effective date of this AD, perform a Detailed Inspection (DI) 

on the APU ESC power cables (harness W205) for damage to the insulation and inner conductors, in 

accordance with the Accomplishment Instructions of Embraer Service Bulletin No. 170-53-0093, 

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

(b) Prior to further flight after accomplishment of the requirements in paragraph (a) of this AD, do the 

actions specified in paragraphs (b)(1), (b)(2) and (b)(3), as applicable, in accordance with the 

Accomplishment Instructions of Embraer Service Bulletin 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 part 

number (P/N) 191-21716-003 in the tail cone firewall.
CONTINUATION OF AD No.: 2012-03-04 / 39-1354 PAGE No.: 2/2

Form F-900-04E

(2) If the damage affects only the harness insulation, repair the insulation and install the new grommet 

support having P/N 191-21716-003 in the tail cone firewall.

(3) If the damage affects the harness insulation and the inner conductors, replace the harness and install

the new grommet support having P/N 191-21716-003 in the tail cone firewall.

(c) You must use Embraer Service Bulletin 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 this 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 de Produtos Aeronáuticos – GGCP).

NOTE: For the purpose of this AD, a Detailed Inspection (DI) 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 information, contact:

CONTACT:

National Civil Aviation Agency (ANAC)

Aeronautical Products Certification Branch (GGCP)

Av. Cassiano Ricardo, 521, Bloco B, 2o andar, Parque Residencial Aquarius

Fax: 55 (12) 3797-2330

12246-870 – São José dos Campos - SP, BRAZIL.

E-mail: pac@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 the National Civil Aviation Agency (ANAC).