Form F-900-04E

AGÊNCIA NACIONAL DE AVIAÇÃO CIVIL – BRAZIL

BRAZILIAN AIRWORTHINESS DIRECTIVE

AD No.: 2009-04-01 Effective Date: 29 Apr. 2009

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 de Homologação Aeronáutica (RBHA) 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. 2009-04-01 - EMBRAER - Amendment 39-1264.

APPLICABILITY:

This Airworthiness Directive (AD) applies to Embraer 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. 

CANCELLATION / REVISION:

Not applicable.

REASON:

During ERJ 170 airplane full scale fatigue test, cracks were found in some structural 

components of the airplane. Analysis of these cracks resulted in modifications on the airplane 

Airworthiness Limitation Items (ALI), to include new inspections tasks or modification of existing ones 

and its respective thresholds and intervals. 

Failure to inspect these components according to the new tasks, thresholds and intervals, 

could prevent a timely detection of fatigue cracks. Undetected fatigue cracks in these areas could 

adversely affect the structural integrity of these airplanes.

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.

REQUIRED ACTION:

Updating of the airplane approved maintenance program according to the Maintenance 

Review Board Report (MRBR).

COMPLIANCE:

Required as indicated below, unless already accomplished.

(a) Within the next 90 days after the effective date of this AD, modify the airplane approved 

maintenance program to include the tasks according to the table below. These tasks are listed on 

Temporary Revisions (TR) 4-1, dated 15 Oct. 2007; TR 4-3, dated 15 Jan. 2008; and TR 4-4, dated 

18 Jan. 2008 of the Embraer 170 MRB Report (MRB-1621), or further MRBR revisions approved 

by ANAC, with the thresholds and intervals stated at these documents.

(b) The initial compliance time starts from the applicable threshold times and the repetitive inspections 

must be accomplished thereafter at the interval specified in the correspondent tasks of the MRBR,

observing for each task, the pre and pos-mod condition of the associated service bulletin, if 

applicable.

(c) In case the airplane has exceeded the new thresholds after accomplishment of paragraph (a), the 

expired tasks must be accomplished within the next 500 Flight Cycles (FC) after the effective date 

of this AD.
CONTINUATION OF AD No.: 2009-04-01 - AMENDMENT 39-1264 PAGE No.: 2/2

Form F-900-04E

Record compliance with this AD in the applicable maintenance log book.

CONTACT:

For additional technical information, 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

For acquisition, contact:

National Civil Aviation Agency (ANAC)

Publications Branch

Av. Presidente Vargas, 850 – 13o andar - Centro

Fax: (21) 3501-5467

20.071-001 - Rio de Janeiro - RJ

E-mail: publicacoes@anac.gov.br

APPROVAL:

ADEMIR ANTÔNIO DA SILVA

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).