Form F-900-04E

AGÊNCIA NACIONAL DE AVIAÇÃO CIVIL – BRAZIL

BRAZILIAN AIRWORTHINESS DIRECTIVE

AD No.: 2010-01-01 Effective Date: 31 Jan. 2010

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. 2010-01-01 - EMBRAER - Amendment 39-1291.

APPLICABILITY:

This Airworthiness Directive is applicable to Embraer Models 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 equipped with Air Management System (AMS) controller cards part number (P/N) 

1001050-1-YYY or P/N 1001050-2-YYY containing software version Black Label 08 or lower installed.

CANCELLATION / REVISION:

Not applicable.

REASON:

It has been determined that due to an intermittent communication between AMS 

controller cards and both Secondary Power Distribution Assemblies (SPDAs) the message “RECIRC 

SMK DET FAIL” is displayed in the Engine Indication and Crew Alerting System (EICAS). This 

communication failure could result in loss of automatic activation of engine inlet ice protection system 

when in ice condition. In this situation the caution messages “A-I Eng 1 Fail” and “A-I Eng 2 Fail” will 

be displayed and if the flight crews do not follow the associated procedures ice may accrete in the engines 

inlet and cause a dual engine shut down.

Since this condition may occur in other aircraft 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:

To prohibit dispatch if the message “RECIRC SMK DET FAIL” is displayed and is 

confirmed to be associated to AMS controller processor board.

COMPLIANCE:

Required as indicated below, unless already accomplished.

After 10 days of the effective date of this AD, dispatch with message “RECIRC SMK 

DET FAIL” displayed on ground, as allowed in section 21 (Air Conditioning), item 24-04 (Recirculation 

System Smoke Detector), of the Embraer ERJ 170 Master Minimum Equipment List (MMEL), is 

prohibited unless after troubleshooting action confirms the message has been triggered due to a failure on 

the recirculation bay smoke detection system (Ref. FIM Task 26-16-00-810-801-A).

NOTE 1: The MMEL currently allow dispatch with the message “RECIRC SMK DET FAIL” displayed 

on ground under certain conditions. This AD supersedes the MMEL or the approved Minimum 

Equipment Lists (MEL) for any operator.

NOTE 2: The above limitation and procedures are considered an interim solution until a final action is 

identified, at which time the ANAC may consider further AD action.

Record compliance with this AD in the applicable maintenance log book.
CONTINUATION OF AD No.: 2010-01-01 - AMENDMENT 39-1291 PAGE No.: 2/2

Form F-900-04E

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

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).