Form F-900-04E 

### AGÊNCIA NACIONAL DE AV IAÇÃO CIVIL – BRAZIL



## BRAZILIAN AIRWORTHINESS DIRECTIVE

AD No.: 2006-11-01R4 Effective Date: 09 Apr. 2009

The following Brazilian Airworthiness Directive (AD ), issued by the Agência Nacional de Aviação Civil (ANAC) in acc ordance with provisions of Chapter IV, Title III of Código Brasileiro de Aeronáutica - Law No. 7,565 dated 19 December 1986 - and R egulamento Brasileiro de Homologação Aeronáutica (RBHA) 39, applies to all aircraft r egistered in the Re gistro Aeroná utico Brasileiro. No pe rson may operate an aircr aft to which this AD applies, unless it has previously complied with the requirements established herein.

AD No. 2006-11-01R4 - EMBRAER - Amendment 39-1266.

APPLICABILITY: This Airworthiness Directive applies to Embraer model ERJ 190-100 STD, ERJ 190-100 LR, ERJ 190-100 IGW, ERJ 190- 100 ECJ, ERJ 190-200 STD, ERJ 190-200 LR and ERJ 190-200 IGW airplanes equipped with Hamilton Sundstrand Low Pr essure Check Valve (LPCV) part numbers (P/N) 1001447-3 and/or 1001447-4.

CANCELLATION / REVISION: This AD cancels and supersedes the AD No. 2006-11-01R3 – Amdt 39-1252, dated 25 Nov. 2008, and is being issued to change its reason, required action and its compliance as well.

REASON: An occurrence of an uncommanded engine in-flight shutdown (IFSD) was reported on 20 Sep. 2005, which was caused by an ERJ 170 defective LPCV P/N 1001447-3 logging 3900 Flight Hours (FH). The valve failed to close due to excessive wear . Despite there were no IFSD related to LPCV P/N 1001447-4 failure, some ERJ 190 valves P/N 1001447-4 logging around 2472 FH were inspected and presented cracks due to low cycle fatigue. Since this fa ilure mode also might lead to an engine in-flight shutdown and since both engines of the airplane have th e same valves, there is a possibility of an occurrence of a dual engine IFSD due to LPCV failure. 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 complia nce with this AD in the indicated time limit. REQUIRED ACTION: Discard and replacement of LPCV P/ N 1001447-3; and periodic repl acement of LPCV P/N 1001447-4.

COMPLIANCE: Required as indicated below, unless already accomplished. (a) Before next flight after the effective date of this AD, replace all and any LPCV P/N1001447-3 having more than 1500 FH with a new or serviceable LPC V P/N 1001447-4 having less than 2000 FH since new or since overhaul. (b) Before any LPCV P/N 1001447-3 accumulates more than 1500 FH replace it with a new or serviceable LPCV P/N 1001447-4 having less than 2000 FH since new or since overhaul. (c) Within the next 200 FH after 25 Nov. 2008, the effectiv e date of revision 3 of this AD, or before any LPCV P/N 1001447-4 installed on right engine reaches 2000 FH since new or since overhaul, whichever occurs later, replace the valve with a new or serviceable LPCV P/N 1001447-4 having less than 2000 FH since new or since overhaul. Repeat the replacement on the right engine at the intervals not to exceed 2000 component flight hours since new or last overhaul, andCONTINUATION OF AD No .: 2006-11-01R4 - A MENDMENT 39-1266 PAGE No .: 2/2

Form F-900-04E (d) Within the next 200 FH after the effective date of this AD or before any LPCV P/N 1001447-4 installed on left engine reaches 2000 FH since new or last overhau l, whichever occurs later, replace the valve with a new or serviceable LPCV P/N 1001447-4 having less than 2000 FH since new or since overhaul. Repeat the replacement on the left engine at the intervals not to exceed 2000 component flight hours since new or last overhaul.

NOTE 1: After the effective date of this AD, the insta llation on the left and right engines of a LPCV 1001447-4 valve is only allowed if it has less th an 2000 FH since new or last overhaul prior to installation.

NOTE 2: After the effective date of this AD, insta llation of any LPCV P/N 1001447-3 is prohibited. Any LPCV P/N 1001447-3 already installed may remain in service until reaching the flight hour limit defined by paragraphs (a) and (b) of this AD.

NOTE 3: The above procedures are considered an interim solution until a final action is identified, at which time the ANAC may consider the issuance of further rulemaking. The detailed instructions and procedures to accomplish this AD are described in the Embraer Service Bulletins No. 190-36-0006 original issue or 190-36-0014 Rev. 01, as applicable, or their respective further revisions approved by the ANAC. 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: 55 (21) 3501-5467 20.071-001 - Rio de Janeiro – RJ, BRAZIL 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 availa ble in the files of the Aeronautical Products Certification Branch (GGCP) of the National Civil Aviation Agency (ANAC).