# -~ ANAC AGENCIA NACIONAL OE AVIAr;Ao CIVIL

- BRAZIL 

## BRAZILIAN AIRWORT~INESS DIRECTIVE AD No.: 2010.Q7.QZ Effective Date: 31 Jul. 2010 The follo· ...•

ing Brazilian Ai~orthiness Directive (AD) -' issued by the .>"g6ncia Nac:ional de !'wia"ao Civil {f\.NACIin accorddnce with provisions of O1apLer IV, Tit-Ie H, of C6digo B<"<I5i1"i= de I\eronAutica ~ J;.owNo. 1. S6S <;tated IS Decerrtler 19116 - ".,'C Regul_nlo Brasil"iro de Horrologa<;lioAeroniiutica (RBHA.1 39, applies to all ain:raft registered in the Reg~stro Aeror.auti= BrQ5ileiro. Noper"""..•.""'"yope:<atl! an ai.l:=aft t.o ·~hich this AD"'?plies. unless it has previCR.>slyc<lI1Plied • ••. il:.-" d'..e .-equircaents eat.iOblis!led herein. AD No. 2010-07-02 - EMBRAER- Amendment 39-1308. APPLICABILITY: This Airworthiness Directive is applicable to Embracr model ERJ 170~100STD, ERJ 170-100 LR, ERJ 170-100 SU, ER1170-100 SE, ERJ 170-200 STD, ERJ 170-200 LR and ERJ 170-200 SU airplanes, all serial numbers.

CANCELLATION IREVISION: Not applicable. REASON: It has been found the possibility of righl hand (RH) engine compressor stall after the Auxiliary Power Unit (APU) becomes the active bleed Aourceforthe leftsidc.

The most critical condition identified is":

-Both engines close to idle (e.g.: descent phasc); and

-APU running; and

-APU bleed bUllonpushed in. Inthis condition, ifthe left hand (LH) engine fails, the APU bleed valve and the crossbleed valve may be both in the open position fora few seconds, what may lead to abackprcssure in RH engine depending on APU bleed pressure. Such backpressure may cause an RH engine compressor stall, culminating in adual engine rail,u.re.
. I
.... ,

Smce thISCOndltlOnaffects fhght Sllretr' a correctIve actIOnISreqUIred. Thus, suffiCient rcason exists 10request t;ompliance with this AD.

REOUIR£D ACTION: Revision ofthe approved Airplane Flight Manual (AFM). COMPLIANCE: 

# I Required as indicated below, unless already accomplished. Within 10 days after the effective dat~ of this AD, re\'ise the Limitation Section ofthe AFM to include the infonrotion in the EMDRAER Operational Bulletin (OB) 170-001109 Revision 01, dated Feb 10,2010.

NOTE 1: The action required by this AD may be done by inserting a copy of the OB specified by this AD into the a lica --~

N TE 2~The limitation specified by ~hisAD is considered an i:rilllS<JlUtiOn ~ a final action is identified, <ll wllC tIme t e ANAC may fonsl{er l1ieissuance 01a further rulemnking.

Record compliance with this ADin the applicable maintenallce log bO(lk. CONTACT: 

# I For additional technical information, contact: National Civil Aviation Agency

- ANACCONTINUATION OFAD No.: 2010-07-02 - AMENOMENT 39

## J1308 Aeronautical Products Certification Branch

- GGCP Av. Casslano Ricardo, 521, Bloco.l3, 2'?andar, Parque Residencial Aquarius fax: 55(12)3797-2330 12246-870

- Sao

### Jose dos Campos

-

## sr, BRAZIL E-mail: pac@anac.gov.br APPROVAL: .tillEM1R ANTONIO DA SILVA General Manager 

### GGep DING [SHIKURA Airworthiness Superintendent



### ANAC PAGENo.: 212

NOTE: Original in Portuguese language signed and available in the files of the Aeronautical Products Certification Branch (GGer) ohhe Naliohal Civil Aviation Agency (ANAC).

Form F·900·04E