# 9 ' ANA C Agenci a Naciona l d e Aviaga o Civi l Of . 980/2010/GGCP/SAR-ANA C Sao Jos e do s Campos , 2 8 Jul ^ 201 0 Docke t Managemen t

Facility U S Departmen t

o f Transportatio n 120 0 Ne w Jerse y Avenue , S E Wes t Buildin g Groun dFloo r Roo mW12-14 0 Washington , D C 2059 0 US A Subject : Enclosure : 1 - Petitio nfor exemptio n- Embrae r

lette r GCF-0818/201 0 date d2 6 Jul y 2010 . EMB-135B J - MAJO RCHANG EDC A 0145-000-00020-2008/FA A - PETITIO NFO REXEMPTIO NAMENDMEN T - 1 4 CF R§ 25.90 1 (c) .

Dear Sir/Madam , 1 . ANAC receive dan dendorse dapetitio nt o amen danexemption , fromEmbraer , for 1 4 CF R§ 25.90 1 (c) . 2 . Th e origina l signe dcop y o f th e petitio ni s enclosed . 3 . Mr . Fabian o Hemande s i s th e projec t officer assigne dfor

thi s program . Fo r additional informatio no nthi s subject , h e may b e contacte ddirectl y b y telephon e at 5 5 (12 ) 3797-2623 , b y fa x at 5 5 (12 ) 3797-233 0 o r

b y emai l at

fabiano.hemandes@anac.gov.br . Your s sincerely ,

FH/f h Copias : LS E1 Embrae r (b y e-mail ) Ademi r Antojii o d aSilv a GeneraTManage r Aeronautica l Produc t

Certificatio nBranc h

PROTOCOL O ANA C 00800.103078/2010-4 0

SuperintendSnci ad e Aeronavegabilidad e - SAR GerSncia-Geral d e Certifica9a o d e Produt o Aeroniutic o - GGC P Avenid aCassian o Ricardo , 52 1 - Ed . Aquariu s Cente r - Bloc o B - 2

^ andar - Parqu e Residencia l Aquariu s 12246-87 0 - Sa o Jos 6 do s Campo s - S P- Brasi l - Tel. : 5 5 (12 ) 3797-252 5 - Fax : 5 5 (12 ) 3797-233 0 www.anac.gov.br/certificaca oJul y26,2010 . - < EMBRAE R

GCF-0818/2010-1/ 5 JOB/jo b Embrae r Empres a Brasileir a d e Aeron^utic a S.A . Av . Brigadeir o Fari a Lima , 2.17 0 12227-90 1 - S.J . do s Campo s - S P Brazi l Phone : (5512)3309-071 4 Fax:(5 5 12)3927-118 4 PC:17 9 U.S . Departmen t Transportatio n Docke t Managemen t Syste m 40 0 7t h Street , SW , Roo m P L 40 1 Washington , D C 20591-0001 . US A Subject : EMB-135BJ - FA AValidatio n

Embrae rPetitio n t o amen d th e exemptio n grante d b ydocumen t (FA A Exemptio n no . 7933) , fro m th e requiremen t o f 14CF R 25.901(c) , fo rth e EM B 13 5 B J (Legac yEnhanced ) equippe d wit h th e AE3007A 2 engines . Gentlemen :
1 Pleas e fin d enclose d Embraer' s petitio n t o amen d th e exemptio n grante d b ydocumen t i (FA AExemptio n no . 7933) , fro m th e requiremen t o f 14CF R 25.90 1 (c) , fo rth e EM B 13 5 j B J (Legac yEnhanced ) equippe d wit h th e AE3007A 2 engines .

Bes t Regards , RiGiKioiBMeMlontaAndff

t FOB . Sergi o August o Vian a d e Carvalh o Ainvorthlnes s Manage r

C.c : FA A- Mr.Sanja yRalha n - Progra m Manage r- EM B 13 5 B J ANA C - Mr . Fabian o Hemande s - Progra m Manage r- EMB-13 5 B J

### GCF-0818/2010-2/ 5 

## - ^ EMBRAE R

Petitio n t o amen d th e exemptio n grante d b ydocumen t (FA

AExemptio n no . 7933) Summar y Petitioner : EMBRAE R Empres a Brasileira d e Aerondiutica S/ A

Section s o

f th e Regulatio n Affected : 1 4 CF R § 25.90 1 (c ) Amendments 25- 1 throug h 25 - 84 , an d additiona l requirements a s pe rI P G- 1 originate d fro m th e significan t majo r modificatio n presente d i n th e DC A0145-000-00020-200 8 "EMB-135B J Performance Enhancements" . I Descriptio n o f Relief Sought : Exemptio n o f EMBRAE R EM B 13

5 BJ Aircraf

t fro m th e n o I singl e failure requirements o f 14CF R 25.90 1 (c

) a s i t relate s t o uncontrollabl e hig h thrus t ' ^ failur e conditions . 1 I i II I fGCF-0818/2010-3/5 

## - ^ EMBRAE R

Embrae rrespectfull ysubmit s th e enclose d Petitio n fo ra n exemptio n fo rth e EMB-135B J mode l wit h th e modification s presente d i n th e DC A0145-000-00020-2008/FAA , herei n calle d EMB-135B J Enhanced , fro m th e n o singl e failur e requirement s o f 14CF R 25.90 1 (c) a s i t relate s t o uncontrollabl e hig h thrus t failur e conditions . Embrae rpropose s t o amen d th e FAAExemptio n no . 793 3 grante d t o EMB-135B J equippe d wit h engin e AE3007A1 E fro m requiremen t 14CF R 25.901(c ) fo rth e EMB 135B J Enhance d equippe d wit h th e AE3007A 2 engine . TEX TO F REQUIREMEN TFO R WHIC H EXEMPTIO N I S SOUGH T 1 4 CF R § 25.901(c ) "Installation " (c) Fo reac h powerplan t an d auxiliarypowe runi t installation , i t mus t b e establishe d tha t n o singl e failur e o rmalfunctio n o rprobabl e combinatio n of failure s wil l jeopardiz e th e saf e operatio n o f th e airplan e excep t tha t th e failur e o f structura l element s nee d no t b e considere d I f th e probabilit yo f suc h failur e i s extremel yremote . GROUND S SUPPORTIN G EXEMPTIO N Th e EMB-145X R an d EMB-135BJ , previou s model s o f th e Legac yEnhanced , hav e receive d partia l exemptio n o f complianc e wit h th e requiremen t sinc e ther e wer e thre e scenarios , al l o f the m o n ground , no t successfull ydemonstrate d t o b e entirel yi n accordanc e wit h th e requirement . FAAhav e grante d exemptio n t o thes e model s throug h Exemption s No . 7908 (Octobe r21 , 2001 , fo rEMB-145XR ) an d No . 793 3 (Decembe r12 , 200 1 fo rEMB-135BJ) . Th e EMB-135B J Enhance d i s equippe d wit h Rolls-Royc e AE3007A 2 engines , a modificatio n ove rth e previou s engine model , th e AE3007A1E . Thi s engin e modificatio n consist s of a ne wfa n modul e wit h fewe rfa n blade s (2 2 instea d o f 2 4 o n A1E ) an d ne w spinne ramon g othe rcomponent s o f fa n module . Pleas e se e th e figur e belo wwit h th e mai n difference s fro m A1 E an d A 2 engines . A1 E part s ar e represente d I n gree n an d A 2 one s i n blue .

### GCF-0818/2010-4/ 5 

### - ^ EMBF^AE R

Al l th e rest o

f th e engin e i s maintaine d th e sam e a s th e A1 E engine , includin g compressor , combustio n chamber , turbines , exhaust , FPM U (Fue l Pum p an d Meterin g Unit) & FADE C hardware , FADE C software i s bein g update d t o receive A 2 thrus t table s amon g othe rmodifications/improvements . Th e AE3007A

2 engin e Ma

xTO (Tak

e Off ) thrus t (902 2 Ibf

) ha s increase d abou t 14% , comparin g t o th e AE3007A1 E (7974 Ibf ) engin e currentl yuse d o n EMB135 BJ , bu t th e maximu m pea k

thrus t durin g a MM V (Mai n Meterin g Valve ) positio n failur e (full yopen ) i n th e AE3007A

2 i s 10,50 1 Ibf , against th e 10,15 0 Ibf . Aircraf t handlin g qualitie s analysi s fo rth e Uncontrollabl e Hig h Thrus t (UHT ) scenario s (MMV full yopen) , fo rth e EMB135B J wit h AE3007A

2 engine s showe d that wit h th e additiona l thrus t increas e (3.5%) , th e result s are simila rt o th e one s obtaine d wit h AE3007A1 E engines . Smal l difference s were foun d betwee n th e require d fligh t contro l surface s deflection s fo rth e EMB-135BJ (Legac y600 ) an d EMB-135BJ Enhance d (Legac y650 ) (les s tha n 1 degree ) an d th e deflection s are fa rfro m an ydetent .

### GCF-0818/2010-5/ 5 

## - ^ EMBRAE R

Therefore , al l UH Tanalysi s results fro m th e EMB135BJ wit h AE3007A1 E engine s are applicabl e t o th e EMB135BJ wit h AE3007A 2 engines . Th e UHTprotectio n logi can d correction s Implemente d i n th e EMB145 famil yFADE C since firs t certificatio n have show n positive results wit h almost 1 3 millio n fligh t hour s accumulate d wit h n o safet yissue s sinc e th e last UH Teven t i n 2003 . AE3007A 2 FADE C i s inheritin g al l EMB145 famil yFADE C improvements an d correction s implemente d durin g it s history . Durin g a meetin g hel d durin g Ma y201 0 at FA

Afacilitie s i n Seattl e wit h FAA , Embrae r an d Roll s Royce i t wa s discusse d that th e existin g exemptio n shoul d b e amende d an d sta yvali d fo ra perio d of fou ryear s afte rFA

Avalidation . Durin g thi s period , Embrae r an d Rolls-Royce wil l develo p an d mak e availabl e improve d UH Tlogi cwhic h wil l shutdow n engine s upo n detectin g hig h N 1 an d wit h a TL Acomman d at o rles s tha n idle . Thi s improve d UH Tlogi ci s th e onl yknow n practica l actio n (cost beneficia l an d technologicall yfeasible ) t o addres s th e scenario s exempte d b yth e memo , i n orde rt o minimiz e th e advers e effect s o n safet yassociate d wit h grantin g exemptio n fro m 14CF R 25.90 1 (c ) fo rth e EMB-135BJ Equippe d wit h A E 3007A 2 engines . Base d o n th e above consideration s Embrae rrespectfull ypropose s t o amen d th e exemptio n grante d b

ydocumen t (FA

AExemptio n no . 7933) , fro m th e requiremen t of 14CF R 25.901(c) , fo rth e EM B 135 BJ (Legac yEnhanced ) equippe d wit h th e AE3007A 2 engines .