# (A , Ronal d J
. Hinderberge r Lead Administrato r Delegate d Compliance Org

. Commercia l Airplane s Th e Boein g Compan y P.O

. Bo x370 7 M C 67-L R Seattle , W

A98124-220 7


### JU L

### 2 0 201 0 BDCO-lO-0304 1 U.S
. Departmen t

o f Transportatio n Docke t Operation s Wes t Buildin g Groun dFloor , Roo mW12-14 0 120 0 Ne w Jerse y Avenue , S.E
. Washington , D.C
. 2059 0 C 3 Subject :

Model : BDC O Projec t

No. : EAS AProjec t

No. : EAS ALevel : Branch/Pane l No. : Branch/Pane l Name : Respons e Due : Reference(s) :

Specia l Instructions : Thi s lette r

i s t o submit : Revise dPetitio nfor Exemptio nt o 1 4 CF R 25.783(g ) Amendmen t

23 , 1 4 CFR25.807(a)(1 ) Amendmen t

67 , 1 4 CFR25.809(a ) Amendmen t 116 , 1 4 CFR25.813(a ) Amendmen t 4 6 an d Petitio nt o Amen dExemptio n9793 A 747-8 F PS05-021 2 P.EASA.IM.A.16 4 N/ A ANM-150 S Cabi nSafet

y Novembe r

6 , 201 0 (a ) BDC O lette r

BDCO-10-02194 , "Petitio nfor Exemptio nt o 1 4 CFR25.783(g ) Amendmen t

23 , 1 4 CFR25.807(a)(1 ) Amendmen t

67 , 1 4 CFR25.809(a ) Amendmen t

116 , 1 4 CFR25.813(a ) Amendmen t

4 6 an dPetitio nto Amen d Exemptio n9793A, " date dJun e 25 , 201 0 Pleas e replac e th e referenc e (a ) lette r withth e subjec t submittal
. (X ) Revise dPetitio nfor

a nExemptio n Pleas e findenclose dth e revise dBoein g 747-8/-8 FPetitio nfor Exemptio nfrom 1 4 CFR25.783(g ) Amendmen t 23 , 1 4 CFR25.807(a)(1 ) Amendmen t 67 , 1 4 CFR25.809(a ) Amendmen t 116 , 1 4 CFR25.813(a ) Amendmen t 4 6 an dPetitio n t o Amen dExemptio n9793A
. Subjec t submittal supersede s referenc e (a)
. Boein g request s t o b e notifie dwhe nth e petitio nprocessin g ha s completed
. Thi s lette r

i s bein g sen t

for : (X ) Postin g to th e Federal Docke t( ^ Pag e 2 Mr
. Breneman BDCO-10-0304 1 Pleas e contac t

thi s offic e o r

th e followin g individual s i f yo u hav e furthe r questions : Projec t Administrato r

(PA) : Certificatio nSpecialist : J
. Potocki G
. Gillett e 425-266-747 3

425-266-748 4 Th e informatio nbein g forwarde dto th e FAA b y o r withthi s correspondenc e i s fo r th e exclusiv e purpos e o f support o f applications for

o r amendment s to Typ e Certificates , i s considere dproprietary t o Th e Boein g Compan y and/o r it s suppliers , an di s provide do naconfidential basis
. Th e dat aprovide dshoul db e returne dt o Boein g immediatel y followin g us e b y th e FAA , includin g any copie s thereo f whic hth e FAA may b e require dto mak e inth e cours e o f

it s review
. Boein g doe s no t authoriz e th e FAA t o retai nan y portio no f th e material s bein g supplied
. Very trul y yours .

•X^hristin e Thompso n LeadProjec t

Administrator , Developmen t Project s (425 ) 266-6572 , M C 67-L R FAX : (425)294-934 0 Enclosures : Revise dPetitio nfo r Exemptio nfro m1 4 CF R25.783(g ) Amendmen t

23,1 4 CF R25.807(a)(1 ) Amendmen t 67 , 1 4 CF R25.809(a ) Amendmen t 116,1 4 CF R25.813(a ) Amendmen t

4 6 an dPetitio nt o Amen dExemptio n9793A
. cc Nam e Gar y Oltman Roxann e Pinkstaf

f Julie Zachary Ren e Buendi a Shanno nLenno n Jaso nClaar Lette r ED T ED T ED T ED T ED T ED T Enclosure s

ED T ED T ED T ED T ED T ED T Comment s

ANM-IOO S ANM-102 S ANM-102 S ANM-150 S ANM-150 S ANM-11 5Enclosur e to BDCO-10-0304 1

Petitio n fo rExemptio n t o 1 4 CF R 25.783(g ) Amendmen t 23,1 4 CF R 25.807(a)(1 ) Amendmen t 67,1 4 CF R 25.809(a ) Amendmen t 116,1 4 CF R 25.813(a ) Amendmen t 4 6 an d Petitio n t o Amen d Exemptio n 9793 A Nam e an d Addres s o f tli e Petitione r CM

. Thompson , Manager , Lea d Projec t Administrator , Developmen t Project s Th e Boein g Company , P O Bo x3707 , Seattle , Washington , 9812 4 B
. Sectio n o f tli e Cod e o f Federa l Regulation s (CFRs ) tiia t ar e affecte d A s provide d fo ri n 1 4 CF R 11.61(b) , Boein g hereb ypetition s fo rexemptio n t o th e followin g CFRs : Reaulatio n 1 4 CF R 25.783(g )
1 4 CF R 25.807(a)(1 )

1 4 CF R 25.809(a )

1 4 CF R 25.813(a ) At

Amendmen t 2 3

6 7

11 6

4 6 Whic h Reauire s

Eac h passenge rentrydoo ri n th e sid e ofth e fuselag e mus t qualif y a s a Typ e A , Typ e 1 , o rTyp e I I passenge remergenc yexi t an d mus t mee t th e requirement s o fSees

. 25.80 7 throug h 25.81 3 tha t appl yt o tha t typ e o

fpassenge remergenc yexi t Typ e an d location
. Fo rth e purpos e o fthi s part , th e Type s an d location s of exit s ar e a s follows : (1 ) Typ e 1
. Thi s Typ e mus t hav e a rectangula ropenin g ofno t les s tha n 2 4 inche s wid e b y4 8 inche s high , wit h corne rradi i no t greate rtha n one-thir d th e widt h o fth e exit
. Typ e 1 exit s mus t b e floo rleve l exits
. Eac h emergenc yexit , includin g eac h fligh t cre wemergenc yexit , mus t b e a movabl e doo ro rhatc h i n th e externa l wall s ofth e fuselage , allowin g a n unobstructe d openin g t o th e outside
. I n addition , eac h emergenc yexi t mus t hav e mean s t o permi t viewin g of th e condition s outsid e th e exi t whe n th e exi t i s closed...
. Mean s mus t als o b e provide d t o permi t viewin g o fth e likel yarea s of evacue e groun d contact
. Th e likel yarea s ofevacue e groun d contac t mus t b e viewabl e during al l lightin g condition s wit h th e landin g gea r extende d a s wel l a s i n al l condition s o flandin g gea rcollapse
. Apassagewa ybetwee n individua l passenge rareas , an d leadin g fro m eac h aisl e t o eac h Typ e 1 an d Typ e I I emergenc yexit
. Thes e passageway s mus t b e unobstructe d an d a t leas t 2 0 inche s wide
. A s provide d fo ri n 1 4 CF R 11.61(b) , Boein g hereb ypetition s fo rrevisio n t o Limitatio n 1 6 i n Exemptio n 9793A : Requiremen t Limitatio n Whic h Reauire s Exemptio n 9793 A 1 6 Fo rairplane s wit h th e optional escap e slid e installe d a t th e cre wdoo r Boein g mus t develo p instruction s fo rmovin g th e escap e slid e aft t o clea rth e projecte d openin g ofth e exi t fro m outsid e th e airplane
. Thes e instruction s mus t b e adde d t o th e outboar d sid e o fth e escap e slid e assembl ys o tha t rescu e personne l ca n rea d th e instruction s an d mov e th e escap e slid e ou t ofth e way . Thes e instruction s mus t b e demonstrate d t o b e effectiv e fo rrescu e personnel
. Pag e 1 o f 1 0Enclosur e to BDCO-10-0304 1



### Th e exten t o f relie f bein g sough t Reaulatio n 1 4 CF R 25.78 3 (g ) Amendmen t 2 3

1 4 CF R 25.807(a)(1 ) Amendmen t 6 7
1 4 CF R 25.809(a ) Amendmen t 11 6

1 4 CF R 25.813(a ) Amendmen t 4 6

Limitatio n 1 6 fro m Exemptio n 9793 A Reauires :

Th e cre wdoo r an d Doo r1 L H t o b e considere d entrydoor s an d thu s woul d nee d t o b e a Typ e A , 1 o ri l exit
.
Th e cre wdoo ra s a Typ e 1 exi t t o b e a floo rleve l exit
.
Th e cre wdoo ra s a n emergenc yexi t t o hav e a mean s t o vie wth e evacue e groun d contac t are a i n al l combination s of gea rcollapse
.
Th e cre wdoo ra s a Typ e 1 exi t t o hav e a 2 0 inc h passagewa y

Th e cre wdoo r escap e slid e b e labele d wit h instruction s t o mov e th e escap e slid e af t t o clea r th e projecte d openin g o f th e exi t Relie fi s necessarvbecause :

Mai n dec k

Doo r1 L H i s a Typ e Asiz e doo rwithou t an y evacuatio n assis t mean s an d thu s doe s no t mee t thi s regulation
. Thi s i s unchange d fro m th e 747-400 F design
. Th e configuratio n ofth e uppe rdec k cre wdoo rdoe s no t mee t al l Typ e 1 exi t requirement s i n sectio n 1 4 CF R 25.80 7 throug h 1 4 CF R 25.81 3 althoug h th e fuselag e cutou t meet s th e Typ e 1 exi t dimensions
. Som e o

fth e requirement s no t me t ar e covere d i n Exemptio n No
. 9793/9793 Afo rth e 747-8F;howeve rth e Exemptio n 9793/9793 Adoe s no t provid e relie ffro m thi s requiremen t t o provid e a Typ e A , 1 , o rI I siz e exit
. Th e cre wdoo rca n n o longe rb e considere d a Typ e 1 floo rleve l exi t du e t o a step-u p t o th e exi t whe n th e airplan e i s configure d wit h inerti a reel s a s th e onl yevacuatio n means . Apreviousl y grante d Exemptio n No
. 973 5 ha s acknowledge d thi s sam e conditio n o n th e 747-400 F an d considere d th e ratin g o fth e exi t a s a Typ e III
. Th e provide d viewin g windo wo n th e cre wdoo ri s no t capabl e of viewin g th e evacue e groun d contac t are a i n al l combination s of gea rcollaps e fo reithe revacuatio n mean s prio rt o th e exi t bein g opened
. Th e configuratio n ofth e 747-8 F airplan e include s exterio rbody-mounte d light s whic h wil l mee t th e requiremen t fo rlightin g fo rbot h evacuatio n means . Asimila rgran t ofExemptio n No
. 969 6 wa s extende d fo rth e 767-300BC F base d o n th e exi t porthol e combine d wit h inerti a ree l assis t means , si xperso n occupancy , an d additiona l cre w procedure s whic h wil l b e draw n upo n fo rth e 747-8F
. Th e passagewa yt o th e exi t i s les s tha n 2 0 inche s wit h th e manuall ydeploye d slid e installe d i n th e 747-8 F interio r configuration
. A s a custome rselectabl e option , th e 747-400 F manually-deploye d escap e slid e at th e cre wdoo rha s bee n selecte d b ya majorit y( 5 o f6 ) o f747-8 F airlin e customer s a s a n additiona l evacuatio n mean s a t tha t location
. Althoug h th e interio rconfiguratio n fo rth e 747-8 F i s change d fro m th e 747 - 400F , a simila rconditio n exis t o n th e 747-400F
. Th e interio rconfiguratio n ofth e 747-8 F doe s no t allo wth e escap e slid e t o b e moved fa renoug h af t t o directl ycompl ywit h th e requiremen t t o "clear " th e projecte d opening
. However , th e desig n an d configuratio n ofth e 747-8 F doe s allo wth e slid e t o b e moved af t t o allo woutsid e acces s b yrescu e personne l whic h wil l b e demonstrated
. Thu s th e Limitatio n coul d instea d requir e th e cre wdoo rb e show n t o allo wacces s int o th e airplan e fro m th e outsid e b yrescu e personnel
. Limitatio n 1 6 i s t o addres s a concer n i n Exemptio n 9793 Atha t "th e escap e slid e i s partiall yblockin g th e acces s t o th e airplan e whe n th e cre wservic e doo ri s opene d fro m th e outside , whic h ma y preven t rescu e personne l fro m rapidl yenterin g th e airplan e i n a n emergency. " Thi s concer n ca n b e addresse d withou t full y clearin g th e projecte d doo ropening
. Ther e i s n o simila rrequiremen t i n Exemptio n serie s 187 0 fo r thi s simila rconfiguratio n an d conditio n o n th e 747-200F/400 F airplane s whic h hav e a prove n safet yrecord
. Pag e 2 o f 1 0Enclosur e to BDCO-10-0304 1

Descriptio n o f th e Issu e Th e Mode l 747-8 F i s a derivativ e aircraf t base d o n th e 747-400F
. Th e fuselag e of th e 747-8 F i s 220 " longe rtha n th e 747-400F
. Th e 747-8 F emergenc yexits , cre w doo rwindow , exterio rbody-mounte d ligh t fo rth e escap e slide , an d th e escap e mean s ar e identica l t o th e 747-400 F wit h th e exceptio n tha t th e escap e slid e i s a custome rselectable optio n o n th e 747-8 F wher e a s i t was basi co n th e 747-400F
. Fo rth e 747-8F , th e escap e slid e ha s bee n selecte d b ya majorit y( 5 o f 6 ) of th e airlin e customer s a s th e evacuatio n mean s a t th e cre wdoor
. Lik e th e 747-400F , th e 747-8 F ha s a require d fligh t cre wo ftw o (2 ) an d i s allowe d th e carriag e of u p t o si x(6 ) supernumeraries
. Lik e th e 747-400 F an d it s predecessors , th e 747-8 F AF M wil l limi t th e airplan e t o eigh t (8 ) occupants
. Th e eigh t (8 ) inerti a ree l descen t device s locate d o n th e fligh t dec k ar e identica l i n part numbe ran d locatio n t o th e 747-400 F an d wil l b e include d o n al l 747-8 F airplanes , wit h on e fo reac h airplan e occupan t t o us e eithe rthroug h th e cre wdoo ro rfro m th e fligh t dec k

overhea d exit
. Additionally , ther e ar e eigh t (8 ) harnesse s installe d basi c i n th e 747-8 F supernumeraryseatin g areas , tw o (2 ) mor e tha n th e 747-400F , on e fo reac h occupan t t o do n an d connec t t o thei rdescen t devic e befor e evacuatin g th e airplane
. Th e optiona l manually-deploye d escap e slid e i s attache d t o a platfor m tha t move s for e an d af t o n rail s insid e of th e uppe rdec k cre wdoor
. Whe n th e escap e slid e i s deploye d throug h th e cre wdoor , th e fonward sid e ofth e platfor m i s stationaryan d remain s i n th e interio rcreatin g th e boundaryt o th e passagewa you t th e exit
. Th e escap e slid e syste m als o ha s a flexible , non-inflatable , chut e hinge d t o th e platfor m t o assis t a s a guid e i n slid e deployment
. Thi s chut e als o remain s i n th e interio r creatin g a boundaryt o th e passagewa you t th e exit
. Whe n th e optiona l escap e slid e i s installe d th e 2 0 inc h passagewa yleadin g t o th e exi t i s no t maintaine d fro m th e slid e platfor m t o th e interio rmonument , no ri s th e escap e slid e chut e itsel f 2 0 inche s Th e curren t desig n o n th e 747-8 F provide s th e capabilit yt o mov e th e escap e slid e af t providin g acces s fo rrescu e personne l wit h instruction s tha t ar e affixe d t o th e outboar d sid e of th e slid e pac k suc h tha t the yca n b e see n whe n th e doo ri s opene d fro m th e outside
. Th e abilit yt o gai n access , includin g th e effectivenes s of th e instructions , wil l b e demonstrate d b yrescu e personne l i n accordanc e wit h Exemptio n 9793 ALimitatio n 16
. Ane wbody-mounte d exterio rligh t was adde d t o th e 747-8F
. Thi s ne wligh t illuminate s th e groun d contac t are a of th e inerti a reels , i n al l combination s ofgea r collapse , befor e an d afte rdoo ropening
. Th e existin g exterio rbody-mounte d ligh t illuminate s th e groun d contac t are a of th e escap e slide , i n al l combination s o f gea r collaps e whe n th e slid e i s usable , befor e an d afte rdoo ropening
. Bot h exterio r light s wil l b e installe d o n al l airplane s regardles s o f evacuatio n mean s selecte d b y th e customer
. Thes e light s ar e activate d (1 ) automaticall yupo n los s o f mai n electrica l powe r(2 8 VD C bus ) whe n th e syste m i s armed , o r(2 ) manuall yvi a th e Pag e 3 o f 1 0Enclosur e to BDCO-10-0304 1



### emergenc

yligh t switche s locate d o n th e fligh t dec k o ri n th e supernumerar

yseatin g area . Statemen t o f N o Advers e affec t o n Safet y Th e petitione rstrive s t o provid e acceptabl e safet ycondition s suc h that 747-8 F carg o operator s ca n safel yoperat e thei rairplan e wit h evacuatio n mean s an d procedure s consisten t wit h th e curren t fleet
. Th e majorit y(5 o f6 ) o fth e airlin e customer

s that hav e purchase d th e 747-8 F als o operat e fleet s o fearlie rmode l 74 7 Freighters , includin g th e 747-400F
. Th e surest , safest , an d mos t cost effective manne ro f operatin g thes e carg o aircraf t i s t o have consisten t airplan e design s an d crew/supernumerar

ytrainin g wit h respec

t t o evacuatio n safetyfeature s o fth e airplane
. Agran t o

f Exemptio n wil l resul t i n consisten t operator' s procedure s fo r evacuatio n o

f th e 747-8 F wit h th e 747-400 F flee t whe n th e escap e slid e i s installe d an d simila rt o othe rairplan e model s wit h onl yinerti a reel s installed , thu s enhancin g safety
. Grantin g th e Exemptio n t o 1 4 CF R 25.783(g ) Amendmen t 2 3 fo rDoo r1 L H an d th e uppe rdec k

crewdoo rwil l not hav

e a n appreciabl e affec

t o n safet ybase d upo n th e followin g factors whic h ar e summarize d her

e an d discusse d a s necessar yi n mor e detai l below : • Limite d numbe ro

f traine d supernumerarie s • Specifi ct o Doo r1 LH , whil e i t wil l b e use d fo rentr yi t wil l not b e marke d wit h an yexi t sign s visibl e fro m th e upperdec k supernumerar

yseatin g are a • Specifi ct o th e crewdoor , whil e i t i s size d a s a Typ e I door , i t wil l not practicall yb e use d as a n entr ydoo rdu e t o it' s locatio n o n th e uppe rdec k approximatel y2 6 fee t above th e ground
. • Th e crewdoo rwil l b e marke d wit h exi t sign s visibl e fro m th e upperdec k supernumerar

yseatin g are a an d hav

e appropriat e evacuatio n mean s availabl e a

t th e exit
. Previousl yth e FA

Arecognize d i n Exemptio n No
. 480 8 fo rth e 757-200P F "Th e inten t o f 1 4 CF R 25.783(g ) i s t o ensure that th e doo rthroug h whic h peopl e ente ra n airplan e i s als o useabl e a s a n emergenc yexit"
. "Becaus e o f th e bette rtrained , operator-approved , smal l numbe ro fnoncrewmember s allowe d i n th e fligh t deck , th e FA Afind s tha t th e entr

ydoo rprovide d i n th e Mode l 757-200P F ca n safetyb e use d a s a n emergenc

yexi t an d that th e requirement s that th e entr ydoo rb e a Type A , I o r I I i s unnecessary. " Althoug h th e 747-8 F has a differen t configuratio n tha n th e 757 - 200PF , th e circumstance s ar e simila ri n trainin g an d smal l numbe ro fnon-crew members
. Th e personne l (maximu m o f8 ) aboard th e 747-8 F ar e require d t o be briefe d b yth e fligh t crewprio rt o eac h fligh t o n th e us e o fth e exit s i n accordance wit h Exemptio n No
. 9793/9793A

. Thi s additiona l leve l o fknowledg e afforde d t o thes e occupant s whe n compare d t o th e norma l passenge rprovide s a n enhancemen t i n evacuatio n normall yafforded
. Doo r1 L H wil l b e use d as th e entr y doo ro n th e 747-8 F howeve ri t wil l not b e use d a s th e emergenc yexit
. I t wil l be ou t o f sigh t an d n o exi t sign s wil l lea d personne l t o Doo r1 L H once th e supernumerarie s hav e take n thei rseat s i n th e uppe rdec k thu s i t i s unnecessar

yt o mak e i t a useabl e emergenc

yexi t wit h evacuatio n mean s a s othe rexits wil l be available , appropriatel y Pag e 4 o f 1 0Enclosur e to BDCO-10-0304 1

marked , an d equippe d wit h th e evacuatio n mean s (sam e a s previou s 74 7 Freighte r models)
. Grantin g th e Exemptio n t o 25.807(a)(1 ) Amendmen t 6 7 an d 1 4 CF R 25.813(a ) Amendmen t 4 6 fo rth e non-floo rleve l exi t an d les s tha n 2 0 inc h passageway , respectively , a t th e uppe rdec k cre wdoo rwil l no t hav e a n appreciabl e affec t o n safet ybase d upo n th e followin g factor s whic h ar e summarize d her e an d discusse d a s necessaryi n mor e detail below : o Limite d numbe ro f traine d supernumerarie s (se e discussion , above ) o Consideratio n of th e cre wdoo rratin g simila rt o a Typ e II I exi t wit h a 1 9 inc h passagewa ybein g maintaine d o a smal l step-u p o f approximatel y8 inche s Pe r1 4 CF R 25.807(c)(1 ) Amendmen t 67 , a pai rof Typ e I exit s woul d allo w40-7 9 passengers , whil e a pai ro f Typ e II I exit s woul d b e sufficien t fo rbetwee n 2 0 an d 3 9 occupants
. I n combinatio n wit h th e fligh t dec k overhea d exit , havin g th e 747-8 F airplan e configure d wit h a Typ e I siz e cu t ou t an d nearl ymeetin g th e Typ e I passagewa yrequirements , whil e onl yneedin g t o provid e evacuatio n capabilit yfo r8 occupants , th e overal l desig n i s considere d sufficientl ysafe
. Whil e a 2 0 inc h passagewa yi s require d fo ra Typ e I size d exit , th e cre wdoo rca n b e considered , base d o n th e numbe ro f passenger s bein g evacuated , simila rt o a Typ e II I exit
. Th e applicabl e regulations , 1 4 CF R 25.813(c)(1)(2 ) Amendmen t 46 , d o no t specif ya passagewa yrequiremen t fo rTyp e II I exit s rathe ronl ytha t th e projecte d openin g ma yno t b e obstructe d an d ther e ma yb e n o interferenc e i n openin g th e exit
. Considerin g th e 747-8 F cre wdoo ra s simila rt o a Typ e II I exit , wit h a metho d of complianc e associate d wit h th e projecte d openin g b yprovidin g a 1 9 inc h passagewa ya t th e cre wdoo ran d n o obstructio n i n openin g th e exit , i s sufficientl y saf e fo rth e 8 occupants
. Astep-u p of 2 0 inche s i s allowe d fo ra Typ e II I exit
. Th e 747-8 F step-u p whe n th e escap e slid e i s no t installe d i s approximatel y8 inche s an d ther e i s n o ste p u p whe n bot h th e inertia l reel s an d slid e ar e installed
. Th e FA A recognize d a simila rconditio n i n Exemptio n No
. 973 5 fo rth e 747-400 F "...hav e a cre wservic e doo rth e siz e o fa Typ e I exit , bu t becaus e th e doo rha s a step-u p insid e th e airplan e i t i s rate d a s a Typ e II I exi t an d i s availabl e fo revacuation".
. Grantin g th e exemptio n t o 1 4 CF R 25.809(a ) Amendmen t 25-11 6 wil l no t adversel y affec t safet ybase d upo n th e followin g factor s whic h ar e summarize d her e an d discusse d i n mor e detail below : • Fligh t dec k

an d supernumerarywindow s • Cre wawarenes s • Manually-deploye d escap e slid e an d inerti a reel s • Exi t heigh t • Exterio rbody-mounte d light s I t i s understoo d 1 4 CF R 25.809(a ) a t Amendmen t 25-11 6 was codifie d t o addres s th e potentia l fo ra cre wmembe ro rsupernumeraryt o mistakenl yope n o rus e a n emergenc yexi t whe n ther e i s a n externa l hazar d (suc h a s a fire , wate ro r terrain/obstacles ) tha t i s no t visibl e (du e t o lac k of mean s t o vie woutsid e and/o r Pag e 5 o f 1 0Enclosur e to BDCO-10-0304 1



### fro m inadequat e lighting ) that coul d pos e a n immediat e threat t o th e occupants o f th e airplane , damag e th e evacuatio n means , pos e a threat t o personne l usin g th e evacuatio n means , and/o rdela yth e evacuation
. Previou s industr

ydesig n practice has provide d outsid e viewin g mean s (windows ) installe d o n o radjacen t t o th e passenge remergenc yexit s i n th e majorit

yo fcases . Additionally , th e larg e fligh t dec k windows provid e a mean s t o viewth e surroundin g are a b yth e fligh t crewas th e airplan e i s o n approach
. Thes e windows hav e prove n a n effective mean s fo rquickl yassessin g condition s outsid e th e emergenc yexi t prio r t o th e emergenc

yexi t bein g opene d i n orde rt o avoi d dela yi n openin g th e emergenc

yexit s an d initiatin g th e evacuation
. I n additio n t o th e fligh t dec k windows , a windowi s installe d i n th e crewdoo ro f th e 747-8F
. Additionally , th e 747-8 F include s thre e standard passenge rsize d windows (fo rth e supernumeraries ) o n th e righ t an d lef t han d sid e o

fth e airplan e af

t o f th e crewdoo ran d locate d i n th e supernumerar ycompartment
. On e window(eac h side ) i s locate d i n th e crewbun k are a o fth e supernumerar

ycompartment
. Al l windows provid e a viewo f th e surroundin g are a wit h th e airplan e restin g o n al l landin g gear . Once th e airplan e has slowe d t o a stop , viewin g o fal l o fth e likel y areas o f evacue e groun d contac t prio rt o th e exi t bein g opene d wil l not b e full y possibl e since the yar

e directl ybeneat h th e aircraf t whe n inerti a reel s ar

e used
. However , a viewo

f th e surroundin g are a as th e airplan e come s t o a sto p as wel l as th e surroundin g viewfro m th e fligh t dec k an d supernumerar

ywindows once stoppe d provide s th e abilityt o mak e assessment s an d appropriat e evacuatio n decision s as follows : o I n mos

t cases , th e presence o

f a fir e i n th e vicinit

yo fth e fligh t dec k

window s an d crewdoo rlarg e enoug h t o b e a hazar d i fth e exi t i s opene d woul d be readil yan d easil yrecognizabl e b yth e fligh t crewas th e airplan e slows t o a stop
. I n thes e cases , th e fligh t crewwoul d comman d evacuatio n fro m th e appropriat e exit
. o Recalling , th e supernumerarie s are require d t o b e briefe d i n th e us e o f th e exits , th e presence o

f a fire o rwate ri n th e surroundin g are a o f th e crewdoo r larg e enoug h t o be a hazar d woul d likel ybe recognize d b yth e supernumerarie s fro m windows i n th e supernumerar yarea , i n conjunctio n wit h th e body-mounte d light s as necessary , an d coul d be communicate d t o th e fligh t crewwhe n determinin g whic h exi t t o utilize
. I t i s understoo d 1 4 CF R 25.809(a ) a t Amendmen t 25-11 6 i s als o t o preven t th e deploymen t o

f a n escap e slid e into a hazard , since thi s deploymen t i s irreversible , an d doo rre-closure i s necessaril yimpede d b yth e deploye d slid e du e t o it s interface wit h floo rstructure immediatel yinboar d o fth e doo rsill
. I n th e cas e o f th e 747-8F , th e evacuatio n mean s i s manually-deploye d afte rth e emergenc yexi t i s opened
. I fa hazar d suc h as fire , water , o rterrai n i s detecte d nea rth e crewdoor , afte rth e doo ri s opened , th e doo rma

ybe easil yclose d agai n becaus e th e manuall ydeploy passenge rescap e slid e o rinerti a reel s woul d not be i n th e wa yo fth e doo r mechanism
. Pag e 6 o f 1 0Enclosur e to BDCO-10-0304 1



### Th e locatio n o

f th e emergenc

yexi t i s approximatel y13. 5 fee t abov e th e wate rlin e i n th e unplanne d ditchin g scenari o whic h i s worst case . Th e crewdoo ri s fa renoug h abov e th e wate rleve l afte ra ditchin g even t suc h that i fthi s emergenc yexi t wer e t o be opene d withou t firs t assessin g outsid e condition s i t coul d easil yan d quickl yb e re-close d withou t consequence . Additionall yth e 747-8 F airplan e i s configure d wit h body-mounte d lights (reference Figur e 5 ) providin g th e illuminatio n i n dar k o f nigh t condition s t o asses s th e surroundin g are a prio rt o emergenc yexi t opening
. Afte remergenc yexi t openin g an d befor e evacuatin g throug h th e exit , makin g a n assessmen t o fsafet yt o evacuat e ca n b e don e b

yviewin g ou t th e ope n exi t utilizin g th e body-mounte d exterio rlight s whic h wil l full yilluminat e th e groun d contac t are a o fbot h evacuatio n mean s before thos e mean s ar e deployed
. Whil e a mean s that provide s viewin g o fth e evacue e groun d contac t are a fo ral l combination s o

f gea rcollaps e doe s not exist fo rth e crewdoo rwhe n equippe d wit h inerti a reel s o rmanually-deploye d escap e slides , th e airplan e desig n provide s a n acceptabl e leve l o

f safet yas note d above
. Simila rcondition s wer

e recognize d an d accepte d b yth e FA Ai n Exemptio n No
. 969 6 fo rth e 767-300BCF

. 'W e agre e i n thi s specifi ccas e wit h th e petitioner' s rational e that i n mos t case s th e presenc e o f a fire i n th e vicinityo fth e lefthan d fligh t dec k windowan d Doo r1 L woul d b e recognizabl e b yth e fligh t dec k crew..."
. "Becaus e th e assis t mean s i s a n inerti a reel , th e evacue e ha s a bi t mor e contro l ove rth e landin g zone..."
. Simila rt o th e inertia l reels , there i s als o contro l ove rth e deploymen t o

f th e optiona l escap e slid e fo rth e 747- 8 an d rational e fo rn o advers e affec t o n safet yfo rth e optiona l slid e i n relatio n t o 1 4 CF R 25.809(a ) i s containe d herein
. Limitatio n 1 6 I t i s propose d that th e FA Aaccep t a n adequat e openin g t o allowacces s fro m outsid e th e airplan e a

t th e crewdoo rb

yprovidin g relieffro m Limitatio n 1 6 o f Exemptio n No
. 9793

Awhic h require s i n part , "Fo rairplane s wit h th e optiona l escap e slid e installe d a t th e cre wdoo rBoein g mus t develo p instruction s fo rmovin g th e escap e slid e aft t o clea rth e projecte d openin g o fth e exi t fro m outsid e th e airplane. " Exemptio n 9793

Anote d a concer n that "th e escap e slid e i s partiall yblockin g th e acces s t o th e airplan e whe n th e cre wservic e doo ri s opene d fro m th e outside , whic h ma ypreven t rescu e personne l fro m rapidl yenterin g th e airplan e i n a n emergency. " A n acceptabl e leve l o fsafet yca n be maintaine d withou t th e specifi c requiremen t t o full yclea rth e projecte d openin g o fth e exi t base d on : o providin g adequat e acces s fo rrescu e personne l fro m outsid e th e airplan e o rescu e personne l procedure s o maintainin g al l o

f th e othe raspect s o

f Limitatio n 16
. Th e exi t maintain s th e physica l structura l cutou t o fa Typ e I exi t a s wel l as th e functio n o

f bein g openabl e fro m th e outsid e allowin g entr yint o th e airplane
. I f th e slid e has not bee n deployed , the n th e rescu e personne l ca n mov e th e slid e pac k

af t Pag e 7 o f 1 0Enclosur e t o BDCO-10-0304 1

b yfollowin g th e instructiona l placard s adde d t o th e outboar d of th e slid e pack , thu s providin g a n entryway . I n th e nos e dow n advers e attitudes , th e 747-8 F slid e doe s no t hav e a deten t o n th e trac k fo ri t t o loc k

i n th e ful l ope n position
. Th e forc e t o mov e th e slid e i s les s tha n 3 0 pound s whic h i s withi n th e capabilit yof rescu e personnel
. Safet yi s maintaine d becaus e th e requirement s o f Limitatio n 1 6 provid e a n increas e i n safet ya s compare d t o th e 747-400 F b yincludin g instruction s fo rrescu e personne l i n th e typ e desig n (vi a placarding ) i n additio n t o includin g instruction s i n th e rescu e an d fir e fightin g procedures
. F
. Propose d Revisio n t o Limitatio n 1 6 Reques t t o Revis e Limitatio n 16 : Boein g hereb yrequest s th e FAArevis e Limitatio n 1 6 t o remov e th e "clea ropening " requirement
. Boein g propose d wordin g

- "Fo rairplane s wit h th e optiona l escap e slid e installe d a t th e cre wdoo rBoein g mus t develo p instruction s fo rmovin g th e escap e slid e af t t o provid e a n entrvwa vsufficien t t o allo wacces s int o th e airplan e fo rth e purpose s o f rescuin g occupant s fro m th e outside
. Thes e instruction s mus t b e adde d t o th e outboar d sid e o fth e escap e slid e assembl ys o tha t rescu e personne l ca n rea d th e instruction s an d mov e th e escap e slid e ou t o fth e way . Thes e instruction s mus t b e demonstrate d t o b e effectiv e fo r rescu e personnel. " G

. Statemen t o f Publi cInteres t Th e publi cinteres t wil l b e advance d b yth e gran t of Exemptio n a s i t i s i n th e bes t economi cinteres t o f th e Unite d States

. Increase d sale s of airplane s contribut e t o th e balance-of-trade , th e gros s domesti cproduc t an d economi chealt h ofth e Unite d States

. Marketabilit yof th e 747-8 F i s improved , leadin g t o increase d sales , b y keepin g th e sale s pric e an d operatin g cos t o f th e 747-8 F dow n whil e providin g flexibilit yt o th e airline s i n a choic e of evacuatio n means . Purchas e price s coul d increas e du e t o extensiv e desig n change s associate d wit h providin g full ycomplian t design s fo rbot h evacuatio n mean s whic h woul d b e necessaryt o allo wth e operationa l flexibilit yi n evacuatio n means . Desig n change s likel yt o b e necessaryinclude : o Ne wescap e slid e o Revision s t o provid e fo ra floo rleve l exi t fo roperator s wh o selec t onl yth e inerti a reel s o Mean s t o vie wth e evacue e ground contac t are a fo rbot h th e inerti a ree l an d escap e slid e o Change s t o th e doo rstructur e and/o rdoo rmechanism s o Interio rconfiguratio n change s t o allo wth e escap e slid e t o b e move d furthe r af t t o full yclea rth e projecte d openin g of th e exi t Operatin g cost s ar e kep t dow n by : Pag e 8 o f 1 0Enclosur e t o BDCO-10-0304 1



### o Havin g commo n trainin g an d operatin g procedure s wit h th e 74 7 Freighte r Fleet whe n th e escap e slid e i s installe d whil e avoidin g th e cost o fmaintainin g differen t materia l i n th e training , maintenance , dispatc h an d operation s manual s fo rth e 747-8 F an d 747-400F
. Ever y747-400 F delivere d fro m Boein g was equippe d wit h a n escap e slid e installe d i n a simila rinterio r configuration , a windowi n th e crewdoor , an d a n exterio rbody-mounte d ligh t t o illuminat e th e evacue e groun d contac t are a o fth e escap e slide
. Th e majorit y(4 o f 6) o f th e airlin e customer

s that hav

e purchase d th e 747-8 F als o operat e fleet s o

f earlie rmode l 74 7 Freighter s an d wil l hav

e th e escap e slide s installe d o n thei r747-8F , sam e as th e 747-400F
. o Commo n trainin g an d operatin g procedure s t o othe rfreighte rmodel s fo r thos e airline s selectin g onl yth e inerti a reel s as th e evacuatio n means . o Havin g commo n escap e slid e spare s wit h existin g 74 7 Freighte rfleets
. o Avoidin g th e weigh t an d fue l penalt yan d syste m maintenance cost s includin g an yeconomi cpenaltie s associate d wit h fligh t delays that woul d othenwise be realize d b yth e require d desig n change s as note d above i n th e purchas e price impacts
. o Weigh t an d fue l benefit s fo roperators choosin g th e inerti a reel s as th e evacuatio n mean s Lowe rpurchas e an d operatin g cost wil l hel p maintai n carg o shippin g rate s aboard Freighte rairplane s a

t thei rcurren t levels , whic h benefi t th e U S econom yas a whole
. Gran t o f Exemptio n a s requeste d i n thi s petitio n i s i n th e best interest o fth e travellin g publi cthroug h introductio n o fthi s ne wproduc t int o th e marketplace that has advance d th e certificatio n basi s i n man yarea s a s compare d t o th e 747-400F
. Enablin g commo n operatin g procedure s fo revacuatio n not onl ymaintain s purchas e price an d operatin g cost as note d above , bu t avoid s th e potentia l fo rhuma n erro r whic h ma ybe introduce d whe n procedure s var yfo rsimila rproducts
. Fo rth e reason s note d above , i t i s th e petitioner' s opinio n that th e overal l leve l o fsafet yi s improve d b

ycompariso n t o th e previou s 74 7 Freighte rmodel s that ar e certifie d wit h simila rconfiguration s an d evacuatio n system s an d safet yi s maintaine d whic h i s i n th e public' s best interest
. H
. Reques t fo rWaive ro f Publicatio n Th e petitione rrequests that thi s petitio n fo rexemptio n not b e delaye d b yth e publi c process , whic h include s publicatio n o fth e subjec

t petition , du e t o th e fac

t that thi s exemptio n wil l not se t a precedent
. Boein g believe s goo d caus e exist s t o waive th e publicatio n an d commen t requirement s o f 11.85 , 11.87 , an d 11.89
. Relief fro m 1 4 CF R 25.783(g ) has bee n provide d o n othe rfreighte raircraf t includin g 75 7 Exemptio n No
. 4808
. Relief fro m 1 4 CF R 25.807(a)(1 ) Amendmen t 6 7 an d 1 4 CF R 25.813(a ) Amendmen t 4 6 whil e not previousl yexplicitl ygrante d i n previou s exemption s has bee n implie d an d i s relate d t o th e reliefsough t fo r1 4 CF R 25.783(g)
. Relief fro m 1 4 CF R 25.809(a ) Amendmen t 11 6 has bee n provide d o n othe rfreighte raircraf

t includin g 767-30 0 BC F Exemptio n No
. 9696
. Additionally , thi s chang e i s les s prescriptive i n its metho d o fachievin g th e intende d goa l o f Pag e 9 o f 1 0Enclosur e to BDCO-10-0304 1

Limitatio n 1 6 ye t th e ful l capabilit yintende d b yLimitatio n 1 6 i s stil l provided
. Thi s reques t t o revis e Limitatio n 1 6 i s no t unprecedented
. Th e FA Aha s grante d a revisio n t o Exemptio n No
. 979 3 t o allo wfo rinstallatio n ofth e cre wslid e becaus e a correspondin g leve l of safet yi s provided
. Similarly , th e sam e leve l of safet yi s provide d b yth e revise d Limitation , i n tha t th e desig n allows acces s t o th e occupiabl e area s fro m outsid e th e airplane
. Th e 747-8 F petitio n i s bein g provide d i n a timel ymanner ; however , du e t o th e schedule d deliveryo f th e firs t 747-8 F bein g nea rth e en d of th e yea r2010 , fo rth e firs t custome rwit h th e escap e slid e chose n option , a dela yi n processin g of th e Exemptio n coul d dela yth e entryint o service
. I
. Privilege s o f thi s Exemptio n Outsid e th e Unite d State s Pe r1 4 CF R 11.8 1 (h) , Boein g request s tha t th e privilege s of thi s Exemptio n b e extende d outsid e th e Unite d States

. Thi s extensio n ofprivilege s i s necessaryfo r operation s base d withi n foreig n countrie s havin g bilatera l agreement s wit h th e Unite d State s acceptin g FA A1 4 CF R Par

t 2 5 a s thei rainworthines s standard s fo r transport categoryaircraft
. Th e 747-8 F i s intende d fo rth e globa l marke t place
. J
. Conclusio n Th e 747-8 F maintain s th e leve l o f safet ypreviousl yafforde d o n th e 74 7 Freighte r serie s fro m a n exi t ratin g an d evacuatio n system s standpoint
. Th e 3 5 yea rservic e historyofth e 747 F serie s ha s prove n it s safety
. Grantin g relie f fro m 1 4 CF R 25.783(g ) Amendmen t 23 , 1 4 CF R 25.807(a)(1 ) Amendmen t 6 7 an d 1 4 CF R 25.809(a ) Amendmen t 11 6 fo rth e 747-8 F mode l i s justifie d base d o n thi s exi t meetin g th e pertinen t aspect s o fth e Typ e I exi t an d considerin g tha t i t wil l onl yb e use d b ya limite d numbe ro f traine d an d capabl e occupants
. Grantin g relie ffro m 1 4 CF R 25.809(a ) Amendmen t 11 6 fo rth e 747-8 F mode l i s justifie d base d o n th e capabilit yofth e airplan e t o provid e saf e evacuatio n mean s includin g illumination
. Grantin g th e revisio n t o Limitatio n 1 6 i s justifie d base d o n providin g adequat e acces s b yrescu e personne l fro m outsid e th e airplan e an d maintainin g al l ofth e othe raspect s of Limitatio n 16
. I f Limitatio n 1 6 i s revise d th e cre wdoo rwil l maintai n a n effectiv e openin g adequat e fo rrescu e personne l t o ente rfro m outsid e th e airplan e i f necessary .

Pag e 1 0 o f 1 0