tJD/11/ztiit J it:t D aioj/:34it) o SH U rHw t fOjC / 0 4

i f !•• , Exemptio n No . 1007 8 UNITE D STATE S O F AMERIC A DEPARTMEN T O F TRANSPORTATIO N FEDERAL AVIATIO N ADMINISTRATIO N WASHINGTON , D C 2059 1

I n th e matte r

o f th e petitio n o f HAWKE RBEECHCRAF T CORPORATIO N fo r a n exemptio n fro m§ 23.783(f)(1 ) o f Title 14 , Cod e o f Federa l Regulation s Regulator y Docke t No . FAA-2010-021 6

GRAN T O F EXEMPTIO N B y lette r date dFebruar y 16,2010 , Mr . Davi dBemstorf , Vic e Presiden t

Safet y an d Certification , Hawke r

Beechcraf

t Coiporation , 970 9 Central , P.O . Bo x 85 , Wichita , KS , 67201-008 5 petitione dth e Federa l Aviatio n Administratio n (FAA ) o n behal f o f Hawke r Beechcraf t Corporatio n for

a n exemptio n from § 23.783(f)(1 ) o f Titl e 14 , Cod e o f

Federa l Regulation s (1 4 CFR) . Th e propose dexemption , i f granted , woul dallo w th e certificatio n o f th e mode l 390- 2 with amai n doo r widt h les s than tha t

specifie di n 1 4 CF Rpar t 23 . Th e petitione r

request s relie f

fro mth e followin g regulation : Sectio n 23,783(f)(1 ) prescribes , i n pertinen t part , tha t eac h passenge r

entr y doo r

mus t qualif y a s afloo r

leve l emergenc y exi t

an dhav e arectangular

openin g with awidth no t les s than 2 4 inches . Th e petitione r

support s it s reques t

vyit h th e followin g information : "HB C [Hawke r

Beechcraf

t Corporation ] request s a

n exemptio n t o th e requirement s outline dabove for

th e Hawke r

Beechcraf

t model 390-2 . "Th e mode l 390- 2 entry doo r ha s bjisi c dimension s greate r tha n th e minimu mrequire d b y 1 4 CFR§ 23.783(f)(1) , Th e tota l are ao f th e mode l 390- 2 cabi n doo r openin g minu s th e are aoccupie db y localize dprojection s i s greate r than th e minimu mare arequire db y 1 4 CFR§ 23.783(f) ( 1) ; however , th e minimu mwidt h dimensio n canno t

b e me t a t discret e point s du e t o th e protrusions . ACE-10-181- E(Jo/ii/zwiK ) m : H O oiDjz:3mK) o SHL ) rHo t tij/t) H

"HB C wil l conduc t

a n egres s tes t

pe r 1 4 CF R§ 23.803 . Th e egres s tes t wil l demonstrat e th e 390- 2 entrywa y dimension s provid e enoug h ope n are aa s t o allo w saf e exi t o f th e airplane . Servic e histor y ha s bee n reviewe dan dn o issue s hav e bee n show n wit h th e cabi n doo r

evacuatio n du e t o th e protrusion s for th e mode l 39 0 i n an y accidents/incident s wher e egres s wa s demonstrated . "HB C propose s tha t

an exemptio n b e base do n th e mode l 390- 2 entr y door' s basi c dimension s an dope n are ain exces s o f th e minimu mrequire db y 1 4 CF R§ 23.783(f)(1 ) an do n th e successfu l demonstratio n o f egress. " A summary o f

th e petitio n wa s publishe di n th e Federa l Registe r o n Apri l 9 , 201 0 (7 5 FR18256) . N o comment s wer e received . Th e FAA' s analysi s i s a s follows : Th e FA A finds tha t

th e doo r an dniaximu moccupanc y ar e unchange dfromth e earlie r model 39 0 an dservic e histor y indicate s ther e ha s bee n n o issu e with emergenc y evacuatio n for th e maximu meigh t

occupants . Tlierefore , w e fin dtha t thi s exemptio n wil l not

adversel y affec t safet y an dwil l provid e aleve l o f safet y equivalen t

t o th e regulation . Th e FAA' s Decisio n I n consideratio n o f

th e foregoing , 1 findthat agran t o f exemptio n i s i n th e publi c interest . Therefore , pursuan t t o th e authority containe di n 4 9 U.S.C . § § 4011 3 an d44701 , delegate dt o m e b y th e Administrator , Hawke r Beechcraf

t Corporatio n i s grante da n exemptio n from1 4 CF R§ 23.781(f)(1 ) t o th e exten t necessary t o allo w Hawke r Beechcraf

t Corporatio n t o certif

y th e mode l 390- 2 i n th e commute r category , subjec t

t o th e condition s andlimitation s liste dbelow .oo/ii/iUie j it : t o aiDJ2::3qnj D Oq/'tli q



### Condition s an dLimitation s 1 . Passenge

r briefin g card s will b e on boar dt o explain the operatio n of

th e exit . 2 . Occupancy of

th e airplane i s restricte dt

o maximu m2 cre w seat s and6 passenge

r seats . Issue di n Kansa s City , Missour

i o n Jun e ID , 2010 . 

# ij^'y^^ ^ S t*VeT:hotn

p so n Actin g Manager , Smal l Airplan e Directorat e Aircraf t Certificatio n Servic e