01/26/201 0 16:3 9 816329410 6 SA D PAG E 02/0 4

& U.S , Departmen t o f Transportatio n Federa l Aviatio n AdmlnUtratio n Smal l Airplan e Directorate 90 1 Locus t Kansa s City , M O 64106

Mr . Ki mHackctt DO A Administrato r Cessn aAircraf

t Compan y On e Cessn aBoulevar d Wichita , K S 67277-770 4 Dea r Mr . Hackett : W e are enclosin g agran t

o f you r petitio n submitte do n Novembe r 4,2009 , requestin g a

n exemptio n with time-limite dcondition s fromth e requirement s o f 1 4 CF Rpar t

23 , § § 23.1321(b) , 23.1549(a) , (b) , an d(c) . Th e exemptio n allow s Cessn at o typ e certificat e th e Cessn amode l 525 C airplane s withou t oi l pressur e an dtemperatur e indication s specifie di n th e rule . I f

yo u hav e an y questions , pleas e contac t Mr . Pet e Rous e a

t th e above addres s o r cal l hi mo n 816-329-4135 . Sincerely , Q^-Ki mSmit

h Manager , Smal l Airplan e Directorat e Aircraf t Certificatio n Servic e Enclosur e01/26/201 0 16:0 4 816329410 5 SA D PAG E 02/1 1

Exemptio n No . 999 8 UNITE D STATE S O FAMERIC A DEPARTMEN T O FTRANSPORTATIO N FEDERA L AVIATIO N ADMINISTRATIO N WASHINGTON , D C 2059 1

I n th e matte r

o f th e petitio n o f CESSN A AIRCRAF T COMPAN Y fo r a n exemptio n from§ § 23.1321(b) , 23,1549(a),(b),and(c ) o f Title 14 , Cod e o f Federal Regulation s Regulator y Docke t No . 2009-106 4

GRAN T O FEXEMPTIO N B y lette r date dNovembe r

04,2009 , Mr . Ki mHackett , Cessn aAircraf t Company , On e Cessn aBoulevard , P.O . Bo x 7704 , Wichita , Kansa s 67277-770 4 petitione dfor a n exemption with time-limite dcondition s from§ § 23.1321(b) , 23,1549(a) , (b) , an d(c ) o f Titl e 1 4 o f

th e Cod e o f Federal Regulation s (CFR ) t o permi t typ e certificatio n o f

th e Cessn amode l 525 C airplane s withou t

oi l pressur e an dtemperatur e indication s specifie di n th e rule . Th e propose d exemptio n woul dpermi t

relie f fromth e requirement s fo r arrangement , visibility an dcolor s fo r th e engin e oi l temperatur e an dpressur e indication s for th e mode l 525 C airplanes . Th e curren t desig n o f th e engin e oi l temperatur e an dpressur e indication s o f th e mode l 525 C airplane s provide s conflictin g colo r indication s i n certai n operational regimes . Th e propose d exemption , i f

granted , woul dpermi t

typ e certificatio n approval o f th e mode l 5 2 5 C airplane s with thi s non-complian t

typ e desig n fo

r alimite dtime . Th e petitione r

request s relie f

fro mth e followin g regulation[s] : Section s 23.1321(b) , 23.1549(a) , (b) , an d(c) , i n pertinen t part , require s certai n arrangement , visibility an dcolor s fo r th e engin e oi l temperatur e an dpressur e indications . Th e petitione r

support s it s reques t

wit h th e followin g information : Cessn aAircraf

t Compan y request s a

n exemptio n with time-limite dcondition s from th e requirement s o f

1 4 CF R§ 23.1321(b ) an d1 4 CF R§ 23.1549(a) , (b) , an d(c ) for tli e mode ] 525 C t o th e exten t necessar y t o allo w typ e certificatio n o f th e Cessn amode l 525 C airplane s with th e curren t engin e oi l pressure an dtemperatur e displays . A s a conditio n for

grantin g th e requeste dtime-limite dexemption , Cessn aAircraf t wil l desig n an dcertif

y dua l scal e engin e oi l pressur e an dtemperatur e display s that are01/26/201 0 16:0 4 816329410 6 SAD PAG E 03/1 1

complian t with th e curren t

FA A interpretatio n o f

1 4 CF R§ 23.1321(b ) an d1 4 CF R § 23.1549(a) , (b) , an d(c ) withi n 1 5 month s o f th e grantin g o f

thi s exemption . Cessn a Aircraf t wil l provid e aservic e bulleti n t o al l fieldaircraf t afte r certifyin g th e ne w display . Cessn aacknowledge s that thi s petitio n wa s not

submitte di n accordanc e with th e 120

- da y requiremen t

o f 1 4 CF R§ 11.63(d) . Th e reaso n for thi s delaye dreques t

i s tha t th e applicabl e desig n revie w an ddiscussio n that reveale dth e airpleine wa s not i n direc t complianc e with requirement s o f th e rul e wa s not

conducte dunti l lat e i n th e certification , program . Cessn aAircraf t Compan y consequentl y request s tha t th e publicatio n an dcommen t perio drequirement s o f

1 4 CFR§ 11,8 5 b e waived . 1 4 CF RReferenc e 1 4 CF RS 23.1321 : Arrangemen t an dvisibility . (b ) Fo r eac h multiengin e airplane , identica l powerplan t instrument s mus t

b e locate ds o a s t o preven t

confusio n a s t o whic h engin e eac h instrumen t relates . 1 4 CF R$ 23.1549 : Powerplan t an dauxiliary powe r

uni t instruments . Fo r eac h require dpowerplan t an dauxiliary powe r

uni t instrument , a s appropriat e t o th e typ e o f

instruments— (a ) Eac h maximu mand , i f applicable , minimu msaf e operatin g limi t

mus t b e marke d wit h are dradia l o r

are dline ; (b ) Eac h norma l operatin g rang e mus t b e marke dwith agree n ar c o r gree n line , not extendin g beyon dth e maximu man dminimu msaf e limits ; (c ) Eac h takeof

f an dprecautionary rang e mus t b e marke dwith ayello w ar c o r ayello w lin e Backgroun d Th e curren t

installation o f

th e Rockwel l Collin s Prolin e 2 1 syste mo n th e mode l 525 C airplan e consist s o f

asingle scal e display for L H an dR H oi l pressur e an dasingl e scal e display fo

r L H an dR H oi l temperature . Simila r installation s are installe dan d certifie do n othe r

part 2 3 Cessn aaircraf

t includin g th e model s 525 , 525A , an d525 B tha t hav e incorporate dth e Collin s Prolin e 21 . Th e singl e scal e display for th e engin e oi l pressur e an dtempemtur e ha s considerabl e fiel dexperience ; th e model 52 5 Jiirplane , whic h incorporate s th e Proline 2 1 system , ha s ove r 426,00 0 flight

hours , th e model 525 A ha s ove r 517,00 0 flight

hours , an dth e model 525 B ha s ove r

250,00 0 flight

hours . Thi s i s approximatel y 1. 2 millio n flight hour s for thi s typ e o f

display . Ttiere hav e bee n n o report s o f issue s i n th e fieldrelate d t o ho w th e engin e oi l pressure s o r temperature s are displayed .01/26/201 0 16:0 4 816329410 6 SA D PAG E 04/1 1

Curren t Design : Singl e Scal e Oi l Pressur e Display : Th e curren t

mode l 525 C oi l pressur e indicatio n i s displaye do n th e Multifimctio n Display (MFD) , whic h i s centrall y locate do n th e instrumen t panel . Th e visibility an d locatio n o f

th e oi l pressw e display i s simila r t o othe r previousl y certifie dCitatio n aircraft , an dha s bee n evaluate ddurin g flight testin g o f th e mode l 5 2 5C . Th e primary display provide s asingl e analo g scal e fo r botl ath e L H an dR H engines , with apointe r indicatin g th e respectiv e engin e oi l pressure . Thi s i s th e primary indicatio n o f oi l pressur e t o th e crew . Whe n th e "OI L DISPLA Y ENABLE " discret e i s selecte dviath e maintenanc e panel , adigita l readou t i s displaye dfor

eac h engine , belo w th e analo g scale , wit h aresolutio n o f

1 PS I (refe

r t o Figure 1) .



### Norma l Displa

y Oi l Displa yEnable d Figur e 1 : Curren t

Engin e Oi l Display s When , th e "OI LDISPLA Y ENABLE " discrete i s no t selected , th e digit s are no t displaye do n th e MFD , unles s alimi t i s exceeded . Regardles s o f th e "OI LDISPLA Y ENABLE " discret e setting , i f acautio n limi t

i s reached , th e digit s wil l b e displaye d an dth e digit s an dpointe r

wil l b e yellow , an dwill flashfor five seconds . I f

awarnin g limi t i s reached , th e digit s wil l b e displaye dan dth e digit s andpointe r wil l b e re dan d flash fo r five second s (refer

t o Figur e 2) .01/26/201 0 15:0 4 816329410 6 SA D PAG E 05/1 1

Figur e 2 : Oi l Displa y wit h limit s exceede d Th e oi l pressur e analo g scal e ha s arang e o f 0 t o 15 0 PSI . Th e cautio n an dwarnin g oi l pressur e limit s ar e transmitte db y th e Ful l Authority Digita l Electroni c Contro l (FADEC) , an dar e a s follows : Uppe r Warnin g Limit : 13 0 PS I Uppe r Cautio n Limit : 12 0 PS I ( 5 minut e operationa l limit ) Fo r N 2 > 8 0 percent : • Lowe r

Warnin g Limit : 4 0 PS I o I f thi s limi t i s reached , N2 shoul db e reduce dbelo w 8 0 percen t pe r AF M Fo r N2 < 8 0 percen t • Lowe r

Cautio n Limit : 3 0 PS I ( 5 minut e operatiotial limit ) • Lowe r

Warnin g Limit : 2 3 PS I A s discusse dabove , th e scal e limit s for oi l pressur e ar

e dependen t

o n engin e N 2 speed . Th e analo g scal e i s astati c display wit h colo r band s representin g th e limit s fo r N 2 < 8 0 percent , however , th e pointer s an ddigit s reflec t th e limit s fo

r th e curren t

N 2 speed . Pe r

th e model 525 C Aircraf

t Fligh t Manual (AFM) , pilo t

action s are base do n th e pointe r

an ddigi t colo r an dindication , no t

th e colo r o f th e oi l pressur e scale . I f N 2 > 8 0 percent , an dth e lo w limi t i s reached , pe r

AF M procedures , th e cre w i s instructe d t o reduc e N2 t o < 8 0 percent . I n additio n t o th e oi l pressiu- e display , are d"OI L PRESSUR E LO WLrR " Cre w Alert Syste m(CAS ) messag e i s displaye daccompanie db y aMaste r Warnin g an dAural Ton e wheneve r

th e oi l pressur e exceed s th e lo w oi l pressur e limit s a s transmitte db y th e FADEC .01/26/201 0 16:0 4 816329410 6 SA D PAG E 06/1 1

Curren t Design : Singl e Ban dOi l Temperatur e Display : Th e curren t

model 525 C oi l temperatur e indicatio n i s displaye do n th e MFD , whic hi s centrall y locate do n th e instrumen t panel . Th e visibility an dlocatio n o f th e oi l temperatur e display i s similar t o othe r previousl y certifie dCitatio n aircraft , an dha s bee n evaluate ddurin g flight testin g o f

th e mode l 525C . Th e primary display provide s asingl e analo g ban dfor

both th e L H an dR H engines , with apointe r indicatin g th e respectiv e engin e oi l temperature . Thi s i s th e primary indicatio n o f oi l temperatur e t o th e crew . Whe n th e "OI L DISPLA Y ENABLE " discret e i s selecte dviath e maintenanc e panel , adigita l readou t i s displaye dfor

eac h engine , belo w th e analo g band , wit h aresolutio n o f

1 ° C (refer

t o Figur e 1) . Whe n th e "OI LDISPLA Y ENABLE " discret e i s no t selected , th e digit s are no t displaye do n th e MFD , imles s alimi t i s reached . Regardles s o f th e "OI LDISPLA Y ENABLE " discret e setting , i f acautio n limi t

i s reached , th e digit s wil l b e displaye d an dth e digit s an dpointe r wil l b e amber , an dwil l flash for five seconds . I f

awarnin g limi t i s reached , th e digit s wil l b e displaye dan dth e digit s an dpointe r wil l b e re dan d flash for five second s (refer

t o Figur e 2) . Th e oi l temperatur e analo g scal e ha s arang e o f 0 to 16 0 °C , Th e cautio n an dwarnin g oi l temperatur e limit s are define db y th e FADEC , an dar e a s follows : Fo r N2 < 8 0 percent : • Uppe r Warning Limit: 14 9 ° C • Uppe r Cautio n Limit : 13 5 ° C ( 5 minut e operationa l limit ) • Lowe r

Cautio n Limit : 1 0 ° C Fo r N2 > 8 0 percent: Uppe r Warnin g Limit : 13 5 ' C Lowe r Warnin g Limit : 1 0 " C A s discusse dabove , th e scal e limit s fo r oi l temperatiu- e are dependen t o n engin e N 2 speed . Th e analo g ban di s astati c display with colo r band s representin g th e limit s fo r N2 < 8 0 percent; however , th e pointer s an ddigit s reflec t th e FADE C limit s fo

r th e curren t N 2 speed . Pe r

th e mode l 525 C AFM , pilo t action s ar e base do n th e pointe r an ddigi t colo r an dindication , no t

th e colo r o f th e oi l temperatur e band . Fo r oi l temperature s < 1 0 *C , pe r th e AFM , th e cre w i s instructe dt o no t advanc e th e throttle s abov e 8 0 percen t

N 2 imti l th e oi l temperatur e ha s increase dabov e 1 0 °C . Propose dDesign : Dua l Scal e Oi l Displays : Th e propose dmodel 525 C engin e oi l pressur e an dtemperatur e display s wil l includ e a dual scal e indicatio n for

th e engin e oi l pressur e an doi l temperatur e (refer t o Figur e 3) , 501/26/201 0 16:0 4 816329410 6 SA D PAG E 07/1 1

Th e lef t an drigh t scale s wil l b e dynami c an dupdate dbase do n th e engin e N2 spee dat th e limit s a s transmitte db y th e FADE C an ddefine db y th e engin e manufacture . Beside s separat e dynami c scale s fo r LH an dR H engines , th e operatio n o f th e syste m wil l b e th e sam e a s describe dabov e for tli e curren t

system .

Figur e 3 : Propose dDua l Scal e Oi l Displa y

Petitio n Cessn aAircraf

t Compan y request s a

n exemptio n with time-limite dcondition s from th e requirement s o f

1 4 CF R§ 23.1321(b ) an d1 4 CF R§ 23.1549(a) , (b ) an d(c ) for th e mode l 525 C for

tli e engin e oi l pressur e an dtemperatur e display s o n th e mode l 525C , Thi s exemptio n woul dallo w typ e certificatio n o f th e Cessn amode l 525 C airplane s with th e curren t

engin e oi l pressur e an dtemperatur e displays , whil e permittin g adequat e tim e t o desig n an dcertify ' th e propose ddual scal e display i n orde r t o establis h ful

l complianc e wit

h th e lates t

interpretatio n o f

th e requirement s o f

1 4 CFR § 23.1321(b ) an d1 4 CF R§ 23.1549(a) , (b) , and(c) . A s aconditio n for

grantin g th e requeste dexemption , Cessn aAircraf t wil l desig n an d certif y engin e oi l pressure an dtemperatur e display s that are fully comphan t

with th e lates t interpretatio n o f

1 4 CFR§ 23.1321(b ) an d1 4 CF R§ 23.1549(a) , (b) , an d(c ) withi n 1 5 month s o f

th e grantin g o f

thi s exemption . Tli e nex t schedule dversio n o f

th e display softwar

e fromCollin s (v2.0 ) ha s a certificatio n schedul e for

TS O receip t

b y en do f year 2010 . Du e t o curren t

manpowe r constraint s at

Collin s i t i s no t feasibl e t o incorporat e th e ne w oi l display s prio r t o v2. 0 withou t significantl y delayin g v2-0 . Collin s displa y softwar e v2. 0 i s require dfor EAS A certificatio n an dany delay i n EAS A certificatio n coul dresul t i n significan t financial penaltie s for

Cessn aAircraf

t Company , Cessn aAircraf

t wil l provid e aservic e bulleti n t o all mode l 525 C fiel daircraf t after certifyin g th e ne w display .01/26/201 0 16:0 4 816329410 5 SA D PAG E 08/1 1

Ftirther , prio r

t o th e installatio n o f

th e servic e bulleti n t o instal l th e ne w engin e oi l pressur e an dtemperatiu' e displays , Cessn aAircraf t wil l includ e note s i n th e Airplan e Fligh t Manual (AFM ) t o hel p clarif y th e ban dan dpointe r

colors . Th e note s wil l b e remove donc e th e servic e bulleti n i s installed . Tli e essenc e o f th e not e wil l b e t o addres s th e followin g items ; th e specifi c wordin g i s t o b e agree dupo n betwee n Cessn a an dFA A a s part

o f th e AF M approval process . • Th e colo r

band s o n th e vertica l tap e fo r oi l temperatur e an dpressur e are for engin e settin g belo w 8 0 percen t N2 . • Fo r throttle setting s a

t o r abov e 8 0 percen t

N2 th e engin e oi l pressur e indicatio n wil l turn re dbelo w 4 0 ps i indicatin g tha t th e engin e ha s exceede dit s operationa l limit s eve n thoug h th e pointe r i s no t i n th e re d ban do f th e vertica l tape . Ther e i s n o lo w pressur e cautionary (yellow ) ban dfo r N 2 speedg abov e 8 0 percent . • Fo r throttl e setting s at

o r abov e 8 0 percen t

N2 th e engin e oil temperatur e indicatio n wil l turn redabov e 13 5 * C an dbelowl O " C indicatin g tha t

th e engin e ha s exceede dit s operationa l limit s eve n thoug h th e pointe r

i s no t i n th e re dban do f

th e vertica l tape . Ther e i s n o oi l temperatur e cautionar y (yellow ) ban dfor

N 2 speed s abov e 8 0 percent . Petitioner' s Publi c Interes t Statemen t Cessn aAircraf

t Company state s that

grantin g thi s exemptio n woul db e i n th e publi c interes t for th e followin g reasons ; 1 . Th e curren t

engin e oi l pressur e display allow s fo r saf e operatio n o f

th e engin e withi n it s operationa l limit s a s show n b y th e 1.2 millio n flight hour s o f similar display s o n othe r

mode l 52 5 serie s aircraft . Th e curren t display provide s four visual cue s an don e auditory cu e that wil l aler t th e pilot s that

a n engin e oi l pressur e limi t

ha s bee n exceeded . • Th e pointe r

fo r tliat engin e wil l tur n th e appropriat e warnin g color . • Th e digital readou t

fo r that engin e wil l b e displaye di n th e appropriat e color , flashing fo

r five seconds . • Fo r lo w oi l pressur e aCA S messag e "OI LPRESSUR E LO WL-R " wil l b e displayed . • Fo r lo w oi l pressur e th e Maste r Warnin g annunciato r

wil l b e illuminate dwit

h a n associate daural warnin g tone . 2 . Th e curren t

engin e oi l temperatur e display allow s fo r saf e operatio n o f

th e engin e withi n it s operational limit s a s show n by th e 1. 2 millio n flight hour s o f similar display s o n othe r

mode l 52 5 serie s aircraft . Th e curren t display01/26/201 0 15:0 4 816329410 6 SAD PAG E 09/1 1

provide s tw o visua l cue s tha t wil l alert th e pilot s tha t

a n engin e oi l temperatur e limi t ha s bee n exceeded . • Th e pointe r

fo r tl-ia t engin e wil l turn th e appropriat e warnin g color . • Tli e digita l readou t

for that engin e wil l b e displaye di n th e appropriat e color , flashing fo

r five seconds . 3 . Similar

engin e oi l pressur e an dtemperatur e display s are currentl y i n us e o n othe r mode l 52 5 serie s aircraf

t model s with ove r

1. 2 millio n flight

hour s o f fieldservic e experience . Ther e hav e bee n n o report s by th e pilot s o f confiasion i n readin g an dunderstandin g th e engin e oi l pressur e o r temperatur e display s an dn o report s o f

engin e 'damag e cause db y misinterpretin g th e engin e oi l displays . Therefor e fieldexperienc e ha s show n tha t th e cvirren

t engin e oi l display s d o not

caus e ahazar dt o th e aircraft . 4 . Th e denial o f

thi s petitio n for

exemptio n woul dresul t

i n th e delay o f

th e certificatio n o f

mode l 52 5 C airplane s fo r approximatel y 1 5 months . Cessn a woul dexperienc e alos s o f revenu e o f

a t leas t $14 0 millio n i n 201 0 an d$12 0 millio n i n 201 1 du e t o thi s delay . Thi s coul dals o resul t i n numerou s aircraf

t orde r cancellation s increasin g th e fmancial los s significantly . Thi s woul dals o resul t i n th e los s o f

revenu e for

partner s an dsupplier s an dth e potential nee d for workforc e reductions , al l o f whic h woul db e counte r

t o th e publi c interest . Cessna' s customer s hav e mad e utilizatio n plan s base do n th e agree dupo n delivery schedul e o f

thes e airplanes . Dela

y i n th e delivery dat e du e t o th e redesig n an dretrofi t o f th e engin e oi l display s woul dimpos e significan t financial penaltie s upo n ou r customers an dthei r

businesse s withou t

acommensurat e safet

y benefit , whic h i s als o counte r t o th e publi c interest . Notic e an dPubli c Procedur e Provide d A summary ' o f

th e petitio n wa s publishe do n Decembe r 29 , 200 9 (7 4 F R68914) . N o comment s wer e received . Th e FAA' s analysi s i s a s follows : T o obtai n thi s exemption , th e petitione r mus t show , a s require db y 1 4 CF Rpart 11 , § § 11.81(d ) an d11.8 1 (e) : "(1 ) th e reason s wh y grantin g you r reques t woul db e i n th e publi c interest ; tha t

is , ho w i t woul dbenefi t

th e publi c a s awhole , an d(2 ) th e reason s wh y grantin g tt e exemptio n woul dno t

adversel y affec t

safety , o r

ho w th e exemptio n woul dprovid e aleve l o f safet y a t leas t equal t o tha t

provide db y th e rul e fromwhic h yo u see k th e exemption. " Th e FA A ha s carefull y reviewe dth e informatio n containe di n th e petitioner' s reques t fo r exemption , S01/26/201 0 16:0 4 816329410 6 SA D PAG E 10/1 1

Th e FA A agree s wit

h th e petitioner' s reques t

fo r th e followin g reasons : 1 . Th e curren t

engin e oi l pressur e display allow s fo r saf e operatio n o f

th e engin e withi n it s operationa l limit s a s show n b y th e 1. 2 millio n flight hour s o f similar display s o n othe r mode l 52 5 serie s aircraft . The curren t display provide s four

visua l cue s an don e auditory cu e tha t

wil l alert th e pilot s that

a n engin e oi l pressur e limi t ha s bee n exceeded . o Th e pointe r

fo r tha t engin e uil l turn th e appropriat e warnin g color . o Tli e digita l readou t

for that engin e wil l b e displaye din th e appropriat e color , flashing for

five seconds . o Fo r lo w oi l pressur e aCA S messag e "OI L PRESSUR E LO WI^R " wil l b e displayed . o Fo r lo w oi l pressur e th e Maste r Wantin g annunciato r

wil l b e illuminate dwith a n associate daura l warnin g tone . 2 . Th e curren t

engin e oi l temperatui- e display allow s fo r saf e operatio n o f

th e engin e withi n it s operationa l limit s a s show n b y th e 1.2 millio n flight hour s o f similar display s o n otiier

mode l 52 5 serie s aircraft . Th e curren t display provide s tw o visua l cue s tha t wil l alert th e pilot s that

a n engin e oi l temperatur e limi t ha s bee n exceeded . o Th e pointe r

fo r tha t engin e wil l tur

n th e appropriat e warnin g color . o Th e digita l readou t

fo r tha t engin e wil l b e displaye di n th e appropriat e color , flashing fo

r five seconds . 3 . Simila

r engin e oi l pressur e an dtemperatur e display s are currentl y i n us e o n othe r model 52 5 serie s aircraf

t model s with ove r

1.2 millio n flight

hour s o f fiel dservic e experience. Tliere hav e bee n n o report s b y th e pilot s o f confusio n i n reading an d understandin g th e engin e oi l pressur e o r temperatur e display s an dn o report s o f engin e damag e cause db y misinterpretin g th e engin e oi l displays. Therefor e fieldexperienc e ha5 show n that

th e curren t

engin e oi l display s d o no t caus e ahazar dt o th e aircraft . 4 . Th e denia l o f

thi s petitio n for

exemptio n woul dresul t

i n th e delay o f

th e certificatio n o f mode l 525 C airplane s for approximatel y 1 5 months . Th e economi c impac t t o Cessn aAircraf

t Corporatio n woul db e sever e an dresul t i n significan t

reduction s i n Cessna' s workforce . Additionally , th e economi c impac t t o Cessna' s supplier s an d customer s woul dals o b e significant . Th e FAA' s Decisio n I n consideratio n o f

th e foregoing , I findtha t agran t o f exemptio n i s i n th e publi c interest . Therefore , pursuan t

t o th e autiiority containe di n 4 9 U.S.C . § § 4011 3 an d44701 , delegate dt o m e b y th e Administrator , Cessn aAircraf t Compan y i s grante da

n exemptio n with time-limite d condition s from§ § 23.1321(b) , 23.1549(a) , (b) , and(c ) t o th e exten t necessary t o allo w typ e01/26/201 0 16:0 4 816329410 6 SA D PAG E 11/1 1

certificatio n o f

th e Cessn amode l 525 C airplane s with engin e oi l temperatur e an dpressur e indication s not

i n complianc e with th e requirement s o f § § 23.1321(b) , 23.1549(a) , (b) , an d(c ) a s the y relat e t o th e arrangement , visibility an dcolors . Fo r th e mode l 525 C airplanes , thi s exemptio n i s subjec t

t o th e followin g condition s an dlimitations : Condition s an dLimitation s 1 . Cessn aAircraf

t Compan y mus t

certif y an dincorporat e int o th e productio n lin e requirement s engin e oi l temperatur e an dpressur e indication s fully complian t with th e requirement s o f

§ § 23.1321(b) , 23.1549(a) , (b) , an d(c) , int o th e mode l 525 C airplane s n o late r

tha n Apri l 30 , 201,1 . 2 . Cessn aAircraf

t Compan y miuj t

retrofi t th e mode l 525 C airplane s delivere dtmde r th e terra s o f

th e exemptio n with th e ne w engin e oi l temperatur e an dpressur e indication s describe di n Conditio n 1 abov e n o later than Apri l 30,2012 . 3 . Unti l th e incorporatio n o f th e change s require di n th e above Condition s 1 an d2 o f thi s exemptio n hav e bee n completed , Cessn aAircraf t Compan y ad dt o th e airplan e flight manua l (AFM ) adescriptio n o f th e indication s an dthei r

conflictin g colo r guidance , an dth e necessary instruction s for properl y interpretin g th e oi l pressur e an dtemperatur e indications . 4 . Fo r airplane s subjec t

t o Conditio n 2 o f

thi s exemption , th e operatin g limitation s sectio n o f th e airplan e flight

manua l (AFM ) mus t

includ e tli e followin g statement : "N o perso n ma y operat e thi s airplan e afte r Apri l 30 , 2012 , unles s th e oi l pressur e an dtemperatur e indication s hav e bee n modifie di n accordanc e with th e term s o f

Exemptio n No . 9998. " Thi s statemen t

ma y b e remove dfromth e AF M afte r th e require dmodificatio n ha s bee n made . Thi s exemptio n terminate s o n Apri l 30,2 0 H , unles s soone r supersede do r

rescinded . Issue di n Kansa s City , Missouri o n January 26,2010 .

Joh n Colomy Actin g Manager , Smal l Airplan e Directorat e Aircraf t Certificatio n Servic e



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