Rushmor e Helicopte rFA A201 0 - 002 3 Agenc yExhibit s

# Descriptio n I D I N 1 Phot o o f re d Bel l Hel o - starboar d sid e -.••'\n-wr | I Tn^ ^ ^

^ 2 Phot o o f re d Bel l Hel o - starboar d sid e closeu p |'•" : V^^A^'^QTAT1^)^ ! ^ ^ 3 Rushmor e Hel o dt d 8/6/0 9 - 68W , A H - r^^ ' s-R'oppQiTir):^ ^

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xx 5 StaTSD O 2009083 1 - Leffert- 2 p p --,5 1 pr i „ c ; p 2 : U- l ^ ' ^ 6 FA AComplianc e an d Enforcemen t dt d 2007100 1 - 4 p p / xx 7 Emai l 2011041 9 - dt d 2011041 9 - 2 p p ' ' xx 8 ' ; 9 1 0 1 1 1 2 1 3 1 4 1 5 1 6 1 7 1 8 1 9 2 0 2 1 2 2 2 3 2 4 2 5 2 6 2 7 2 8 2 9

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2 A^' ^ <r\\dHZ l Rushmore HeHcopters , Inc . FAA Docke t

No . CP10GL000 2

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EXHIBI T 

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## RUSHMOR " HELICOPTER S Begi n Tim e En d Tim e Begi n Tac h En d Tac h Tota l Tac h 

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OfGce 90 9 St . Josep hSt . Suite 70 0 Rapi dCity , Sout

hDakot a5770 1 Sirs : Augus t 31 , 200 9 G L

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## i ' ^ 113 . il 4 116 . !i 6 i 

### (On Augus t

7 , 2009 , acomplain t

wa s filedwithFA

A regardin g amissin g fue l ca p o nthe ^ iBeli 20 6 B , N2268 Wtha t I wa s flying. I di di

nfac t loos e th e fuel cap o nth e afternoo nof ; ^Augiist 6 , 2009 . Afte

r discpyerin g th e cap niissing , I shu t dow nth e aircraf

t an dsearchedl for th e missin g cap , bu t

it w ^ n o wher e t o b e found . I the ncontacte dMik e Jacobs, ' (owner o f Blac k Hill s Aerial Adventures , t o notif y himthat

th e fUe l cap wa s missin g and ' (ask hi s opinio n o f

wha t I shoul dcfo . Fj e suggeste dtha t I tr y t o fm

daspar e fue

l cap i nthe) ihange r adjacent t o th e Keyston e heliport . Th e previou s owner/operato r o f th e Keystone i ^operation^ore s hi s Be

H 4 7 i n th e hangei^an dhas.some spar e helicppte r parts . ] foun d severa l fuel caps , but

non e o f the mfi t th e 206 . I agai ncalle dMik e Jacobs , bu t h e wasl _ ('no t available , so^

I tap ^ oyer

th e openin g an dflew th e aircn ^ frpni Keystone , S D bac k t ^ (ou r prim ^ h^port , locate dnea r Craz y Horse , abou t

T O ai r mile s away ^ AJfte

r I landed, ' 'Mik e tol dm e diat

anotfie r fiiel cap wa s o norde r

an dwoul db e arrivin g b y expres s mail , f (di dno t fly th e aircr ^ an

y more tha t

day . Blac k Hill s Aerial Adventure s doe s no t hav e afull-time certifie dmechani c o nstaff . Al l require dmaintenanc e i s contracted . A s such , no certifie dmechani c wa s availabl e t o determin e th e necessity o f havin g afue

l cap i nplac e fo r airworth y flight . However , an informal consultatio n wit

hBel ! Helicopte r

representative s deeme dthat th e fue l cap i s no t a n integral airworth y componen t o f th e aircraft , rather

i t i s use dt o preven t

debri s fro m enterin g th e fue

l cel l an dreduc e th e potential fo r afue l spil l inth e even t

o f adynami c rollove r o r crash . Thoug hno t

recommended , flyin g withou t afue l cap di dno t necessaril y deemth e aircraf t t o b e unairworthy . Basedo nthat information , o nAugus t

7 , I flew th e aircraf

t on several flights unti l confronte db y tw o FAA representatives . The y state dthat flying th e aircraf

t withou t afuel ca p constitute danairworthynes s violatio nan d I wa s no t t o fly th e aircraf

t withou t afue l cap . Afte

r the FA A official s lef

t th e site , I borrowe dafue

l ca p fromou r

othe r 20 6 (whic hremainedo nth e groun dunti l th e fuel cap wa s replaced ) andflew th e aircraf t bac k t o ou r Crazy Hors e heliport . Th e fue l cap wa s the n replacedon th e other 206 . I di dno t

fly th e aircraf

t an y mor e that

day . A replacement

fue l cap arrive dth e nex t

day . Backgroun d I provid e this information , no t t o justif y o r legitimiz e m

y actions , bu t

t o tr y t o provid e a perspectiv e on why andho w th e origina l complain t from aperso no r

person s unknow n wa s initiated . Helicopter

tour s hav e bee nongoin g i nKeystone , S D for

decades . Severa l year s ago , th e original owne r o f th e Keyston e operatio nterminate doperations . Th e original facilitie s (ticke t

office , refuelin g points , loading/unloadin g pads , hanger , etc. ) remainedon-site . Durin g th e lull , n o helicopter s flew i no r ou t o f th e site excep t

periodi c flights b y th e original owne r i n hi s Bel l 47 , whic hhe keep s i nth e on-sit e hanger . Durin g this lull , some loca

l busines s owner s an dpubli c apparentl y assume dtha t operation s a t

th e 

## FO ROFFICIA LUS EONL Y ^^1^^"^ ^ Publi c availability to b e determine dunde r ^J^ ^ 5U.S.C . Section55 2 Agenc y Exhibi t 5 , pag e 1/ 2 Rushmor e H e l i co p tiers , In c FA A DOCKE

T NO . r:pinoLnon 2

### heliport wer e permanentl y terminated . In2008 , Mike Jacobs , owner o f Blac k Hill s Aeria l Adventures , lease dth e heliport fromth e original owner , andreinitiate dtou r operation s fromth e site . Some local s objecte dan dMik e Jacob s went

ou t o f hi s wa y t o addres s an drectif

y loca l concerns . H e adjuste dflight pattern s inan dou t

o f th e heliport , trie dt o minimiz e nois e b

y repositionin g helicopter s o nth e pads , no t

usin g th e "jet " helicopter s unles s needed , andeve n agree dt o terminate operation s a t aspecifi c tim e in th e evening . However , this wa s apparentl y no t goo denoug hfor

asmall , bu t

voca l grou p o f people , wh o m

Wapparentl y settl e for

nothin g les s thancomplet e shut-dow no f th e operation . The y hav e state dpublicl y that the y wil l do anythin g andeverythin g the y can t o ensur e shut-dow n occurs . Thi s smal l grou p ha s objecte dt o th e Keyston e cit y council , contacte dcounty commissioner s an dstate legislators , an dha s complaine dt o an d corresponde dwithloca

l andWashingto nD C FAA office s demandin g th e operatio nb e terminated . O n Augus t

7, 1 wa s caugh t

inth e crossfire a s a"targe t o f opportunity " i nthi s vindictiv e vendetta . A s stated , thi s group' s sol e agend ai s t o terminat e helicopte r tou r operations , regardles s o f

any collatera l consequences . Mike Jacob s i s runnin g alegitimate , safe , tou r operation . Inspection s b y FAA official s hav e foun dn o substantial safet y o r aircraf t airworthynes s violations . Thi s singl e ac t o f flying withou t

afue l cap , thoug hno t

a nintentional violatio no f

FAA rule s an d regulations , fall s squarel y upon mysel f a s PIC . Wit

hth e benefi t

o f 20/2 0 hindsight , I woul dno t d o it again . Robert LLeffer t / 1427 Fetterman Driv e Colorad o Springs , C O 8091 5



## FOROFHCIALUS EONL Y Publi c availability t o b e determine dunder

5 U.S.C . Section55 2 Agenc yExhibi t 5 , pag e 2/ 2

Rushmor e Helicopters , In c FA ADOCKE T NO . CP10GL000 2

## U.S . DEPARTMEN T O F TRANSPORTATIO N FEDERA L AVIATIO N ADMINISTRATIO N

Nationa l Policy 

## ORDE R 2150.3 B Effectiv e Date : 10/01/0 7 SUBJ : FA AComplianc e an d Enforcemen t Progra m Thi s orde r

coninin s policies , pioccdurcs , an dguideline s lo r lli c Federa l Avialio n Administraiion' s complianc e an dcnforcenien l program . Th e orde r als o arliculaie s th e FAA' s philosoph y To r usin g variou s rcnicclics . includin g education , corrcciiv c aelioii , i n forma l action , remedia l training , administrativ e action , an dlegal enforcemen t action , t o addres s noncomplianc e wit hstatutoi y an d regulator y requirement s enforce dby th e FAA . I t provide s fo

r th e publi c awritte n statemen t o f th e Administrator' s polic y guidanc e fo r imposin g sanction s fo

r violation s o f

suc hrequirements . Th e orde r

i s use da

t al l level s b y agenc y personne l wh o ar e engage di n th e invesiigaiion . reporting , an dprocessin g o f

cnlbreemen t

actions . I

t applie s t o all office s wit

hregulator y responsibilities . Thi s revisio n o f

th e orde r comprehensivel y update s policies , procedures , guidance , an dassignment s o f responsibility . I

t reorganize s th e orde r

i n amanne r

mor e usefu l fo

r agenc y personne l an di s availabl e electronicall y t o agenc y personne l an dth e public . Th e revisio n amend s agenc y sanctio n guidanc e t o confon n t

o statutor y change s resultin g fro mVisio n lOOCcntur

y o f Aviatio n Reauthorizatio n Ac t an d incorporate s guidanc e int o ih c agency' s complianc e an denforcemen t progra morde r

on policie s an d program s tha

t hav e tlevelope dsinc e th e las t comprehensiv e orde r

revisio n i

n I9SX . Thos e includ e policie s relatin g t o th e FAA' s exercis e o f it s aulhoril y t

o administrativel y asses s civi l penaltie s an d guidanc e o n th e agency' s voluntar y safety programs . A workgrou p o f

agenc y personne l fro

mth e Hel

dan dheadquarter s wit hextensiv e experienc e i n statutor y an dregulator y enforcemen t reviewe dth e agency' s policie s an dprogram s i n thi s are at o produc e thi s comprehensiv e revisio n o f th e agenc y orde r

o n it s complianc e an denforcemen t program .

Rober t A . Stur g Actin g Admi n

Distribution : A-\V-I;A-\V (AT/PS/SM)-2;A-\ V (PP/AiM/SF / GCIFS/1A/VS)-3;A-.XY 2 ( A T/AF/CS)-2:Z- X (AS/AM/GC/FS)-3 : A- V (AM/AR1GC)~3;A- Z(AiVI/AN/GC)-3;A-FAC/FACIFCS-0 ; A- FAF/F A T/FIA-0{ LTD);ZFS-32 5 Initiate dBy : AGC-30 0 

### Agenc yExhibi t 6 , pag e 1/ 4 Rushmor e Helicopters , In c FA ADOCKE T NO . CP10GL000 210/01/0 7 2150.3 8 Appendi x B Tabl e o f Sanction s .Al l Enforcemen t

Program s Fxcep t Hazardou s Material s Par t On e - Abhroviati(m s an dDefinition s 1 . Applicability , 'fhi s tabl e o f sanction s applie s t o violation s tha i occune do n o r afte r Octobe r 1 , 2007 . Fo r

violation s occuirin g befor e Octobe r I . 2007 , FA. A enforcemen t personne l appl y th e sanctio n guidanc e principle s i n FA A Orde r

2150.3 A usin g u p t o th e statutor y maximu msanctio n amoun t i n effec t a t th e tim e o f

th e violation . 2 . Abbreviations . Th e followin g abbreviation s ar e use di n thi s Tabic : API S mean s approve dproductio n inspectio n syste m A/I V mean s airworthines s .'J/yCmcan s airworthines s ccrtiricai c BT S mean s Unde r

Secretaf> ' for

Borde r an dTransportatio n Securit y // / mean s inspectio n authorizatio n L Emean s law enfotcemen t P C mean s productio n certificat e S7' C mean s supplementa l typ e certificat e T C mean s typ e certificat e TFRmean s Temporai- y Fligh t Restrictio n TS A mean s Transportatio n Securit y Administratio n 3 . Definitions : a . A cuniiiniin g violatio n arise s whe n aspecifi c violatio n occur s ove r mor e tha n on e da y o r ove r mor e tha n on e llight . I t als o ma y involv e aviolatio n tha t i s ongoing , /(j r

example , an ongoin g refusa l t o provid e reciuire drecord s t o th e FA A for inspection . Pimitiv e sanction s ar e appropriat e for

continuin g violation s tha t ar e no t currentl y ongoing . Sanctio n guidanc e for thes e violation s i s se t

fort hi n paragraph s 6 an d7 {nuillipl e aci s o r miiliipl e violaiions ) o f chapte r 7 . A combinatio n o f

punitiv e an dremedia l sanction s i s appropriat e whe n continuin g violation s ar e ongoing . b . Violatio n committe db y asmal l hu.si/ies s concern . Sectio n 50 3 o f Visio n 1 UO---Century o f Aviatio n Reauthorizatio n Ac t (CARA ) amende d4 9 U.S.C . ^ 4630 1 t o chang e th e civi l penalt y amount s th e FA A ma y see k for violation s tha t

occu r o n o r afte r Decembe r

12 . 2003 ; th e la w set s differen t

limit s o n th e civi l penaltie s th e FA A ma y see k for violation s b y .smal l hiisine.\ s concerns , a s oppO-sedt o violation s b y othe r entities . Visio n 10 0 CAR A give s smal l busines s concer n th e sam e meanin g a s i n th e Smal l Busines s Ac t {1 5 U.S.C . § 632) . Sectio n 63 2 dellne s smal l bifsines s concer n a s an enterj^ris e ''whic hi s independentl y owne dan d operate dan dwhic hi s no t dominan t

i n it s Hel do f

operation. " Th e Smal l Busines s Administratio n regulation s implemen t th e Smal l Busines s Ac t an ddefin e busines s concer n a s 

### Agenc yExhibi t 6 , pag e 2/ 4 Rushmor e Helicopters , In c ^"' ' FA

ADOCKE T NO . CP10GL000 210/01/0 7 2150.3 B

Smal l Busines s Concer n (fo rviolation s covere d unde r4 9 U.S.C . § 4630l(a)(!)(A ) o r(B ) bu t no t unde r4 9 U.S.C . i

^ 46301(a)(5)(A)) : Maximu m $750-$l.l0 0 Moderat e $450-574 9 Minimu m $25 0 $44 9 (5 ) VIOLATIO N COMMITTE D B YAIRPOR TOPI^RATOR . Larg e Busines s Concern : Maximu m $18,750-$25,00 0 Moderat e $10,000- $ 18,74 9 Minimu m $2,000-59,99 9 Smal l Busines s Concer n (fo rviolation s covere d unde r4 9 U.S.C . i j 46301(a)(5)(A)) :

Maximu m $8,250- $ 1 1,00 0 Moderat e $4,400-58.24 9 Minimu m $1,10()-S4J9 9 Smal l Busines s Concer n (fo rviolation s covere d unde r4 9 U.S.C . § 46301(a)(1)(A ) o r(B ) bu t no t unde r4 9 U.S.C . ; < 46301(a)(5)(A)) : Maximu m $850- $ 1,10 0 Moderat e $650-584 9 Minimu m $50 0 $64 9 (6 ) LARG F BUSINI^S S CONCER N - DOE S NO THOL D CERTIFICAT E

Maximu m $18.750-$25,00 0 Moderat e S I 0,000- $ 18,74 9 Minimu m $2,000-59,99 9 (7 ) S.MAL L BUSINES S CONCER N - DOE S NO THOL D CERTIFICAT E

Fo rviolation s covere d unde r4 9 U.S.C . § 46301(a)(5)(A) : Ma.ximu m $4,400- $ I LOO O 

### Moderate $2,200-54,39 9 Agenc y Exhibi t 6 , pag e 3/ 4 Minimum$550-52,19 9 Rushmor e Helicopters , In c FA ADOCKE T NO . CP10GL000 2 

### B- 6

### 10/01/0 7 2150.3 B

IM^ . B-2-e . Othe rprovision s applicabl e l o individua l certillcal cholder s cont . (b ) Lac k

o f typ e ratin g (c ) Misse d proHcienc ychec k o rlin e chec k (d ) Lac k

o f curren t experienc e (e ) Failur e l o hav e curren t airma n o rmedica l certificat e i n possessio n (t" ) Lac k

o f initia l o rrecurren t trainin g (g ) Operatio n wit h know n disqunlitvin g disabilil v (i ) Operatin g wiihon i vali d medica l certificat e whe n no t medicall yqualille d o rapplicatio n fo rmedica l ccrtillcat e deferre d Civi l Penalt y

Minimu m t o Moderat e Certificat e Actio n 1 so-da y Suspensio n t o Revocatio n 30 - t o yO-da y Suspensio n 30 - t o 90-da y Suspensio n 30 - t o 90-da y Suspensio n Revocatio n Revocatio n

Fig . B-2-r . Othe rAi rCarrie rPersonne l (1 ) Failur e t o kee p manua l curren t Civi l Penalt y Minimu m Certificat e Actio n 30 - t o 90-da y Suspensio n ] 3 . INDIVIDUAL S AM ) GKNKRA LAVIATIO N - OWNKRS . PILOTS , REPAI RSTATIONS , PILO T .SCHOOLS , MAINTKNANC FPLRSONNKL . Fig . li-3-a . Owner s an d Operator s Othe rTha n Require d Ciewinember s (! ) Failur e t o compi vwit h airworthines s directiv e (2 ) I'aihir cl o pcrfon n o rimprope rperfonnanc e o f maintenance , inchidini z require d maintenanc e (3 ) Failur e t o mak e prope rentr yi n aircraf t io n (4 ) Operatio n o 1 aircraf t beyon d annual . 100-houi . o r progressiv e inspectio n (5 ) Operatio n o f unaiiworili yaircraf i (6 ) Inteniionall yfals e o rtVaudulen i entry , reproduction , o r alteratio n i n an yrecor d o rrepor t Civi l Penalt y Moderat e l o Maximu m Moderat e t o Maximu m Minimu m t o Moderat e Miniinim i t o Moderat e Motlerat e t o Maximu m Maximu m Certil'ieat c .Actio n

Revocatio n Fi;: . H-3-b . Repai rStation. s (1 ) Failur e t o provid e require d facilitie s mamtenanee , repair , o rinspectio n fo rprope rservicing , Civi l Penalt y Moderat e t o Maximu m Certificat e Actio n Indefinit e Suspensio n unti l complianc e t o Revocatio n



### B-2 0 Agenc yExhibi t 6 , pag e 4/ 4

Rushmor e Helicopters , In c FA ADOCKE T NO . CP10GL000 2Re : Attn : Ton yDicf<ei^o n <PS E Reques t no : 2011040775- 1 > pseligh t to : Gar yF Kwasniewsk i Cc : "Gunderson , Pau l (CSR) " Pleas e respon d t o "pselight " 04/19/201 1 10:0 5 A M

Hell o Gary , I n regard s t o you rquer yconcernin g airworthines s an d safel yissue s whe n conductin g fligh t operation s o f a Bel l mode l 206 B wit h fue l fille rpor t covere d wit h duc t top e i n lie u o f o n approve d fue l cap , w e offe rth e following : Th e fue l fille rco p assembl yis a n essentia l (a s oppose d t o optional ) componen t linke d t o th e Bel l Helicopte rmode l 20 6 engineerin g to p drawing . Bel l Helicopte rbelieve s tha t i f fligh t operation s or e performe d whe n th e Helicopter s doe s no t hov e o n approve d fue l fille rco p installed , th e safet yo f th e helicopte ran d i t occupant s i

s compromise d an d w e conside rth e Helicopte ris a n a n unair/zorth y condition .

I f w e ca n provid e an yadditiona l information , pleas e advise , Anthon yC . Dickerso n Produc t Suppor

t Engineerin g Canada : 800.361.930 5 U.S . only : 800.363.802 3 Tel : 450.971.640 7 Fax : 450.433.027 2 pseliqht@bellhelicot3ter.iextron.co m NOTICE : Thi s E-mai l (includin g attnchnients ) i s covere d b ybot h Canadia n an d U.S . law , includin g bu t no t limite d t o th e Electroni cCommunication s Privac yAct . 1 8 U.S.C . § § 2510-2521 , i s confidential , mayconiai n proprietar y infomiation , an d mayb e legall yprivileged . I f yo u are no t th e intende d recipient , yo u are hereb ynotifie d tha t an y retention , dissemination , distribution , o rcopyin g o f thi s communicatio n i s strictl yprohibited . Pleas e repl yt o th e sende rtha t yo u hav e receive d th e messag e i n error , an d the n delet e it . Than k you . -Origina l Message From : Sent : To : Cc : Subject : Gary.F.Kwasniewski@faa.go v

MONDA Y, APRI L 18 , 201 1 12:4 0 P M pseligh t Attn : Ton yDickerso n 

### Agenc yExhibi t 1 , pag e 1/ 2 Rushmor e Helicopters , In c FA ADOCKE T NO . CP10GLQ00 2

### Tony :

A s pe rou rearlie rphon e conversation , I woul d lik e t o kno wth e positio n Bel l Helicopte rha s concernin g th e airworthines s an d safet yIssue s o f operatin g a Bel l Mode l 206 B wit h th e fue l por t covere d wit h "duc t tape " instea d o f It

s standar d fue l cap . Than k yo u wit h you rassistanc e I n thi s matter . Gar yF . Kwasniewsk i FAASTea m Progra m Manage r(Airworthines s ND/SD ) 350 1 5t h Stree t Rapi d City , S D 57701-600 0 

### 605-737-303 0 605-737-306 9 (Fax ) Th e Grea t Lake s Regio n FA ASafet yTea m (FAASTeam ) value s you rinput . W e woul d appreciat e you rfeedbac k usin g th e followin g link : http://www.fQa.qov/about/offic e org/headauarter s offlces/avs/stokeholde rf e edback/gfs/field / imageOO l .gi f



### Agenc yExhibi t 7 , pag e 2/ 2 Rushmor e Helicopters , In c FA ADOCKE T NO . CP10GL000 2Rushmor e FA A201 0 002 3 Respondent' s Exhibi t Un t Descriptio n t D I N 1 Diagra m o f fue l ven t fo rlief l xx 2 3 4 5 6 7 8 9 1 0 1 1 ^12
- 1 3 1 4 1 5 1 6 1 7 1 8 1 9 2 0

/ /Fue l syste mdcseriptiu n

Th e fue l syste m o n th e Bel l 2()6 H Lon g Range ri s simila rt o tha i o n th e smalle rJe t Range ri n tha t th e mai n fue l tan k

i s integra l wit h th e rea rpassenge rbenc h sca t However , th e syste m capacit yi s greate ro n th e B206L- I as tw o additiona l fue l tank s ar e locate d beneat h th e cabi n forwar d seats . Th e mai n lan k

capacit yi s 7 6 U S gallon s an d eac h forwar d tan k i s 1 1 U S gallons , givin g a tota l capacit yo f 9 8 U S gallons . O n N206D D thi s capacit yha d bee n furthe rincrease d t o 11 0 U S gallon s b yth e installatio n o f th e tille rnec k 'rang e extender ' modillcation .

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rNi.iM E FUE L riLTE« s ANDCHEC KVALVC S VEfi riTOf ) LEF 7 FUE L CEL L Fue l syste m schemati c Fue l i s transferre d fro m eac h forwar d cel l int o th e mai n fue l tan k b yth e actio n o f a dedicate d dua l elemen t ejecto r(jet ) pumR.pow.cred,j;cspectively , b yfue l unde rpressur e fro m th e outpu t sid e o f th e lef l an d righ t fue l boostjump s site d o n th e floo ro f th e mai n tank . Thes e fue l bleed s ar e passe d :thrmigirwirc~mesh'fiiicrs/chcc k valve s upstrea m o f th e je t pump s an d ar e sense d b yflo wswitches. ^ Los s o f th e fue l flo wi s indicate d t o th e pilo t b yth e respectiv e boos t pum p warnin g light . Thu s i f th e fue l pump s wer e t o fail , o rth e suppl yi n th e mai n tan k become s exhausted , the n thes e light s shoul d illuminate . Fue l quantit yi n th e mai n an d additiona l tank s i s measure d usin g capacitiv e typ e sensors , thei routput s bein g summe d an d presente d as a tota l quantit yo n a singl e gaug e o n th e instrumen t panel . A s th e forwar d tank s ar e interconnected , th e singl e prob e fitte d t o th e lef l forwar d tan k normall ysense s th e quantit yi n bot h forwar d tanks . Wreckag e examinatio n /



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