# ~~ U.S. Departm e nt of Transportation Federal Aviation Administration

Se pt embe r 1 9 , 20 1 4

M r . Adam Dennis Manager, Certification Eng in ee r ing Viking Air Limited Vi c toria int erna tional Airport 1959 de H av illand Way Sid n ey, Briti s h Col umbia V8L 5V5, Canada D ear Mr. Adam Dennis: Exe mption No. 1105 9 S mall Airplan e Dir ec torat e 90 I L oc u st St re et Kan s as C i ty , Mi ss ouri 64 1 06

R eg ulatory Docket No. FAA-2011-1345

T hi s letter is to inform you that we ha ve g ranted you r request for exemption

. It transm its ou r d ec i s ion , explains its basi s , and gives you the cond i tions and limitations of th e exe mption , includin g th e date it ends. The Basis for Our Decision B y letter dat e d August 1 3, 20 14 , you peti tioned the Fede ra l Aviation Admini stration (FAA) on behalf of Viking A i r Limited (VAL) for an extension of E xemption No

. 1046 5. That exe mption fr o m 

### § 23 .1549(b) of Titl e 14 , Code of Fede ral Regulations (14 CF R ) p e rmit s VAL to rece i ve type certification appro v al of the M ode l DHC -6 Se rie s 400 airp lanes w ith a non- co mpli a nt type de s ign for the engine indication syste m for a limi ted tim e. In yo ur petition , you indic a te th at a s mall number of U. S. airc raft are affected by Exemption No. 10465 and VAL i s requesting anoth er 1 2 month extens io n to th e exemption. T hi s wo uld ens ure that aircraft deli vered afte r July 3 1 , 2 015 wi ll be fully compliant with 

### § 23

. 1549(b) and all in -se rvice airc raft will b e retrofitted wit hin three months from that date (October 31, 20 15). You state that you are confident this additional time wi ll enable you to compl e te the ce rt ification of the modifi ed av ionics. You hav e a l so co mmitt ed to seg regat e th e e ngin e display software co rrection fro m the optional avionics upgrade s if the upgrad e ce rtifi ca ti on cau ses any additional d e la ys that pr e clude the eng in e di s pla y correction.

ACE-14-339-ET herefore, VAL requests an exte n sio n to Jul y 3 1 , 2015 for in corporation in to production lin e req uirements of a eng ine indi cation sys t em fu ll y comp li ant with the require m e nt s of 2


### § 23.1549(b) and an extension to October 31 , 20 1 5 for retrofit of all in-service Model DHC-6 Series 400 a irpl an es. This additional tim e will enable yo ur c u stomers to schedu le the incorporatio n of the exemption's term i nating actio n along with their " Pha se 2" upgrades in to a s in g le mainte n a nc e event and k eep their downt ime to a minimum

. The FAA h as determ i ned that good cause ex i sts for not p ubli shing a summary of th e petition in the Federal Register becau se the requested extens ion of th e exemption wo uld not set a precedent and any de lay in act in g on this petition would be detr im e nt a l to VAL. H av ing reviewed your reasons for requesting an exempti on, I find that- • they are similar 

### in all material respects to relief previously requested in the enclosed

Grant of Exe mpti on Nos. 10465 and 1046 5A; • the reasons s tated by the FAA fo r g rantin g the e nc losed Grant of Exemption Nos. 1046 5

and 10465A al so app ly to the situation you present; and • a grant of exemption i s in the pub li c interest. Our Decision Under the a uth ority contained in 49 U.S.C. 106 (f) , 40 11 3 and 44701, which the FAA Adm ini strator has delegated to me, I hereby grant V ikin g Ai r Lim ited an exemption from 14 CFR 

### § 23 .1549(b) to the exten t necessary to allow VAL to rece i ve type certification approva l of the Mode l DHC-6 Se ri es 400 airp lanes with a non-comp li ant type design for t h e engine ind ication system for a limited tim e , sub j ect to the conditions and limitat ions described below. Co ndition s and Limitation s 1. Viking Air Limited must certify and incorporate into the production lin e requ irements for eng i ne indications fully compliant with the requirements of 

### § 23.1549(a), (b) , and (c), into the model DHC-6 Series 400 a irplan es no later than Jul y 3 1 ,2 01 5. 2. Viking Air Limited must retrofit the model DHC- 6 Ser ies 400 a irpl anes de li vered under the terms of the exempt io n with the new engine ind icati ons described in Cond ition 1 above no later than October 3 I, 20 1 5. 3. Until the in corpo ration of the c han ges require d i n Conditions 1 and 2 of this exemption h ave been completed, Viking Air Limited must add to the airp lane flight manual (AFM) a description of the indications and their non-compliant use of color, and the necessary instructions for properly int e rpreting indication s. 4. For airplan es su bj ect to Co nd ition 2 of this exe mpti on , the operating li mitations sec t ion of the airp lan e flight manual (AFM) mu s t include the following state ment:

### " No pers on m ay operate thi s 

### a irplane afte r Oc tober 31 , 2 015 , unl ess the en g in e indic atio n s hav e bee n modifi ed in acco rdance w ith the term s of Exemption N o. 11 059" 3

Thi s state ment m ay be r emoved f rom th e AFM after the r equired modification ha s bee n made. This exempti on terminates on July 31 , 20 1 5, unl ess soone r superseded or rescinded. S in ce rely ,



# u~ Earl Lav.rrence Manager, Sma ll Airplane Dir ec torat e A ircraft Certification Service Enc losure[s]Exemption No. 10465 UNITED STATES OF AMERlCA DEPARTMENT OF TRANSPORTAT I ON FEDERAL AV I AT ION ADMINISTRATION KANSAS C ITY, MO 64 1 06

In the matte r of the petition of VIIG NG A IR LIMI TE D for an exemption from 

### § 23 .1549(b) ofT itle 1 4 , Code of Federal Regulat ions R eg ul a tory Docket No. FAA -2011-13 4 5

1. GRA N T O F EXEM P T IO N By letter dated November 30, 201 1 , Mr. Adam Dennis , Certi fication Eng i neer, Viking Ai r L i m ited (VAL) , 1 959 de Havi ll an d Way, S id n ey, B r iti s h Co lumb i a V8L 5V5 pet it ioned the Federal Av i at ion Adm inistration (FAA) on beha l f of VAL for an exemption from 

### § 23.1549(b) ofTi tl e 14 , Code of Federal Regu l at ions (14 CFR). The propo se d exemption, if granted , would a ll ow VAL t o temporar i ly use the color white in lieu of green o n the Honeywell Prim u s Apex (Apex 

### TM) E lectro ni c Flight Instrument System (EF l S) to depict n orma l engi n e operating condi t ions d u ri n g certification testi n g of the VA L DHC-6, Series 400 Twin Otter airp l ane . T h e pe t ition e r r e qu es ts re lief from th e following reg ul a ti o n: Section 23 .l549(b) prescribes , in pertinent part, that:

" (b) Eac h norm a l ope r at in g r a n ge m u st b e m arked w ith a g r een arc o r g r ee n li ne, not extendi n g beyo nd the maximum and mi ni mum safe li mits ; " T h e p e ti t i o n e r s upp o rt s it s r e que s t wi t h th e follo w in g inform a tion: T he petitioner states: "Viking A i r Li m ited (VAL) requests a temporary exempt io n from the requ ireme n ts of 14 CFR 23.1549(b) for the VAL DHC-6 Ser i es 400 (Twin

ACE-12-129-EOtter) to th e ex te n t necessary to a ll ow FAA type cert i fication of th e a ir c raft w i th the current Honeywell Primu s Apex

### TM eng in e displays. As cond iti ons for g ra nting the re qu es ted temporary exe mption , VAL co mmits to th e fo ll ow in g: 2. VAL wo rk i ng w i th Honeywelllnt e mationallnc. w ill desig n and ce rtify an eng ine display configurati on o n Primus ApexTM fo r the DHC- 6 Series 400 spec ifi c to mee tin g the FAA normal e ng in e display co lo r require me n t s as s p ec ified in FAR 23

. l549(b ). 3. T hi s de s ign and ce rtificati o n will b e accomplished w ithin fiftee n (15) month s of grant in g thi s exe mption. 4. VAL w ill provide a service bull etin to all US -r egistere d fi e ld a ircraft a f te r certifying th e new dis pl ay configuration. " 

### 5

Th e FAA has d e te nnin e d that good cause e xi s ts for waiving the req uire me nt for Fed e ra l Regis te r publication b ecau se th e exe mpti o n , if grant e d , wo uld not set a precedent , and any de lay in ac ti ng on thi s petition wo uld b e detrimental to VAL. 

### The FAA's a nalysis 

### i s as follows: The FAA finds th at: l

. Th e int egr at io n on the ApexTM and with Crew A ler tin g System (CAS) messages , dynamic cauti o n and warning e ngine display ranges , and integration wit h the Maste r Caution I Warnin g ( M CW) Syste m achieves a hi g h leve l of safety th at ensures imm e di ate pil ot awareness o f caution or wa rning conditions. 2. The inte g rate d cockpit environm e nt d e veloped aro und Honeyw e ll 's Primus ApexTM a l so e nh a nc es the availability of engine inf or mation on both the pilot and co-pi lot ' s Primar y F li gh t Di sp lays (PFD ' s). 3

. The ove ra ll int eg ratio n of the cockpit , the cautio n and warning leve l CAS messages avai lable wi th respect to engi ne torque and T5 di s pl ays, and the associated digital display in verse vid eo caution and warn ing leve l display de s ign effec ti ve ly pro vi d es the crew w ith c urre n t o p e rating in fo rm ation, c rew a le rtin g , and ac hi e v e a hi g h degree of sa f ety. 4. T he denial o f this petition for exe mption wo uld delay th e U nited S t a tes certification o f the DH C-6 Series 4 00 airplan e for approxi m a te ly fi fteen ( 1 5) months. VAL and U.S

. DH C-6 Se ri es 40 0 ope rators wo uld ex p erience significan t reve nu e loss as a resu lt. Ad diti o n a ll y , th e US A rm y wo uld be de layed access to the ai rcraft. Thi s de lay m ay a l so res ult in aircraft order cance ll a ti o n s and rev e nu e loss for Viking ' s US partne rs and s uppli e rs , includin g Honeyw e ll Int e rnational.

### 6 5. The 

### FAA's Decision In consi der at ion of th e foregoing , I find that a gra nt of exemptio n is in the public inter est. Therefore, pursuant to th e aut hority co nta in ed in 49 U.S .C. §§ 40113 and 4470 1 , delegated to me b y the Administrator , V i kin g 

### Air Limited is gran ted an exemption wit h t ime- li mi t ed conditio n s from §23. 1 549(b) to the ex te n t necessary to a ll ow type certification of the mod e l DHC-6 Series 400 airpl anes with engine indication s not in compliance w ith the requirements of§ 23 .1 549 (b). Fo r the model DH C-6 Series 400 a irplane s , this exe mption is su bje ct to th e following condi tions and limitations: 6. Cond ition s and Limitations 1 . Viking Air Limit ed must cert i fy and incorporate into the production l in e requireme n ts for e ngine indications fully co mpliant w ith the r equi re ments of§§ 23.1549(a), 

### (b) , and (c) , into the model DHC-6 Series 400 airp la n es no l ate r than July 31, 2013. 2. Vikin g A ir L i mit e d must retrofit the mod e l DHC-6 Se ri es 400 airp la nes delivered under the terms of the exemption with the new engine indicati o n s described in Cond ition I above no later th an D ecembe r 31, 20 1 3. 3. Until th e incorporation of the c han ges required in Conditions 1 and 2 of this exe mption h ave been compl e ted , Vikin g A ir Limit ed must add to th e a irpl ane flight manual (AFM) a de sc ription of the indication s and their non-comp li ant u se of co lor , a nd the nec essary in structions for prop e rly interpreting indications. 4. For airplanes sub j ect to Condition 2 of this exemption , the operating limi ta tion s sectio n of th e airp lane fli g ht manual (AFM) mu st includ e the following s t atement:

" No person may opera te this airplane afte r Decemb e r 3 1 , 2013 , unless the eng ine indications have been modified i n acco rdan ce w ith the terms of Exe mption No. " This s tat e men t may be removed from the AFM after the required mod i fication has b een m ade. T hi s exemption terminates on Jul y 3 1 , 20 1 3, unl ess soo ner superseded or resc ind ed

. Issued in Kan sas City, MO , o n Marc h 1 , 2012

. sf J ohn Colomy Acting Manager, Small Airplane Dir ec torate A ir craft Cer tifi cation ServiceU.S. Departme n t of Transportation F edera l Av iation Admini s tration Small Airplan e Directorate 90 I L ocust Street Kansas City , Mi ssouri 64 I 06

Da t e: Ju l y 16 , 20 1 3 To: Mr

. Adam Dennis Manager, Ce rtification E ngineering Viking Air Limited Vi ctoria I n

t e rn ationa l Ai rport 1959 de Havi ll an d Way Sidne y, British Columbia V8L 5V5 , Ca nada

Subject: Correction to Exemption No. I 0565A Action: P e r Your R equest

Re m arks: X For Y o ur in fo rm at io n Per Our Conve rsation No te and Return Discuss W i th Me

_ F or Y our App rova l

_ For Your Signature Co mment _ Take Appropriate Action Pl ease Answer

_ Prepare Repl y For:

Vik ing Air Lim i ted , Exemption No. 1 0465A did no t i n clude an updated date i n co n dition nu m ber 4 to allow ai rc raft operators to take fu ll a d vantage of th is exe m ption extension. Attac h ed i s a co rrec te d co p y w ith th e u pdated date in co nditio n n umb e r f ou r. Pl ease fil e thi s w ith the o ri g in a l signe d Exemptio n No

. 104 65 and 1 0 465A. We are sorry for the erro r and hope it has not in convenienced you. l f you have any q u est ions, pl ease call. // S IGNE D// Wi ll iam Sc hi ns tock M a n age r , R eg ul at io n s & Po l icy ACE- 111 Fede ra l Av iat io n Ad m in i s tr ation

# 0
U.S. Department of Transportation 

### Fe deral Aviation Administration Sma ll Airp la n e Directorate 90 I Locust Str ee t Kan s as City , M i ss ouri 64106



### CORRECTED COPY T hi s letter co rrec t s the Jun e 14 , 2013 , le tt e r w e sent g ra nting yo ur petition to ex te nd Exemption No. I 0465. Th e date in cond ition numb e r fou r s hould h ave been updated to give op e rato r s the fu ll be n efit of the exemption ex tens io n . Jun e 14,201 3

Mr. Adam D e nni s Manager, Certification Engineering Vik ing Air Limi ted V ic toria In te rn at ional A irp ort 1 959 de Havilland Way S idney , Briti s h Co lumbi a V8L 5V5 , C an a da Dear Mr. D enni s: Exe mption No. 1 0465A Re gu latory Do cket No. F AA-2 0 II

- 1345

This letter i s to inform you that we hav e g ranted yo ur p etiti o n to ex te nd Exemption No. 10465

. It exp l a in s the b asis for our d ecis ion and d escri b es it s effect. 

### The Basis of Our Decision By le tter dated May 6 , 20 1 3 , you petitioned the Fede ral Aviation Administration (FAA) on behalf of V iking Air L imited (VAL) for an extens ion of Exe mpti o n No. 10465. That exemp tion from 

### § 23.1549(b) of Title 14 , Code of Federal R egu lat ions ( 14 CF R) p erm it s V AL to r ece ive type certification ap prova l of the Model DH C-6 Se ries 400 a irplanes w ith a non -c ompliant type de s i g n for the engine indication sys tem for a limited time. In yo ur petition , you indi cate that due to the sma ll number of aircraft affected by Exemp ti on No

. 1046 5, and the fact that three of th e s eve n aircraft are operated b y one entity , VAL i s requ es ti ng a 1 2 month extension to the exe mption. Thi s wo uld e n s ure that aircraft deli ve r e d afte r Jul y 31, 2 014 will be fully comp li ant wit h 

### § 23. 1549 (b ), and a ll aircraft w ill be retrofitted w ithi n three m on th s from that date ( O c tob e r 31 , 20 14). This additiona l time wi llenable your customers to schedu le the incorporation of the exemption's terminating action along with their " Pha se 2 " upgrades into a single maint e nance event and keep their downtim e to a minimum. The refore , VAL requ ests an ex t ension to July 31, 2014 for incorporation into production line requirements of a eng in e indication system fully comp li ant with the requirements of§ 23 .1549(b) , and an ex tension to October 3 1 , 20 14 for retrofit of all fielded Model DHC-6 Series 400 airp lanes. The FAA has determined that good cause ex i sts for not publishing a summary of the petition in the Federal Regi s ter becau se the requested extension of the exemption would not set a precedent , and any de la y in acting on this petition would be detrimenta l to VAL. Our Decision: The FAA has detennined that the justification for the issuance of Exe mption No. 10465 , remains valid w ith respect to this exemptio n and is in the public interest. Therefore, under th e authority provided by 49 U.S.C. 40113 and 44701 , which the FAA Admi ni strator ha s delegated to me , 1 grant your petition to extend Exemption No. 10465. The Effect of Our Decision Our decision extends the termination date of Exemption No. 10465 to July 31, 20 14 , unless superseded or rescinded. Co nditions l , 2 and 4 of the original exempt ion are changed as follows: 1. Viking Air Limited must certify and incorporate into the production line requirements for engine indications fully compliant with the requirement s of§ 23.1549(a) , 

### (b), and (c) , int o th e model DHC-6 Series 400 airp lan es no later than Jul y 31, 2014. 2. Viking Air Limited must re trofit the model DHC-6 Series 400 airplanes delivered under the terms of the exemption with the new engine indication s described in Cond ition 1 above no lat er than October 31, 2014. 3. Until the incorporation of the changes requi red in Conditio n s 1 and 2 of this exemption have been completed , Viking Air Limited must add to the airplane flight manual (AFM) a desc ription of the indi cations and their non-compliant use of co l or, and the n ecessary instructions for properly interpreting indications. 4. For airplanes subject to Condition 2 of this exemption , the operating limitat ion s section of the airplane flight manual (AFM) must include the following s tatement:

' 'No person may operate this airplane after October 31 , 2014 , unless the eng ine indications have been modified in accordance with the terms of Exemption No. 10465 "This s tatement may be removed from the AFM after the r e quired modification h as been made.

All other conditions and limitations of Exe mption No. 10465 rema in the same. This l etter mu st be attached to, and is a part of , Exemptio n No. I 0465. Si ncere l y, //S IGNED// Ea rl Lawrence Manager, Small Airp lane Directorate Ai rcraft Certificati on Service