1 3 AUG 2014

Mr. Pat Mullen

FAA

- Small Airplane Directorate

901 Locust St

Room 301

Kansas City, MO 64106

USA

Dear Mr. Mullen :

SUBJECT: FAR 23.1549(b)

- Exemption No. 10465

– APPLICATION FOR E XTENSION

REFERENCE: FAA Docket Number : FAA

- 2011

- 1345

Further to my letter dated 02 MAY 2013, Viking Air Limited (VAL) and Honeywell International Inc.

(HI) have been diligently working to address compliance with 23.1549(b) for the DHC

- 6 Series 400 to

satisfy the “ Conditions and Limitations ” stated in the subject exemption (attached for your reference)

.

Due to unforeseen program delays with the integration of the Autopilot system on the Series 400, t he

program h as not be certified in time to meet the Exemption’s requirement of 31 JUL 2014 for

incorporation in production.

VAL is requesting an additional t welve

- month extension to the exemption. This would ensure that

aircraft delivered after J u ly 31, 2015 will be fu lly compliant with 23.1549(b), and all aircraft will be

retrofitted within three months from that date ( O ctober 3 1 , 2015).

To date, VAL has exported s even aircraft to the US , and our current order book shows a possibility of

ten more aircraft o ver the next year. Of these s even teen aircraft, eight require the Autopilot and TCAS

II systems. It is expected to take three weeks per aircraft to incorporate the modifications once they are

approved. The aircraft without the Autopilot and TCAS II systems will require limited modification

an d software updates, which can be completed in less than a week. Table A shows the aircraft delivery

schedule and the air craft awaiting the upgrades.

I am confident given the current state of the program, and our impending HI software freeze, VAL will

be in a position to certify the Phase 2 configuration, including the outst anding exemption requirement,

during the fi r st quarter of 2015 . The extension request time of 3 1 J UL 2015 will provide the additional

buffer to ensure no further extension will be required.

This additional time will enable our customers to schedule the incorporation of the exemption’s

terminating action along with their “Phase 2” upgrades into a si ngle maintenance event and keep their

downtime to a minimum.

1 of 2If for any reason, there are additional delays in the Phase 2 program that would preclude the

certification of compliance to 23.1 5 49(b) by 31 JUL 2015, Viking Air Limited will segregate these

items to ensure the requirements of Exe m ption No. 10465 are met.

Honeywell Phase 2

S/N Customer Planned Delivery Autopilot TCAS II

852 US Army Delivered Required Required

862 US Army Delivered Required Required

863 US Army Delivered Required Required

869 DFAIR Delivered Required Required

870 TUDOR Delivered Required Required

876 LOCH ARD Delivered Not Ordered Not Ordered

900 TWIN EXPRESS Delivered Not Ordered Not Ordered

90 1 HIL CO R P JU L 2014 R equired Required

90 3 GAL JU L 2014 Required Required

90 4 GAL JU L 2014 Not Ordered Not Ordered

90 5 LOCH ARD AUG 2014 Not Ordered Not Ordered

90 6 LOCH ARD AUG 2014 Not Ordered Not Ordered

9 13 GAL DEC 2014 Required Required

9 1 8 V acant J AN 201 5 U nknown U nknown

9 2 0 L OCH ARD M AR 201 5 N ot Ordered Not Ordered

9 2 1 A EROSTAR APR 201 5 N ot Ordered Not Ordered

9 2 6 A EROSTAR JUN 201 5 N ot Ordered Not Ordered

VAL will be conducting certification testing starting O ctober and welcome the FAA to see the green

arcs in person. If you would like to visit us in Victoria, p lease contact the undersigned to set up

arrangements

, or request additional information for this e xtension

.

Yours truly,

Adam Dennis

, P.Eng.

Manager, Certification Engineer ing

cc.

Jim Rutherford

, FAA

- Small Airplane Directorate

Roger Goossens, TCCA

- Prairie and Northern Region Table A

– US Registered Aircraft Deliveries

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