Pursuant to subsection 5.9(2) of the Aeronautics Act and after taking into account that the exemption is both in the public interest and is not likely to adversely affect aviation safety, I hereby exempt Canadian air operators operating Cessna Caravan Models 208 and 208B retrofitted with Pratt and Whitney (P&W) PT6A-42A turboprop engines installed in accordance with FAA issued Supplemental Type Certificates SA02357LA and SA02467LA, from the requirements of paragraphs 723.22(1)(a) and (b) of the Commercial Air Service Standards (CASS) made pursuant to paragraph 703.22(2)(b) of the Canadian Aviation Regulations (CARs), subject to the conditions set out below.

Details of paragraph 703.22(2)(b) of the CARs and paragraphs 723.22(1)(a) and (b) of Standard 723 – Air Taxi – Aeroplanes are set out in Appendix A of this exemption.

Note:  The transportation of passengers in single-engined aeroplane under night VFR or IFR conditions is known as SEIFR operations.


This exemption authorizes Canadian air operators to utilize Cessna Caravan Models 208 and 208B retrofitted with P&W PT6A-42A turboprop engines which are installed according to FAA issued Supplemental Type Certificates (STCs) SA02357LA and SA02467LA. The air operator shall train and test its flight crew members in accordance with the CASS requirements and the specific requirements linked to the operation of PT6A-42A turboprop engines.


This exemption applies to a Canadian air operator who utilizes Cessna Caravan 208 and 208B models retrofitted with P&W PT6A-42A turboprop engines.  The installation of the engines must be done in accordance with the FAA issued STCs - SA02357LA and SA 02467LA when conducting SEIFR operations under subpart 703 of the CARs.


This exemption is subject to the following conditions:

  1. The air operator shall have the Cessna Caravan 208 / 208B models retrofitted with the P&W PT6A-42A turbo-prop engine in accordance with the FAA issued STCs numbered SA02357LA or SA02467LA;
  2. The air operator shall ensure that:
    1. The Special Instruction (SI) 01-2013, regarding the 1st stage compressor stator check at 400 hours interval or 400 abbreviated cycles (whichever comes first) for Blackhawk installed PT6A-42A turbo-prop engines, is completed by 31May 2015 for the current fleet of  Blackhawk modified Caravan 208/208B. Subsequently, the fleet of Caravan 208/208B with Blackhawk installed PT6A-42A turbo-prop engine shall be maintained in conformity with this Special Instruction;
    2. By June 30, 2015, the current fleet of Blackhawk installed PT6A-42A turbo-prop engines shall have the upgraded new stator having the improved braze process. All future acquisition of Blackhawk installed PT6A-42A turbo-prop engines shall have this upgraded stator;
    3. The deceleration check, to enable early detection of bellows corrosion in the FCU installed on the PT6A-42A turbo-prop engine, is to be performed on all Caravan 208/208B models fitted with this engine at intervals of 100 flight-hours, as detailed in The Maintenance Manual Chapter 71-00-00 Power Plant – Adjustment/Test;
  3. The air operator's training program shall include syllabus covering P&W PT6A-42A turbo-prop engine systems, normal/abnormal/emergency operations and its limitations;
  4. The air operator shall inform the Minister and the STC holder about the in-flight shutdown (IFSD) (all causes) and where the Minister determines that the reliability rate no longer meets the target criteria, it shall result in the termination of this exemption;
  5. With respect to (4) above, where the air operator cannot establish the cause of the IFSD or is not able to demonstrate the effectiveness of the corrective action thereof, within a reasonable period of time, it shall result in the termination of this exemption; and
  6. This exemption shall be terminated where there is a series of IFSD occurrences (more than two within one year) that are engine or systems related.


The exemption is in effect until the earliest of the following:

  1. December 31, 2019 at 23:59 EST;
  2. the date on which any of the conditions set out in this exemption is breached; or
  3. the date on which this exemption is cancelled in writing, by the Minister, where she is of the opinion that it is no longer in the public interest or that it is likely to adversely affect aviation safety

Dated at Ottawa, Ontario, Canada, this 17th day of December 2014, on behalf of the Minister of Transport.

“Original signed by”

Martin J. Eley
Director General
Civil Aviation

Appendix A

- Relevant provisions of the CARs and CASS

703.22  Transport of Passengers in Single-engined Aircraft

  1. Subject to subsection (2), no air operator shall operate a single-engined aircraft with passengers on board in IFR flight or in night VFR flight.
  2. An air operator may operate a single-engined aircraft with passengers on board in IFR flight or in night VFR flight if the air operator
    1. is authorized to do so in its air operator certificate; and
    2. complies with the Commercial Air Service Standards.

723.22 Transport of Passengers in Single-Engined Aeroplanes

The standard for transport of passengers in a single-engined aeroplane under IFR or VFR at night is:

  1. General
    1. only factory built, turbine-powered aeroplanes are permitted;
    2. the turbine-engine of the aeroplane type must have a proven Mean Time Between Failure (MTBF) of .01/1000 or less established over 100,000 hours in service; and
    3. pilot training in accordance with subsection 723.98(24).


726.07 Quality Assurance Program (amended 2005/05/31)


  1. Where the air operator carries passengers in single engine aircraft under IFR or VFR at night pursuant to subsection 703.22(2), the program shall include engine trend monitoring or equivalent procedures to identify any deterioration in engine performance and reliability. (amended 2005/05/31)


Supplemental Type Certificates - Reference :

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