PWK 12/20/2013 US Department of Transportation Docket Operations West Building Ground Floor, Room W12 - 140 1200 New Jersey Avenue, SE. WASHINGTON, D.C. 20590 USA

Reference: Docket No FAA-2006 -26135 - Flight data recorders: filtered data Regulation, Final Rule Please contact Scott Spjuth Tél: 847 537 - 1205 Fax: 847 541 -2252

mailto 743 Sumac Road Wheeling, IL. 60090 SUBJECT: F900EX-EASy N590CL - Petition for Exemption

Applicable to: Flight data recorders: filtered data RegulationDear Sir or Madam:

In accordance with the provisions of Title 14, Code of Federal Regulations (14 CFR) §1 1.61 , Northern Illinois Flight Center, for F900EX-EASy N590CL , we submit a petition for an exemption from a section of 14 CFR Part 135. 156. You will find in attachment to this letter the necessary information to support our petition. Should you have any question, please do not hesitate to contact us at the following address: Scott Spjuth 743 Sumac Road Wheeling, IL. 60090 847 537 - 1205 847 541 -2252 fax mailto: Northern Illinois Flight Center 743 Sumac Road Wheeling, IL. 60090 Petition For Exemption In accordance with the requirements of 14 CFR §11.81(a) -(g), we provide the following detailed information in support of our petition: 14 CFR 11.81(a) - Contact information: Scott Spjuth 743 Sumac Road Wheeling, IL. 60090 847 537 - 1205 847 541 -2252 fax mailto: Northern Illinois Flight Center 743 Sumac Road Wheeling, IL. 60090 14 CFR 11.81(b) - Specific section from which relief is sought: For F900EX-EASy N590CL, we request relief from the following portion of 14 CFR: §135.156, Amdt 135 - 120, Flight data recorders: filtered data (d) Compliance. Compliance is required as follows: (4) After April 21, 2014, no aircraft flight data recording system may filter any parameter listed in paragraph (c) of this section that does not meet the requirements of Appendix D or F of this part, unless the certificate holder possesses test and analysis procedures and the test results that have been approved by the FAA. All records of tests, analysis and procedures used to comply with this section must be maintained as part of the correlation documentation required by § 135.152 (f)(1)(iii) or (f)(2)(iii) of this part as applicable.14 CFR 11.81(c) - Extent and reason for seeking relief:

For F900EX-EASy N590CL, we are requesting an exemption from compliance with the above listed portion of the flight data recorders . Compliance with the regulations requires retrofit with EASy II upgraded avionics Load. Considering the large amount of Falcon aircraft being retrof itted with EASy II upgraded avionics, there is a significant waiting time before being accepted in a Service Center for retrofit. The amount of aircraft retrofitted monthly is limited worldwide, by the large amount of equipments to supply. Finally, this retrofit requires a significant downtime to adapt to scheduled maintenance checks in a way to maintain reasonable operational use of our aircraft. After review, we plan to retrofit our aircraft with EASY II upgraded avionics June 18, 2014 14 CFR 11.81(d) - Public interest / benefit: Being unable to operate Northern Illinois Flight Center’s airplanes would have a significant economic burden on us. Denial of this petition would not be in the public's interest and would significantly reduce the operational capability of the affected aircraft, relegating these business aircraft to a state of reduced capability: indeed, Flight Data Recorder removal of data filtering is covered in EASy II global avionics upgrade offering others functionalities such ADS -B Out, FANS 1A, ATNB1 or LPV. For the period in which the exemption would be in effect, there would not have any safety degradation. 14 CFR 11.81(e) - Information supporting this petition: This petition for exemption is related to the Flight Data recorder: data filtering to be removed, as mandated by 14 CFR §§135.156 Amendment 135 - 120. This exemption, if granted, would allow us to benefit from the commercial use of F900EX-EASy N590CL between April, 21, 2014 and June 18, 2014. If this petition is denied, then com mercial flight operations of F900EX-EASy N590CL will have to be interrupted until EASy II upgraded avionics retrofit is applied. Granting this exemption would not affect nor degrade the inherent safety of the airplane. This exemption deals only with the recording of 

### pitch control surface position (parameter 15), lateral control surface position (parameter 16), yaw control surface position (parameter 17) and cockpit flight control input forces (parameter 88) ; it therefore has no impact on operational safety. 14 CFR 11.81(f) - Federal Register summary: Petitioner: Northern Illinois Flight Center Affected Regulations: 14 CFR §135.156(d)(4) , Amdt 135 - 120 . Summary of Relief Sought Northern Illinois Flight Center, seek exemption from section 14 CFR part 135 .156 to allow F900EX-EASy N590CL to operate with filtered data from April, 21, 2014 to June 18, 2014.