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Certification Memo - Fire. Deletain Rémi Powerplant Installation & Fuel Systems Certification Directorate Novembre 2011. Certification Memo - Fire. Project of Fire Certification Memo Objective capture generic and recurring Fire issues. 22/08/2014. IASFPWG – Atlantic City - November 2011.

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Certification Memo - Fire


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    1. Certification Memo - Fire Deletain Rémi Powerplant Installation & Fuel Systems Certification Directorate Novembre 2011

    2. Certification Memo - Fire Project of Fire Certification Memo Objective capture generic and recurring Fire issues 22/08/2014 IASFPWG – Atlantic City - November 2011 2

    3. Certification Memo - Fire Representativity of Fire in Engine/APU/Combustor designated Fire Zone Issue of consideration of a « single burner  » as representative of an Engine/APU Designated Fire Zone fire Fire Resistance / Fire proofness All CS Inappropriate use of material definition to justify a load withstanding capability function under fire ( Titanium, Aluminium) 22/08/2014 IASFPWG – Atlantic City - November 2011 3

    4. Certification Memo - Fire Fire Demonstration By Test All CS Issue of gas burner severity versus fuel burner use Vibration inconsistently applied CS23, CS27, CS29 ISO2685 not quoted 2D Nacelle Interpretation CS 25-867 Inconsistent and recurrent misinterpretation of rule intend; Inconsistent geometry definition understanding: where start the front of the nacelle, what diameter to consider, where ends the rear of the nacelle; Fire resistance equivalency to aluminium: how to show compliance Inconsistent surfaces to be considered. 22/08/2014 IASFPWG – Atlantic City - November 2011 4

    5. Certification Memo - Fire Protection of adjacent zone to engine/APU/Combustor Designated Fire Zone CS 23.1182 Issue of maximum latent presence of fire hypothesis Need to precise intend of requirement vs 23.1351(e) CS 25.1182 definition of « pod » to be introduced to clarify applicability Zones immediately behind firewall vs zone behind firewall applicability Notion of heat resistant proposed by some applicant that does not exist. 22/08/2014 IASFPWG – Atlantic City - November 2011 5

    6. Certification Memo - Fire Protection of adjacent zone to engine/APU/Combusted Designated Fire Zone CS 27.861/CS 29.861 inconsistent risk exposure time consideration. Trade off between material capability over 15min and function over 5min, Flammable Fluid Fire Protection CS23.863/25.863/27.863/29.863 Clarification of minimization intent Clarification of applicability: fluid categories, zones Clarification of objective in Engine/APU/Combustor designated fire zones. Clarification of intend vs 23.1309/25.1309/27.1309/29.1309 Mitigation means efficiency demonstration 22/08/2014 IASFPWG – Atlantic City - November 2011 6

    7. Certification Memo - Fire Engine/APU/Combustor Burnthrough CS 25.903 Detailed compliance demonstration for risk identification and mitigation CS 23.903 Fire Detection CS 27.1195 Need to clarify « readily observed in flight by the pilot in the cockpit ». CS 23.1195 Need to clarify « readily visible from the cockpit ». 22/08/2014 IASFPWG – Atlantic City - November 2011 7

    8. Certification Memo - Fire Ventilation and Drainage of flammable fluid zones, including DFZ CS 23.1187 / CS 25.1187 / CS 27.1187 / CS 29.1187 CS 23.863 / CS 25.863 / CS 27.863 / CS 29.863 CS 23.967/ CS 25.967 / CS 27.967 / CS 29.967 Detailed compliance demonstration for ventilation Detailed compliance demonstration for drainage 22/08/2014 IASFPWG – Atlantic City - November 2011 8