Special Condition UK.SC.E.0001 Cabin Evacuation - Protection from Fuel Tank Explosion due to External Fuel Fed Ground Fire

For comments on the proposal that the CAA introduces a special condition to be used to protect the cabin occupants during evacuation of fuel tank explosion triggered by an external ground fuel fed fire.

The UK CAA is consulting on a Special Condition that is applicable to CS-25 Large Aeroplanes.

This Special Condition is to address the design change that introduces the conformal fuselage structural fuel tank to the aeroplane, also called rear centre tank (RCT), and the protection of cabin occupants during evacuation, from the risk of fuselage tank explosion triggered by an external fuel fed ground fire.

The Consultation Paper Special Condition UK.SC.E.0001 Issue 1 provides the full detail of the identified issue, and the associated Special Condition.

We received 1 response.
The response agrees that the proposed Special Condition is substantively the same as the equivalent EASA Special Condition and the harmonised FAA Special Condition, the difference with the FAA Special Condition being wording clarification only. The response suggested that CAA should align the CAA Special Condition wording with that of the FAA Special Condition.

We acknowledge the response and thank the responder for their suggestion.
The CAA believes that the wording of the CAA Special Condition is sufficiently clear and that aligning with the Certificating Authority’s Special Condition, given the common requirements set on this project, is more appropriate in this case.