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AD/LJ45/11 - Engine Firewall
Learjet 45 Series AeroplanesLearjet 45 Series Aeroplanes
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Learjet 45 Series Aeroplanes
| AD/LJ45/11 | Engine Firewall | 11/2007 |
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| Applicability: | Model 45 aircraft, as identified in Bombardier Service Bulletin 45-54-3 Revision 2, or later FAA approved revision. |
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| Requirement: | Inspect the engine pylon trailing edge for unsealed gaps, and clean and seal any unsealed gap in accordance with Bombardier Service Bulletin 45-54-3 Revision 2, or later FAA approved revision.Note: FAA AD 2007-17-17 Amdt 39-15175 refers. |
| Compliance: | Within 12 months after 25 October 2007, unless already accomplished. |
| This Airworthiness Directive becomes effective on 25 October 2007. | |
| Background: | The FAA received a report of unsealed gaps (penetration points) of the engine firewall that were discovered during production. Such a condition, unless corrected, could allow penetration of flammable liquids or fire through the engine firewall into the engine pylon, which could lead to fire inside the aircraft. |
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David Villiers
Delegate of the Civil Aviation Safety Authority
10 September 2007