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AD/DHC-8/11 Amdt 2 - Engine Cowl Door Retention and Pressure Relief
Bombardier DHC-8 Series AeroplanesBombardier DHC-8 Series Aeroplanes
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Bombardier DHC-8 Series Aeroplanes
| AD/DHC-8/11 Amdt 2 | Engine Cowl Door Retentionand Pressure Relief | 21/2017 |
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| Applicability: | Bombardier DHC-8 Model 100 series, serial numbers 3 through 193. |
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| Requirement: | Modify both engine cowlings in accordance with Bombardier Service Bulletin (SB) 8-71-13, as in force from time to time.Note 1: Canadian AD CF-89-15R1 refers.Note 2: The words “as in force from time to time” require compliance with the most recent version of the SB. |
| Compliance: | Within 30 days after the commencement date of this AD, unless previously accomplished.Note 3: Previous compliance with the requirement in AD/DHC-8/11 Amdt 1 constitutes compliance with the requirement in this AD. |
| This AD commences on 3 November 2017. | |
| Background: | There have been instances of loss of engine cowl doors during engine fires. That door loss has rendered the fire extinguishing system ineffective.Amendment 1 of this AD was issued to reflect Revision C of the Requirement Document (Bombardier SB 8-71-13).Amendment 2 is issued to align the AD applicability with that of the Canadian AD and to reference the latest revision of the Canadian AD. |
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Ben Wilson
Delegate of the Civil Aviation Safety Authority
18 October 2017