Summary
We are adopting a new airworthiness directive (AD) for the BHTC Model 407 and Model 427 helicopters. This AD results from mandatory continuing airworthiness information (MCAI) ADs issued by the aviation authority of Canada. The MCAI ADs state that some hydraulic pump driveshaft assemblies may have been delivered with a missing internal plug or fastening rivet. This condition, if not corrected, could result in a loss of hydraulic pressure and subsequent loss of control of the helicopter.
Directive Details
AD Number
FAA-2009-1123
Document Number
E9-29427
Type
Rule
Publication Date
December 11, 2009
Effective Date
December 28, 2009
Affected Manufacturer
Bell Helicopter Textron Canada (BHTC) Model 407 and Model 427
Criticality
important
Emergency
No
Docket ID
Docket No. FAA-2009-1123
Topics
Official Documents
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