Airworthiness Directive · Amendment 39-18907 · Engine exhaust
Diamond Aircraft Industries GmbH Airplanes
Superseded. A later AD replaced this one: AD 2018-10-10. Comply with the one in force.
This AD applies to Diamond Aircraft Industries GmbH Model DA 42 airplanes, serial numbers 42.004 through 42.427 and 42.AC001 through 42.AC151, certificated in any category, that have:
(1) either a TAE 125-02-99 or TAE 125-02-114 engine installed; and
(2) either DAI part number (P/N) D60-9078-06-01_01 or Technify P/N 52-7810-H0014 01 engine exhaust pipes installed.
We are adopting a new airworthiness directive (AD) for Diamond Aircraft Industries GmbH Model DA 42 airplanes. This AD results from mandatory continuing airworthiness information (MCAI) issued by the aviation authority of another country to identify and correct an unsafe condition on an aviation product. The MCAI describes the unsafe condition as failure of the propeller regulating valve caused by hot exhaust gases coming from fractured engine exhaust pipes. We are issuing this AD to require actions to address the unsafe condition on these products.
Unless already done, do the following actions.
(1) Before or upon accumulating 40 hours time-in-service (TIS) on the affected engine exhaust pipes or within the next 10 hours TIS after the effective date of this AD, whichever occurs later, and repetitively thereafter at intervals not to exceed 50 hours TIS, inspect each engine exhaust pipe following Diamond Aircraft Industries GmbH Mandatory Service Bulletin MSB-42-129, dated May 17, 2017.
(2) If any crack(s) is/are found on any engine exhaust pipe during any inspection required by this AD, before further flight, replace the affected engine exhaust pipe(s) following Step 14 (page 8) of Diamond Aircraft Industries GmbH Work Instruction WI-OSB-42-122, Revision 2, dated June 24, 2016.
(3) The replacement required by paragraph (f)(2) of this AD does not terminate the repetitive inspections required by paragraph (f)(1) of this AD when a DAI part number (P/N) D60-9078-06-01_01 or Technify P/N 52-7810-H0014 01 engine exhaust pipe is installed.
The aircraft, engines and makers this AD names, by the model designations in its text. A model listed here may still be outside the AD's serial ranges.
Aircraft
