Airworthiness Directive · Amendment 39-21421 · Oxygen
Dassault Aviation Airplanes
This AD applies to all Dassault Aviation Model FALCON 7X airplanes, certificated in any category.
Note 1 to paragraph (c): Model FALCON 7X airplanes include those that have embodied Dassault modification (mod) M1000 (commercially known as Falcon 8X) in production.
The FAA is adopting a new airworthiness directive (AD) for all Dassault Aviation Model FALCON 7X airplanes. This AD was prompted by a report of deviations concerning the assembly and overhaul of certain crew oxygen mask stowage boxes, including incorrect application of a certain thread-locker on the fitting sensor screws. This AD requires an inspection of certain crew oxygen mask stowage boxes for discrepancies, and replacement if necessary, as specified in a European Union Aviation Safety Agency (EASA) AD, which is incorporated by reference. The FAA is issuing this AD to address the unsafe condition on these products.
Except as specified in paragraph (h) of this AD: Comply with all required actions and compliance times specified in, and in accordance with, European Union Aviation Safety Agency (EASA) Emergency AD 2021-0036-E, dated January 25, 2021 (EASA Emergency AD 2021-0036-E).
(1) Where EASA Emergency AD 2021-0036-E refers to its effective date, this AD requires using the effective date of this AD.
(2) Where paragraph (2) of EASA Emergency AD 2021-0036-E specifies actions if “any discrepancy is detected,” for this AD a “discrepancy” is defined as an inability to clearly hear oxygen flowing out of the mask during a functional test or see that the yellow blinker on the stowage box does not illuminate.
(3) Although the service information referenced in EASA Emergency AD 2021-0036-E specifies that certain actions may be accomplished by a pilot, this AD does not allow that provision.
(4) The “Remarks” section of EASA Emergency AD 2021-0036-E does not apply to this AD.
Although the service information referenced in EASA Emergency AD 2021-0036-E specifies to submit certain information to the manufacturer, this AD does not include that requirement.
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
