Airworthiness directives › 2020-20-16
AD 2020-20-16 Airworthiness Directives; Airbus SAS Airplanes
Models named: A350-941, -1041. Read the applicability below — it usually turns on serial or part numbers too.
Applicability*9
This AD applies to all Airbus SAS Model A350-941 and -1041 airplanes, certificated in any category.
Compliance
Comply with this AD within the compliance times specified, unless already done.
Required actions
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) AD 2020-0027R1, dated February 21, 2020 (“EASA AD 2020-0027R1”); and EASA AD 2019-0301, dated December 12, 2019 (“EASA AD 2019-0301”).
Unsafe condition
This AD was prompted by reports of electro-hydrostatic actuator (EHA) units that were returned to the manufacturer with degraded insulation resistance in the direct drive solenoid valve (DDSOV); investigation results revealed that moisture ingress, due to incorrect sealing application, had caused this degradation. This AD was also prompted by a report of a technical issue detected on EHAs installed on inboard ailerons and elevators, causing potential erroneous monitoring of those actuators. The FAA is issuing this AD to address degraded insulation resistance, which could lead to the DDSOV being unable to command or maintain the EHA in active mode, and possibly result in reduced control of the airplane. The FAA is also issuing this AD to address the possibility of an in-flight loss of inboard aileron or elevator control, which, due to the resulting drag, would lead to increased fuel consumption, and when combined with one engine inoperative, could result in reduced control of the airplane.
Affected ADs
This AD replaces AD 2018-17-05, Amendment 39-19359 (83 FR 40438, August 15, 2018) (“AD 2018-17-05”).
Read the original on the Federal Register →
You just looked this one up by hand
TrackAD holds all 12,278 of them and matches them against the aircraft you actually look after — airframe, engine, propeller and appliances in one pass — then works out what falls due and when.
- Bring your existing list in from a spreadsheet Paste the rows straight out of Excel. Headers like C/W Date and N/A are read for you.
- A copy that works when this does not One file. No internet, no login, no this software running. For the morning something has to be produced and the computer is not cooperating.
- $5 a month, or $50 a year Up to 50 aircraft on either.
Look round a real shop first Start free
The demonstration shop is eleven real aircraft with a year of work behind them. No account needed.
The directive text above is reproduced from the Federal Register, a work of the United States government and in the public domain. The separation into applicability, compliance and required actions is TrackAD's.*1