Airworthiness directives › 2022-25-06
AD 2022-25-06 Airworthiness Directives; De Havilland Aircraft of Canada Limited (Type Certificate Previously Held by Bombardier, Inc.) Airplanes
Models named: DHC-8-402. Read the applicability below — it usually turns on serial or part numbers too.
Applicability*9
This AD applies to De Havilland Aircraft of Canada Limited (Type Certificate previously held by Bombardier Inc.) Model DHC-8-402 airplanes, certificated in any category, serial numbers 4095 through 4633 inclusive.
Compliance
Comply with this AD within the compliance times specified, unless already done.
Required actions
Within 8,000 flight hours or 48 months, whichever occurs first, from the effective date of this AD, do a modification to improve the IFC cooling capacity, in accordance with paragraph 3.B., “Procedure,” of the Accomplishment Instructions of De Havilland Aircraft of Canada Limited Service Bulletin 84-21-24, Revision B, dated Oct 13, 2021.
Unsafe condition
This AD was prompted by an investigation that found that the actual operating temperatures within the integrated flight cabinet (IFC) were significantly higher than anticipated during the certification. Consequently, the reliability of the IFC module does not meet safety objectives. The FAA is issuing this AD to address the high operating temperatures within the IFC, which could lead to uncontrolled autopilot pitch trim servo runaway and failure of the stall warning and stick pusher, resulting in reduced controllability of the airplane.
Affected ADs
None.
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