Airworthiness directives › 2022-05-11
AD 2022-05-11 Airworthiness Directives; Viking Air Limited (Type Certificate Previously Held by Bombardier Inc.) Airplanes
Models named: DHC-3. Read the applicability below — it usually turns on serial or part numbers too.
Applicability*9
This AD applies to Viking Air Limited (type certificate previously held by Bombardier Inc.) Model DHC-3 airplanes, all serial numbers, certificated in any category, with a wing strut assembly part number (P/N) C3W100 (all dash numbers) installed.
Compliance
Comply with this AD within the compliance times specified, unless already done.
Required actions
(1) For airplanes that have not been modified with Supplemental Type Certificate (STC) SA00438NY: Before each wing strut assembly P/N C3W100 accumulates 20,000 hours total time-in-service (TIS) or within 30 days after the effective date of this AD, whichever occurs later, remove the wing strut assembly P/N C3W100 from service and replace with a new (zero hours TIS) part. Thereafter, remove each wing strut assembly P/N C3W100 from service and replace with a new (zero hours TIS) part before accumulating 20,000 hours total TIS. (2) For airplanes with a wing strut assembly P/N C3W100 with more than 2,500 hours total TIS on the effective date of this AD, regardless of whether the airplane has been modified with STC SA00438NY: Within 30 days after the effective date of this AD, inspect the wing strut assembly and attachment hardware for cracks, corrosion, and damage, in accordance with the Accomplishment Instructions in Viking DHC-3 Otter Alert Service Bulletin No. V3/0011, Revision NC, dated November 26, 2019, except you are not required to contact Viking. (3) For all affected airplanes: Within 30 days after completing the inspection required by paragraph (g)(2) of this AD or within 30 days after the effective date of this AD, whichever occurs later, report the results of the inspection to Viking using the inspection reply form in Viking DHC-3 Otter Alert Service Bulletin No. V3/0011, Revision NC, dated November 26, 2019.
Unsafe condition
This AD was prompted by mandatory continuing airworthiness information (MCAI) originated by an aviation authority of another country to identify and correct an unsafe condition on an aviation product. The MCAI identifies the unsafe condition as fatigue damage of the wing struts. The FAA is issuing this AD to prevent failure of a wing strut. The unsafe condition, if not addressed, could result in an in-flight breakup of the wing.
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