Airworthiness Directive 2018-23-04
one-timeAirworthiness Directives; Bombardier, Inc., Airplanes
What this AD requires
We are adopting a new airworthiness directive (AD) for certain Bombardier, Inc., Model DHC-8-102, -103, and -106 airplanes; Model DHC- 8-200 series airplanes; and Model DHC-8-300 series airplanes. This AD was prompted by a report that a certain modification to the auto relight system is incompatible with a certain beta lockout system modification and could result in de-activation of the auto ignition feature of the No. 2 engine. This AD requires an inspection of the auto ignition system and applicable rectification. We are issuing this AD to address the unsafe condition on these products.
Which aircraft AD 2018-23-04 applies to
Sliced applicability text was truncated/malformed in the source (captured the Comments/Costs-of-Compliance discussion rather than the formal (c)-paragraph applicability clause). Source SUMMARY section identifies Bombardier, Inc. Model DHC-8-102, -103, and -106 airplanes; Model DHC-8-200 series airplanes; and Model DHC-8-300 series airplanes. AD addresses an auto ignition system inspection/rectification per Bombardier SB 8-74-07, dated April 13, 2016 (auto-relight/beta lockout system incompatibility affecting the No. 2 engine); estimated to affect 185 U.S.-registered airplanes.
Whether AD 2018-23-04 actually applies to your aircraft (by serial and installed parts) and whether it’s already complied with comes from that aircraft’s records.
How AD compliance is recorded
A valid compliance record (14 CFR 43.9) states:
Tailplate reads a tail number’s logbooks and matches every applicable AD — including this one — to its compliance evidence, with recurring next-due dates computed.
Look up a tail number →Read the full directive (Federal Register)Applicability is derived from the FAA directive corpus and is advisory, not a legal airworthiness determination. Compliance is established only from an aircraft’s actual records.