Airworthiness Directive 2017-18-16
one-timeAirworthiness Directives; The Boeing Company Airplanes
What this AD requires
We are adopting a new airworthiness directive (AD) for certain The Boeing Company Model 737-700 and -700C series airplanes. This AD was prompted by a report that, for certain airplanes, the nose-up pitch trim limit and associated warning will allow the horizontal stabilizer position to be set outside acceptable limits for a mis-trimmed takeoff condition. This AD requires, depending on airplane configuration, replacing certain pitch trim light plates, relocating certain position warning horn switches, revising certain software, removing a certain placard, and doing related investigative and corrective actions if necessary. We are issuing this AD to address the unsafe condition on these products.
Which aircraft AD 2017-18-16 applies to
Extracted text is FAA response-to-comments discussion, not a clean applicability paragraph. Concerns Boeing Model 737 airplanes potentially affected by an Aviation Partners Boeing blended-winglet STC (ST00830SE) per Aviation Partners Boeing Service Bulletins AP737-34-005 and AP737-27-002 Revision 2, and Boeing Alert Service Bulletin 737-27A1306; specific airplane line numbers 384 and 3128 are discussed as affected by these service bulletins.
Whether AD 2017-18-16 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.