Is AD 2001-04-05 a recurring Airworthiness Directive?

No — AD 2001-04-05 is a one-time directive. Verify it was complied with in the aircraft's records.

Which aircraft does AD 2001-04-05 apply to?

AD 2001-04-05 applies to Raytheon. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 2001-04-05

one-time

Official AD 2001-04-05 · FR doc 01-4049 · 2001-02-28 · airframe

Airworthiness Directives; Raytheon Aircraft Company Beech Model 1900D Airplanes

What this AD requires

This amendment adopts a new airworthiness directive (AD) that applies to certain Raytheon Aircraft Company (Raytheon) Beech Model 1900D airplanes that are equipped with a KLN-90B Global Positioning System (GPS) incorporated in accordance with AlliedSignal Supplemental Type Certificate (STC) SA00245WI-D. This AD requires rewiring the KLN- 90B GPS to eliminate the possibility of inconsistent NAV "FLAG" displays. This AD is the result of an instance where the copilot's NAV "FLAG" display was based on the pilot's NAV source validity. The actions specified by this AD are intended to assure that the copilot's NAV "FLAG" displays are based on the copilot's selected NAV source. Inconsistent NAV "FLAG" displays could cause the copilot to make decisions based on an invalid GPS source without knowing it was invalid.

Which aircraft AD 2001-04-05 applies to

MakesRaytheon

Applies to each airplane identified in paragraph (a) of this AD (specific affected models not included in this excerpt); compliance per Raytheon Mandatory Service Bulletin SB 34-3222, Issued January 2000.

Whether AD 2001-04-05 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:

Method of compliance — The specific action taken (inspected, replaced, modified) and to what revision.

Date — When the work was done.

Aircraft time — Total time in service / tach at compliance — how recurring next-due is computed.

Signature & certificate — The A&P/IA who returned it to service, with certificate number.

Is AD 2001-04-05 complied with on your aircraft?

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.