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Airworthiness Directive

AD 2001-04-05 66 FR 12723 Active

Federal Aviation Administration · 14 CFR part 39

Requires rewiring the KLN- 90B GPS to eliminate the possibility of inconsistent NAV "FLAG" displays.

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FR document
01-4049
Amendment
39-12123
Published
2001-02-28
Effective
2001-04-09
Models covered
1

Last live check: 2026-10-04

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AD

2001-04-05

FR doc 01-4049 · 66 FR 12723

AD 2001-04-05Published 2001-02-28Effective 2001-04-09

FAA rule - 14 CFR 39

FAA rule. Compliance with an applicable AD is required under 14 CFR 39.7. Check its effective date, applicability, compliance times and current status.

Requires rewiring the KLN- 90B GPS to eliminate the possibility of inconsistent NAV "FLAG" displays.

Full official abstract

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.

More directives for Beechcraft 1900

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  2. AD 2013-24-03 Airworthiness Directives; Beechcraft Corporation Airplanes Effective 2014-01-13
  3. AD 2011-27-51 Airworthiness Directives; Hawker Beechcraft Corporation Models 1900, 190... Effective 2012-01-18
  4. AD 2009-23-03 Airworthiness Directives; Hawker Beechcraft Corporation (Type Certificat... Effective 2009-12-14
  5. AD 2009-23-01 Airworthiness Directives; Hawker Beechcraft Corporation Model 1900, 1900... Effective 2009-12-08

All Beechcraft 1900 directives

View on Federal Register (opens in a new tab) View this AD in FAA DRS (opens in a new tab) Print AD packet (opens the full Federal Register document in a new tab)

Applies to 1 model in our index