Honeywell Navigation Units using Cycle 1001 databases
- Published
AI-generated summary of the official EASA document. Verify against the PDF before acting.
What to do
Operators should consult the Honeywell Urgent Safety Letter and access updated Cycle 1001 databases from the Bendix/King website. They should replace any affected databases downloaded or received before January 12, 2010, to avoid navigation errors. For further assistance, contact the FAA Wichita Aircraft Certification Office as provided in the bulletin.
Summary
The FAA Special Airworthiness Information Bulletin SAIB: CE-10-14 addresses an airworthiness concern related to Honeywell/Bendix King navigation units including models KLN 35A, KLN 88, KLN 89, KLN 89B, KLN 90, KLN 90A, KLN 90B, KLN 94, KLX 100, KLX 135, KLX 135A, and KLN 900. The bulletin informs operators about incorrect dynamic magnetic variation data contained in Cycle 1001 navigation databases distributed from January 14, 2010. This issue affects navigation accuracy for terminal and en route waypoint records.
What changed
The bulletin highlights that Cycle 1001 databases downloaded or received before January 12, 2010, contain erroneous dynamic magnetic variation data. Honeywell issued an Urgent Safety Letter to correct this data error and provided updated service information and resources online. This bulletin introduces awareness and guidance for addressing the database error rather than mandating regulatory action.
Why it matters
Incorrect magnetic variation data can cause misleading navigation information, increasing pilot workload and potential confusion in the cockpit. Aviation professionals, including operators and maintenance teams, must be aware of this issue to ensure navigation accuracy and maintain flight safety. Timely updates and corrections to navigation databases are critical for compliance and operational reliability.
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