Is AD 99-5728 a recurring Airworthiness Directive?

No — AD 99-5728 is a one-time directive. Verify it was complied with in the aircraft's records.

Which aircraft does AD 99-5728 apply to?

AD 99-5728 applies to Global Wulfsberg, Bendix/King — models GNS-Xl, GNS-Xls, GNS-X. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 99-5728

one-time

AD 99-5728 · 1999-03-10 · appliance

Airworthiness Directives; AlliedSignal Avionics, Inc. Models GNS- Xls and GNS-Xl Flight Management Systems

What this AD requires

This amendment revises Airworthiness Directive (AD) 97-05-03, which currently requires inserting a limitation into the Operations Limitation Section of the Airplane Flight Manual (AFM) or Flight Manual Supplement for all owners/operators of aircraft equipped with an AlliedSignal Avionics, Inc. (AlliedSignal) Models GNS-Xls or GNS-Xl global positioning systems (GPS) flight management system. The limitation specifies prohibiting the use of these AlliedSignal GPS units on previously published non-precision approaches. This AD is the result of AlliedSignal issuing service information that specifies procedures for accomplishing hardware and software modifications to the affected flight management systems. The Federal Aviation Administration (FAA) determined that accomplishment of the actions of the service bulletins should be considered as an alternative method of compliance to the actions of AD 97-05-03. This AD retains the actions of AD 97-05- 03, and incorporates the service bulletins into the AD, as an alternative method of compliance to the existing AD. The actions specified by this AD are intended to continue to prevent deviation from an intended flight path during a non-precision approach to an airport caused by inaccurate information from the GPS flight management system.

Which aircraft AD 99-5728 applies to

MakesGlobal WulfsbergBendix/King

ModelsGNS-Xl, GNS-Xls, GNS-X

Applies to aircraft with a GNS-Xl or GNS-Xls GPS flight management system installed; compliance via AFM/Flight Manual Supplement limitation insertion, or alternatively hardware/software modification per Global Wulfsberg Software Bulletin GNS-Xl-SW1 and Bendix/King Software Bulletin GNS-Xls-SW2 (Feb 1997).

Whether AD 99-5728 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 99-5728 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.