Is AD 2001-14-51 a recurring Airworthiness Directive?

No — AD 2001-14-51 is a one-time directive. Verify it was complied with in the aircraft's records.

Which aircraft does AD 2001-14-51 apply to?

AD 2001-14-51 applies to Ups Aviation Technologies, Inc. — models Apollo SL30. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 2001-14-51

one-time

Official AD 2001-14-51 · FR doc 01-18472 · 2001-07-25 · appliance

Airworthiness Directives; General Aviation Aircraft Equipped With Certain UPS Aviation Technologies, Inc., Model Apollo SL30 Very-High-Frequency Navigation/Communication (VHF NAV/COMM) Radios

What this AD requires

This document publishes in the Federal Register an amendment adopting airworthiness directive (AD) AD 2001-14-51 that was made available previously to all known U.S. owners and operators of General Aviation aircraft equipped with certain UPS Aviation Technologies, Inc., Model Apollo SL30 VHF NAV/COMM radios. This AD requires determination of the version of software being used by the UPS Aviation Technologies, Inc., Model Apollo SL30 VHF NAV/COMM radio, and installation of a placard to prohibit use of the radio's very-high- frequency omnirange (VOR) function for navigation, if necessary. This action is prompted by a report that, during installation of a subject radio, an installer noted that the radio was providing incorrect radial bearing information. The actions specified by this AD are intended to prevent use of incorrect bearing information by the pilot, which could result in inaccurate navigation information.

Which aircraft AD 2001-14-51 applies to

MakesUps Aviation Technologies, Inc.

ModelsApollo SL30

Part-conditional — 430-6040-300, 430-6040-301.

Applies to airplanes with a UPS Aviation Technologies Model Apollo SL30 VHF NAV/COMM radio installed; if the radio uses DSP Software Version 1.00, requires a placard prohibiting use of the SL30 VOR function for navigation and prohibits installing radios with these part numbers unless the AD requirements are met.

Whether AD 2001-14-51 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 2001-14-51 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.