Is AD E8-20498 a recurring Airworthiness Directive?

No — AD E8-20498 is a one-time directive. Verify it was complied with in the aircraft's records.

Which aircraft does AD E8-20498 apply to?

AD E8-20498 applies to Rolls-Royce Plc Rb211-524. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive E8-20498

one-time

AD E8-20498 · 2008-09-08 · turbine engine

Airworthiness Directives; Rolls-Royce plc RB211-524 Series Turbofan Engines; Correction

What this AD requires

This document makes a correction to Airworthiness Directive (AD) 2008-16-18. That AD applies to Rolls-Royce (RR) RB211-524 series turbofan engines with certain high pressure (HP) turbine disks installed. That AD was published in the Federal Register on August 11, 2008 (73 FR 46550). Paragraph (c) in the regulatory section is incorrect. This document corrects that paragraph. In all other respects, the original document remains the same.

Which aircraft AD E8-20498 applies to

MakesRolls-Royce Plc Rb211-524

with certain high pressure (HP) turbine disks installed

Whether AD E8-20498 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 E8-20498 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.