Is AD 01-24023 a recurring Airworthiness Directive?

No — AD 01-24023 is a one-time directive. Verify it was complied with in the aircraft's records.

Which aircraft does AD 01-24023 apply to?

AD 01-24023 applies to Rolls-Royce — models RB211. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 01-24023

one-time

AD 01-24023 · 2001-09-26 · turbine engine

Airworthiness Directives; Rolls-Royce plc. RB211 535 Turbofan Engines

What this AD requires

This amendment adopts a new airworthiness directive (AD) that is applicable to Rolls-Royce plc. (RR) models RB211-535C-37, RB211- 535E4-37, RB211-535E4-B-37, and RB211-535E4-B-75 turbofan engines, with radial drive steady bearing, part number (P/N) LK76084. This action requires the replacement of certain radial drive steady bearings, installed in the high speed gearbox drive. This amendment is prompted by five reports of radial drive steady bearing failures. The actions specified in this AD are intended to reduce the risk of engine in- flight shutdown, due to failure at low life of radial drive steady bearings.

Which aircraft AD 01-24023 applies to

MakesRolls-Royce

ModelsRB211

Part-conditional — LK76084, FB222165.

Applies conditionally based on which radial drive steady bearing part number is installed in the twin-engine airplane: engines with bearing P/N LK76084 (per hours-since-new thresholds) require replacement, generally with P/N FB222165, per Rolls-Royce SB RB.211-72-C925 Rev 2; other installed part numbers require no action.

Whether AD 01-24023 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 01-24023 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.