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Airworthiness Directive 2001-01-01

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Official AD 2001-01-01 · FR doc 01-917 · 2001-01-16 · turbine engine

Airworthiness Directives; BMW Rolls-Royce GmbH Models BR700-710A1-10 and BR700-710A2-20 Turbofan Engines.

What this AD requires

This amendment adopts a new airworthiness directive (AD) that is applicable to BMW Rolls-Royce (RR) GmbH models BR700-710A1-10 and BR700-710A2-20 turbofan engines with oil filter differential pressure switch part number (P/N) 21SN04-419 or P/N 21SN04-431 installed. This action requires inspections of oil filter differential pressure switches, and replacement if necessary, in accordance with Rolls-Royce Service Bulletin No. SB-BR700-79-900215, Revision 2, dated August 2, 2000. This amendment is prompted by a report of severe engine oil loss, caused by oil leakage from a defective oil filter differential pressure switch. The actions specified in this AD are intended to prevent defective oil filter differential pressure switches from causing severe engine oil loss, resulting in in-flight shutdowns.

Which aircraft AD 2001-01-01 applies to

MakesRolls-Royce
ModelsBR700
Part-conditional — 21SN04-419, 21SN04-431.

Applies to oil filter differential pressure switches per Rolls-Royce Service Bulletin SB-BR700-79-900215, Revision 2, dated August 2, 2000; switches with serial numbers listed in Appendix 1 of that SB must be marked, all others must be replaced with a serviceable switch (P/N 21SN04-419 or 21SN04-431 with orange stripe) within 50 or 150 flight hours depending on hours-since-new (<200 or >=200). Specific BR700 variant not stated in the extracted applicability text.

Whether AD 2001-01-01 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 2001-01-01 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.