Is AD 56-20-03 a recurring Airworthiness Directive?

No — AD 56-20-03 is a one-time directive. Verify it was complied with in the aircraft's records.

Which aircraft does AD 56-20-03 apply to?

AD 56-20-03 applies to Scott'S-Bell 47, Inc. — models 47B, 47B3, 47D, 47D1, 47G, 47G-2, 47H-1, 47. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 56-20-03

one-time

AD 56-20-03 · 1956-01-01 · appliance

Airworthiness Directives; with new retention bolts of the same part number. (Bell Mandatory Service Bulletin No. 112 dated August 8, 1956, covers this same

Which aircraft AD 56-20-03 applies to

MakesScott'S-Bell 47, Inc.

Models47B, 47B3, 47D, 47D1, 47G, 47G-2, 47H-1, 47

Applies to Bell Model 47B, 47B3, 47D, 47D1, 47G, 47G-2, and 47H-1 helicopters; replace retention bolts with new bolts of the same part number, per Bell Mandatory Service Bulletin No. 112 dated August 8, 1956 (specific part number and retained-component identity truncated in source text).

Whether AD 56-20-03 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 56-20-03 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 →

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.