Is AD 2013-14848 a recurring Airworthiness Directive?

No — AD 2013-14848 is a one-time directive. Verify it was complied with in the aircraft's records.

Which aircraft does AD 2013-14848 apply to?

AD 2013-14848 applies to Eurocopter Deutschland — models BK117 C-2, BK117. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 2013-14848

one-time

AD 2013-14848 · 2013-07-16 · airframe

Airworthiness Directives; Eurocopter Deutschland GmbH Helicopters

What this AD requires

We are adopting a new airworthiness directive (AD) for Eurocopter Deutschland GmbH (Eurocopter) Model MBB-BK 117 C-2 helicopters. This AD requires determining if a certain serial-numbered bevel gear is installed in the tailrotor intermediate gear box (IGB). If such a bevel gear is installed in the IGB, this AD requires recording the bevel gear's reduced life limit in the Airworthiness Limitations section of the maintenance manual and on the component history card or equivalent IGB record. If the bevel gear's life limit has been reached or exceeded, this AD requires, before further flight, replacing the bevel gear with an airworthy bevel gear. This AD is prompted by the discovery that the tooth foot fillets in certain bevel gears fall below the minimum dimensions required in the design documents to ensure safe functioning of the bevel gear until it reaches its approved life limit. This AD's actions are intended to prevent failure of a bevel gear before it reaches its currently approved life limit, failure of the IGB, and subsequent loss of helicopter control.

Which aircraft AD 2013-14848 applies to

MakesEurocopter Deutschland

ModelsBK117 C-2, BK117

Part-conditional — 4639 310 065, 4639 002 007.

Applies only to helicopters with bevel gear P/N 4639 310 065 installed in the tail rotor intermediate gearbox (IGB) P/N 4639 002 007.

Whether AD 2013-14848 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 2013-14848 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.