Is AD 96-08-04 a recurring Airworthiness Directive?

No — AD 96-08-04 is a one-time directive. Verify it was complied with in the aircraft's records.

Which aircraft does AD 96-08-04 apply to?

AD 96-08-04 applies to Mbb, Eurocopter — models BO105. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 96-08-04

one-time

Official AD 96-08-04 · FR doc 96-9272 · 1996-04-17 · airframe

Airworthiness Directives; Eurocopter Deutschland GmbH (ECD) Model BO-105, BO-105A, BO-105C, BO-105S, and BO-105LS A-1 Helicopters

What this AD requires

This amendment adopts a new airworthiness directive (AD), applicable to Eurocopter Deutschland GmbH (ECD) (Eurocopter) Model BO- 105, BO-105A, BO-105C, BO-105S, and BO-105LS A-1 helicopters, that requires a ground test and inspection of the tandem hydraulic switch- over system (switch-over system) for component wear and parts replacement, if necessary. This amendment is prompted by incidents involving Model BO-105 series helicopters in which, during the switch- over from Hydraulic System 1 to Hydraulic System 2, a 3-inch drop in the collective occurred, caused by component wear in the switch-over system. The actions specified by this AD are intended to detect switch- over system component wear, which could result in a sudden drop in the collective and a sudden loss of altitude.

Which aircraft AD 96-08-04 applies to

MakesMbb Eurocopter

ModelsBO105

Within 50 hrs TIS and thereafter annually, conduct ground test of tandem hydraulic system and inspect switch-over system linkage for wear; if a switch-over reaction occurs during the test, perform additional inspection/maintenance. Per MBB-Helicopters Alert SB ASB-BO 105-40-102.

Whether AD 96-08-04 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 96-08-04 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.