Airworthiness Directive · Amendment 39-17859 · -13-p
Airbus Helicopters (Previously Eurocopter France) (Airbus Helicopters) Helicopters
This AD applies to Model EC225LP helicopters with a tangential gearbox, part number (P/N) 200181 or 704A34112012, installed, certificated in any category.
We are adopting a new airworthiness directive (AD) for Airbus Helicopters Model EC225LP helicopters to require measuring the operating load of the cockpit fuel shut-off controls and replacing the tangential gearbox if the operating load threshold is exceeded. This AD was prompted by the jamming of the left-hand (LH) side of the fuel shut-off and general cut-off controls (controls). The actions of this AD are intended to prevent the jamming of the controls so that a pilot can shut down an engine during an engine fire or during an emergency landing.
You are responsible for performing each action required by this AD within the specified compliance time unless it has already been accomplished prior to that time.
(1) Within 15 hours time-in-service or 7 days, whichever occurs first, measure the operating load of each cockpit fuel shut-off control.
(i) If the operating load is more than 3 daN (6.74 ft-lb), before further flight, lubricate each tangential gearbox and measure the operating load of each cockpit fuel shut-off control.
(ii) If the operating load is less than or equal to 3 daN (6.74 ft-lb), within 6 months, lubricate each tangential gearbox and measure the operating load of each cockpit fuel shut-off control.
(iii) If the operating load is more than 3 daN (6.74 ft-lb) after lubricating the tangential gearbox, replace the affected tangential gearbox before the next flight.
(2) Before installing a tangential gearbox, P/N 200181 or 704A34112012, lubricate the upper and lower bearings.
