Airworthiness Directive · Amendment 39-21548 · Cabin equipment/furnishings
Airbus Helicopters Deutschland GmbH Helicopters
This AD applies to Airbus Helicopters Deutschland GmbH Model MBB-BK 117 C-2 and Model MBB-BK 117 D-2 helicopters, certificated in any category, all manufacturer serial numbers, except the Model MBB-BK117 C-2(e) configuration.
Note 1 to paragraph (c): Model MBB-BK117 C-2 helicopters utilizing a Garmin 500H flight display system are designated by EASA as Model MBB-BK117 C-2e variants of the Model BK 117 C-2 helicopters, and by the FAA as a Model MBB-BK117 C-2(e) configuration.
The FAA is adopting a new airworthiness directive (AD) for all Airbus Helicopters Deutschland GmbH Model MBB-BK 117 C-2 and Model MBB- BK 117 D-2 helicopters. This AD was prompted by a determination that a life limit for the adapter forward (FWD) of the outboard load system, repetitive inspections of other components of that system, and for certain helicopters, a modification of the outboard load system, are necessary to address the unsafe condition. This AD requires a modification of the outboard load system for certain helicopters, repetitive inspections of the outboard load system and its components for any defect (including cracking, damage, corrosion, and incorrect installation) and applicable corrective actions, and implementation of a new life limit for the FWD adapter, as specified in a European Aviation Safety Agency (now European Union Aviation Safety Agency) (EASA) AD, which is incorporated by reference. The FAA is issuing this AD to address the unsafe condition on these products.
Except as specified in paragraph (h) of this AD: Comply with all required actions and compliance times specified in, and in accordance with, European Aviation Safety Agency (now European Union Aviation Safety Agency) (EASA) AD 2017-0177, dated September 14, 2017 (EASA AD 2017-0177).
(1) Where EASA AD 2017-0177 refers to its effective date, this AD requires using the effective date of this AD.
(2) The “Remarks” section of EASA AD 2017-0177 does not apply to this AD.
(3) Where the service information referenced in EASA AD 2017-0177 specifies contacting the applicable manufacturer of the dedicated equipment for a definition of a cycle and recalculation to hoist cycles, this AD does not require contacting the manufacturer for a definition of a cycle and recalculation to hoist cycles.
(4) Where paragraph (3) of EASA AD 2017-0177 specifies to do “applicable corrective actions,” for this AD, if there are any defective components, replace all defective components with serviceable components in accordance with FAA-approved procedures. For the purposes of this AD, a defect may be indicated by cracking, damage, corrosion, or incorrect installation.
(5) Although the service information referenced in EASA AD 2017-0177 specifies to discard certain parts, this AD requires removing those parts from service instead.
(6) Where the service information referenced in EASA AD 2017-0177 refers to flight hours (FH), this AD requires using hours time-in-service.
(7) Paragraph (9) of EASA AD 2017-0177 does not apply to this AD.
The aircraft, engines and makers this AD names, by the model designations in its text. A model listed here may still be outside the AD's serial ranges.
