Airworthiness Directive · Amendment 39-18488 · Engines
The Boeing Company Airplanes
This AD applies to The Boeing Company Model 787-8 and 787-9 airplanes, certificated in any category, powered by General Electric (GE) GEnx-1B engines.
We are adopting a new airworthiness directive (AD) for The Boeing Company Model 787-8 and 787-9 airplanes powered by General Electric (GE) GEnx-1B engines. This AD requires revising the airplane flight manual (AFM) to provide the flight crew a revised fan ice removal procedure and a new associated mandatory flight crew briefing to reduce the likelihood of engine damage due to fan ice shedding. This AD also removes certain dispatch relief. For airplanes with certain engines, this AD also requires reworking or replacing at least one engine. This AD was prompted by a recent engine fan blade rub event that caused an in-flight non-restartable power loss. We are issuing this AD to prevent susceptibility to heavy fan blade rubs, which could result in engine damage and a possible in-flight non-restartable power loss of one or both engines.
Within 7 days after the effective date of this AD, revise the Certificate Limitations chapter of the applicable Boeing 787 AFM to include the statement provided in figure 1 to paragraph (g) of this AD. This may be done by inserting a copy of this AD into the AFM. Once accomplished, the AFM revision required by this paragraph terminates the requirements of paragraph (g) of AD 2016-06-08, and the AFM revision required by paragraph (g) of AD 2016-06-08 must be removed from the AFM.
Within 7 days after the effective date of this AD, revise the Operating Procedures chapter of the Boeing 787 AFM to include the statement provided in figure 2 to paragraph (h) of this AD. This may be done by inserting a copy of this AD into the AFM. Once accomplished, the AFM revision required by this AD terminates the requirements of paragraph (h) of AD 2016-06-08, and the AFM revision required by paragraph (h) of AD 2016-06-08 must be removed from the AFM.
As of 7 days after the effective date of this AD: Notwithstanding the provisions of the operator's minimum equipment list (MEL), dispatch of an airplane is prohibited unless the equipment specified in paragraph (i)(1) and (i)(2) is operational.
(1) At least one Engine Anti-Ice (EAI) Indication.
(2) At least one Ice Detector.
For an airplane powered by two engines having any model number GEnx-1B64/P2, -1B67/P2, -1B70/P2, -1B70C/P2, -1B70/75/P2, or -1B74/75/P2, and any GEnx engine assembly part number 2447M10G01 or 2447M10G02: Before October 1, 2016, do the actions specified by paragraph (j)(1) or (j)(2) of this AD.
(1) Rework at least one engine in accordance with paragraph 3.B. or 3.C. of the Accomplishment Instructions of GE GEnx-1B Service Bulletin 72-0309 R00, dated March 11, 2016; or paragraph 3.B. or 3.C. of the Accomplishment Instructions of GE GEnx-1B Service Bulletin 72-0314 R00, dated April 1, 2016. Although GE GEnx Service Bulletins GEnx-1B 72-0314 R00, dated April 1, 2016; and GEnx-1B 72-0309 R00, dated March 11, 2016; specify submitting certain tip clearance measurements to GE, no report is required by this AD.
(2) Remove at least one engine and replace with an engine that is eligible for installation that is not identified in the introductory text to paragraph (j) of 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.
Aircraft
