https://www.faa.gov/aircraft/safety/alerts/ --
http://rgl.faa.gov/Regulatory_and_Gu..._Emergency.pdf
https://ad.easa.europa.eu/ --
https://ad.easa.europa.eu/blob/2017-...S-2017-21-51_1
DATE: October 12, 2017
AD #: 2017-21-51
Emergency Airworthiness Directive (AD) 2017-21-51 is sent to owners and operators of Engine Alliance (EA) Model GP7200 series turbofan engines.
Background
This emergency AD was prompted by an uncontained engine failure that occurred on an Engine Alliance (EA) GP7270 turbofan engine. The failed engine had 3,527 cycles since new, which is a relatively high cycle engine. The actions specified in this AD are intended to prevent failure of the fan hub, which could lead to an uncontained release of the fan hub, damage to the engine, and damage to the airplane.
[...]
(g) Required Actions
(1) Perform a visual inspection of the fan hub, in accordance with
the Accomplishment Instructions, paragraph 1.B., 1.C., and 1.D., of EA Alert Service Bulletin (ASB) EAGP-A72-383, Revision 1, dated October 12, 017, at the times specified in paragraphs (g)(1)(i) through (iii) of this AD.
(i) For fan hubs with 3,500 cycles since new (CSN) or more, inspect within 2 weeks of the effective date of this AD.
(ii) For fan hubs with 2,000 CSN or greater and less than 3,500 CSN, inspect within 5 weeks of the effective date of this AD.
(iii) For fan hubs with less than 2,000 CSN, inspect within 8 weeks of the effective date of this AD.
(2) If defects or damage to the fan hub are found that are outside of serviceable limits, remove the hub from service and replace with a part that has been inspected and found airworthy in accordance with paragraph (g)(1) of this AD, prior to further flight. Serviceable limits are defined in the Accomplishment Instructions, Table 1 of EA ASB EAGP7-A72-383, Revision 1, dated October 12, 2017.
(h) Credit for Previous Actions
This paragraph provides credit for the actions required by paragraph (g) of this AD, if those actions were performed before the effective date of this AD, using EA ASB EAGP7-A72-383, dated October 7, 2017.
[..]
I suppose the Engine Alliance Alert Service Bulletin is not public?
P.S.: Andy Pasztor writes in the WSJ and on Fox Business: "requires inspections to start as quickly as two weeks, depending on the number of trips they have flown". "start" clearly should read "be completed". Reuters gets it right.
P.P.S.: From the Andy Pasztor article:
The same family of engines experienced an unrelated safety problem five years ago, prompting a previous FAA airworthiness directive.
In November 2012, an Emirates A380 departing Sydney had an engine shut down on its own at about 9,000 feet. The plane returned to the airport without any passengers injured. But a subsequent investigation by Australian authorities revealed that unexpectedly high temperatures stemming from a poorly designed nozzle resulted in significant internal damage.
Two years earlier, the engine manufacturer had issued a service bulletin calling for a replacement of the suspect parts with new, more durable components. Following the incident, the FAA issued a mandatory directive requiring inspections and removal of damaged parts.