Adoption of the Amendment
Accordingly, under the authority delegated to me by the Administrator, the FAA amends 14 CFR part 39 as follows:
PART 39--AIRWORTHINESS DIRECTIVES
0 1. The authority citation for part 39 continues to read as follows:
Authority: 49 U.S.C. 106(g), 40113, 44701.
Sec. 39.13 [Amended]
0 2. The FAA amends Sec. 39.13 by adding the following new airworthiness directive (AD):
2019-16-15 Pratt & Whitney: Amendment 39-19718; Docket No. FAA-2019- 0365; Product Identifier 2019-NE-12-AD.
(a) Effective Date
This AD is effective October 1, 2019.
(b) Affected ADs
None.
(c) Applicability
This AD applies to Pratt & Whitney (PW) PW1519G, PW1521G, PW1521GA, PW1524G, PW1525G, PW1521G-3, PW1524G-3, PW1525G-3, PW1919G, PW1921G, PW1922G, PW1923G, and PW1923G-A model turbofan engines.
(d) Subject
Joint Aircraft System Component (JASC) Code 7230, Turbine Engine Compressor Section.
(e) Unsafe Condition
This AD was prompted by corrosion found on the high-pressure compressor (HPC) front hub, which could result in certain HPC front hubs cracking before reaching their published life limit. The FAA is issuing this AD to prevent failure of the HPC front hub. The unsafe condition, if not addressed, could result in uncontained release of the HPC front hub, damage to the engine, and damage to the airplane.
(f) Compliance
Comply with this AD within the compliance times specified, unless already done.
(g) Required Action
Within 90 days after the effective date of this AD, revise the Airworthiness Limitations Section of the PW Instructions for Continued Airworthiness, and for air carrier operations, the approved continuous airworthiness maintenance program, with the following maximum cycle limits for HPC front hub, part number 30G3210.
(1) For PW PW1519G, PW1521G, PW1521GA, PW1524G, PW1525G, PW1521G-3, PW1524G-3, and PW1525G-3 model turbofan engines, use the cycle limits established in Table 3, Revision to Table of Limits, of PW Service Bulletin (SB) PW1000G-A-72-00-0109-00A-930A-D, Issue No. 001, dated April 2, 2019.
(2) For PW PW1919G, PW1921G, PW1922G, PW1923G, and PW1923G-A model turbofan engines, use the cycle limits established in Table 3, Revision to Table of Limits, of PW SB PW1000G-A-72-00-0058-00B-930A- D, Issue No. 002, dated May 10, 2019.
(h) Alternative Methods of Compliance (AMOCs)
(1) The Manager, ECO Branch, FAA, has the authority to approve AMOCs for this AD, if requested using the procedures found in 14 CFR 39.19. In accordance with 14 CFR 39.19, send your request to your principal inspector or local Flight Standards District Office, as appropriate. If sending information directly to the manager of the certification office, send it to the attention of the person identified in paragraph (i) of this AD. You may email your request to:
[email protected].
(2) Before using any approved AMOC, notify your appropriate principal inspector, or lacking a principal inspector, the manager of the local flight standards district office/certificate holding district office.
(i) Related Information
For more information about this AD, contact Kevin M. Clark, Aerospace Engineer, ECO Branch, FAA, 1200 District Avenue, Burlington, MA 01803; phone: 781-238-7088; fax: 781-238-7199; email:
[email protected].
(j) Material Incorporated by Reference
(1) The Director of the Federal Register approved the incorporation by reference (IBR) of the service information listed in this paragraph under 5 U.S.C. 552(a) and 1 CFR part 51.
(2) You must use this service information as applicable to do the actions required by this AD, unless the AD specifies otherwise.
(i) Pratt & Whitney (PW) Service Bulletin (SB) PW1000G-A-72-00- 0109-00A-930A-D, Issue No. 001, dated April 2, 2019.
(ii) PW SB PW1000G-A-72-00-0058-00B-930A-D, Issue No. 002, dated May 10, 2019.
(3) For PW service informationidentified in this AD, contact Pratt & Whitney, 400 Main Street, East Hartford, CT 06118; phone: 800-565-0140; fax: 860-565-5442; email:
[[Page 44683]]
[email protected]; internet: http://fleetcare.pw.utc.com.
(4) You may view this service information at FAA, Engine and Propeller Standards Branch, 1200 District Avenue, Burlington, MA 01803. For information on the availability of this material at the FAA, call 781-238-7759.
(5) You may view this service information that is incorporated by reference at the National Archives and Records Administration (NARA). For information on the availability of this material at NARA, call 202-741-6030, or go to: http://www.archives.gov/federal-register/cfr/ibr-locations.html.
