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2022-23-09: Turbine Engine Compressor Section, Turbine Section

FAA order 2022-23-09 is an airworthiness directive in force since January 17, 2023. The FAA's subject line: Turbine Engine Compressor Section, Turbine Section. It names the General Electric GE90-110B1, General Electric GE90-115B, General Electric GE90-90B, General Electric GE90 series engines: about 166 aircraft on the U.S. register today across them, though an order usually covers particular versions or serial numbers rather than every one. System: engine.

What it applies to as the FAA lists it

Kind of product: Engine
Makes: General Electric Company
Models: GE90-90B, GE90-94B, GE90-110B1, GE90-115B
Engine series: General Electric GE90-110B1 91 aircraft
General Electric GE90-115B 51 aircraft
General Electric GE90-90B 23 aircraft
General Electric GE90 series 1 aircraft

Dates and paperwork

In force since: January 17, 2023
Published: December 12, 2022 (signed November 1, 2022)
Docket: FAA-2022-0989
Status: Current
The FAA's document: Read the order on the FAA's site

The FAA's summary their words, unchanged

The FAA is adopting a new airworthiness directive (AD) for certain General Electric Company (GE) GE90-90B, GE90-94B, GE90-110B1, and GE90-115B model turbofan engines. This AD was prompted by a manufacturer investigation that revealed that certain high-pressure turbine (HPT) stage 1 disks, HPT stage 2 disks, and stages 7-9 compressor rotor spools were manufactured from powder metal material suspected to contain iron inclusion. This AD requires the replacement of the affected HPT stage 1 disks, HPT stage 2 disks, and stages 7-9 compressor rotor spools. The FAA is issuing this AD to address the unsafe condition on these products.

The order itself the regulatory text, as published

Show the full text (4,182 characters)

1. The authority citation for part 39 continues to read as follows: Authority: 49 U.S.C. 106(g), 40113, 44701. 2. The FAA amends § 39.13 by adding the following new airworthiness directive: 2022-23-09 General Electric Company: Amendment 39-22236; Docket No. FAA-2022-0989; Project Identifier AD-2022-00468-E. (a) Effective Date This airworthiness directive (AD) is effective January 17, 2023. (b) Affected ADs None. (c) Applicability This AD applies to General Electric Company GE90-90B, GE90-94B, GE90-110B1, and GE90-115B model turbofan engines with an installed high-pressure turbine (HPT) stage 1 disk, HPT stage 2 disk, or stages 7-9 compressor rotor spool with a part number (P/N) and serial number (S/N) identified in Table 1 to paragraph (c) of this AD. Table 1 to Paragraph ( c )-Affected HPT Stage 1 Disks, HPT Stage 2 Disks, and Stages 7-9 Compressor Rotor Spools Part name P/N S/N HPT stage 1 disk 1847M95G04 GWN0R5K4 HPT stage 2 disk 1711M47G13 TMT5N068 HPT stage 2 disk 1865M14P04 TMT5P744 TMT5P745 TMT5P749 TMT5P755 TMT5P762 Stages 7-9 compressor rotor spool 2032M23G02 GWN0R5M5 (d) Subject Joint Aircraft System Component (JASC) Code 7230, Turbine Engine Compressor Section; 7250, Turbine Section. (e) Unsafe Condition This AD was prompted by a manufacturer investigation that revealed that certain HPT stage 1 disks, HPT stage 2 disks, and stages 7-9 compressor rotor spools were manufactured from powder metal material suspected to contain iron inclusion. The FAA is issuing this AD to prevent fracture and potential uncontained failure of certain HPT stage 1 disks, HPT stage 2 disks, and stages 7-9 compressor rotor spools. The unsafe condition, if not addressed, could result in uncontained debris release, damage to the engine, and damage to the aircraft. (f) Compliance Comply with this AD within the compliance times specified, unless already done. (g) Required Actions (1) Before exceeding 400 flight cycles after the effective date of this AD, remove the affected HPT stage 1 disk, HPT stage 2 disk, and stages 7-9 compressor rotor spool from service and replace with a part eligible for installation. (2) For affected engines not in service, before further flight, remove the affected HPT stage 1 disk, HPT stage 2 disk, and stages 7-9 compressor rotor spool and replace with a part eligible for installation. (h) Definitions (1) For the purpose of this AD, a "part eligible for installation" is any HPT stage 1 disk, HPT stage 2 disk, or stages 7-9 compressor rotor spool with a P/N and S/N not identified in Table 1 to paragraph (c) of this AD. (2) For the purpose of this AD, "affected engines not in service" are affected engines that are in long-term or short-term storage as of the effective date of this AD. (i) Installation Prohibition After the effective date of this AD, do not install an HPT stage 1 disk, HPT stage 2 disk, or stages 7-9 compressor rotor spool with a P/N and S/N identified in Table 1 to paragraph (c) of this AD onto any engine. (j) 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 (k) of this AD and email to: ANE-AD-AMOC@faa.gov. (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. (k) Related Information For more information about this AD, contact Alexei Marqueen, Aviation Safety Engineer, ECO Branch, FAA, 1200 District Avenue, Burlington, MA 01803; phone: (781) 238-7178; email: Alexei.T.Marqueen@faa.gov . (l) Material Incorporated by Reference None. Issued on November 1, 2022. Christina Underwood, Acting Director, Compliance & Airworthiness Division, Aircraft Certification Service. [FR Doc. 2022-26831 Filed 12-9-22; 8:45 am]BILLING CODE 4910-13-P

Source: FAA Dynamic Regulatory System, airworthiness directives. The FAA's document is the authority; the register counts are this site's, from the FAA register of October 5, 2026. Connections as data: /graph/directive/2022-23-09.json · aircraft systems.