Airworthiness directives › 2022-04-07
AD 2022-04-07 Airworthiness Directives; General Electric Company Turbofan Engines
Applicability*9
This AD applies to all General Electric Company (GE) GEnx-1B64, GEnx-1B64/P1, GEnx-1B64/P2, GEnx-1B67, GEnx-1B67/P1, GEnx-1B67/P2, GEnx-1B70, GEnx-1B70/75/P1, GEnx-1B70/75/P2, GEnx-1B70/P1, GEnx-1B70/P2, GEnx-1B70C/P1, GEnx-1B70C/P2, GEnx-1B74/75/P1, GEnx-1B74/75/P2, GEnx-1B76/P2, GEnx-1B76A/P2, GEnx-2B67, GEnx-2B67B, and GEnx-2B67/P model turbofan engines with: (1) A fuel metering unit (FMU) VIN 8062-1094 part number (P/N) 2122M20P07, VIN 8062-1176 P/N 2122M20P08, VIN 8062-1106 P/N 2459M17P01, or VIN 8062-1177 P/N 2459M17P02, installed; and (2) An FMU having a serial number (S/N) identified in Paragraph 4, Appendix A, Table 1, of either GE GEnx-1B Service Bulletin (SB) 73-0100 R00, dated December 3, 2021 (GEnx-1B SB 73-0100), or GE GEnx-2B SB 73-0092 R00, dated December 3, 2021 (GEnx-2B SB 73-0092).
Compliance
Comply with this AD within the compliance times specified, unless already done.
Required actions
(1) Within 150 flight cycles after the effective date of this AD, perform either an on-wing or off-wing shim check inspection using a 0.005 inch feeler gauge of the FMU BPV plug to verify the FMU BPV plug is properly installed using the Accomplishment Instructions, paragraph 3.A.(4) or paragraph 3.B.(3), of GEnx-1B SB 73-0100 (for GEnx-1B models) or the Accomplishment Instructions, paragraph 3.A.(4) or paragraph 3.B.(3), of GEnx-2B SB 73-0092 (for GEnx-2B models), as applicable. Perform the shim check inspection on any flat side of the FMU BPV plug. (2) If, during the inspection required by paragraph (g)(1) of this AD, the 0.005 inch feeler gauge can fit between the FMU BPV plug and the FMU housing on the flat side, before further flight, remove the FMU and replace with an FMU eligible for installation.
Unsafe condition
This AD was prompted by an in-flight shutdown (IFSD) of an engine and subsequent investigation by the manufacturer that revealed an improperly torqued FMU bypass valve (BPV) plug. The FAA is issuing this AD to prevent fuel system leakage from the FMU. The unsafe condition, if not addressed, could result in the loss of engine thrust control, IFSD, and reduced control of the aircraft.
Affected ADs
None.
Read the original on the Federal Register →
You just looked this one up by hand
TrackAD holds all 12,278 of them and matches them against the aircraft you actually look after — airframe, engine, propeller and appliances in one pass — then works out what falls due and when.
- Bring your existing list in from a spreadsheet Paste the rows straight out of Excel. Headers like C/W Date and N/A are read for you.
- A copy that works when this does not One file. No internet, no login, no this software running. For the morning something has to be produced and the computer is not cooperating.
- $5 a month, or $50 a year Up to 50 aircraft on either.
Look round a real shop first Start free
The demonstration shop is eleven real aircraft with a year of work behind them. No account needed.
The directive text above is reproduced from the Federal Register, a work of the United States government and in the public domain. The separation into applicability, compliance and required actions is TrackAD's.*1