AD NUMBER: 2008-05-01
MANUFACTURER: General Electric
SUBJECT: Airworthiness Directive 2008-05-01 SUMMARY: The FAA is
adopting a new airworthiness directive (AD) for General Electric
Company (GE)CF34-8C1/-8C5/-8C5B1/-8E5/-8E5A1, and CF34-10E series
turbofan engines with certain part number (P/N) and serial number
(SN) fuel metering units (FMU) installed.
This AD requires a onetime test of the FMU for a miswired
(reversed polarity) condition of the input wires to the overspeed
This AD results from the discovery of miswired FMU overspeed
solenoids in the field.
We are issuing this AD to prevent the engine from failing to
shutdown during an overspeed which may lead to uncontained engine