FAA Continues Boeing 737 Wiring
part of the Federal Aviation Administration's (FAA)
continuing efforts to ensure fuel tank safety, the
Federal Aviation Administration (FAA) is ordering
airlines to inspect, within 60 days, fuel boost pump
wiring on Boeing 737-100 through -500 series aircraft
with 20,000 to 30,000 flight hours.
The inspections are necessary to ensure that the aircraft
do not have a problem with chafing and electrical arcing
between the fuel boost pump wiring and the surrounding
conduit. The directive also requires the addition of a
layer of Teflon sleeving to protect the fuel pump wires.
There are 1,131 Boeing 737s the U.S. fleet, 2,866 in
worldwide. The FAA estimates that 215 U.S.-registered
737s, with 20,000 to 30,000 total flight hours, would be
affected by this AD. The aircraft are operated by most
major U.S. airlines. The estimated cost per aircraft is
$1,800. The inspection notices do not affect newer
generation Boeing 737 models - the 737-600, -700, an -800
- because they do not have electrical wires running
through conduits within fuel tanks.
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