Not related to wheel collapse at all, but on a
similar topic, I found this article:
FAA Orders Airlines to Check for Damaged Bolts
The Associated Press
W A S H I N G T O N, May 19 - The Federal
Aviation Administration late Thursday directed
that 120 Boeing 767 aircraft undergo
emergency inspections after airline mechanics
found damaged bolts in the engine pylons of
one of the planes.
Under the directive, airlines must conduct
the inspections within five to 10 days. The
jetliners were considered to be safe for flight
and are not being grounded.
It was unclear Thursday whether the
inspections, which take about five hours,
would disrupt any flights.
The FAA said seven U.S. airlines, including
two cargo carriers, were affected by the order.
Damaged Bolts Found
The FAA issued the order after damaged bolts
were found on the engine mounts of one of the
Boeing 767 aircraft, said the agency. The
airline was not identified.
The inspections have to be made within
either five or 10 days, depending on when the
specific jetliner was manufactured, said FAA
spokeswoman Alison Duquette.
The U.S. carriers affected by the order are
American Airlines, Delta Air Lines, Trans
World Airlines, United Airlines, US Airways,
and UPS and Airborne Express.
Many Inspections Under Way
The directive applies to 230 Boeing 767s
operating worldwide. However, the FAA can
only require the inspection on U.S. carriers.
Other countries normally follow the U.S. lead
in such inspection orders.
Many of the 767 operators have already
begun inspections based on information from
Boeing and the FAA, Duquette said.
The FAA order was issued after an
inspection of a Boeing 767-200 found damage
in three of four bolts holding one of the plane's
engine onto the pylon and wing.
"What we found was one report of one
aircraft that had one cracked and two fractured
bolts on the forward pylon" holding the engine
onto the wing, said Duquette. She did not
name the airline involved.
The Boeing 767 is a two-engine aircraft
and is certified to continue to fly on one engine
The damaged bolts were made of a
material, H-11 steel and appeared to have
been unusually corroded. Duquette said
inspectors must look for these types of bolts
and replace them if found, or perform an
ultrasound inspection to ensure they are not