Service difficulty report · Brace · Boeing 747422

Difficulty date
September 20, 1998
Submitted
March 26, 2000
Operation
Air carrier
Aircraft
N181UA
Make and model
Boeing 747422
Aircraft serial
25278
Engine
Pwa PW4056
Part
Brace
Part number
321U2731124
Condition
Gouged
Location
Nr 1 Pylon
Part time
4,382 hours
Stage of operation
IN
Nature of condition
E
Precautionary procedure
K

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

A .060 INCH DEEP GOUGE IN PYLON NUMBER ONE DIAGONAL BRACE. THE GOUGE IS 40 INCHES FORWARD OF AFT END OF DIAGONAL BRACE AND 1.74 INCHES LONG BY .5 INCH WIDE. CAUSED BY CONTACT WITH STEEL PNEUMATIC LINE. PYLON NUMBER ONE DIAGONAL BRACE REPLACED BEFORE FURTHER FLIGHT. NO SUCH CONDITION DETECTED ON THE OTHER THREE PYLON DIAGONAL BRACES. UAL ACFT WITH SIMILAR CONFIGURATION TO BE CHECKED FOR DAMAGE.