Service difficulty report · Failsafe · Boeing 747422

Difficulty date
August 9, 2009
Submitted
August 13, 2009
Operation
Air carrier
Aircraft
N177UA
Make and model
Boeing 747422
Aircraft serial
24384
Aircraft time
79,596 hours, 9,804 cycles
Engine
Pwa PW4056
Part
Failsafe
Condition
Cracked
Location
Bs 1140 S10l
Stage of operation
IN
How discovered
V
Nature of condition
O
Precautionary procedure
K

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

What was found

STA 1140 S10L FAIL-SAFE CHORD CRACKED AT 1 EA FASTENER HOLE. MAJOR REPAIR ACCOMPLISHED: REMOVED DAMAGED PORTION OF CHORD. FABRICATED AND INSTALLED REPAIR PARTS AT STA 1140 BETWEEN S9L & S10L ON THE FAIL SAFE CHORD.