Service difficulty report · Stiffener · Boeing 73776N

Difficulty date
January 22, 2020
Submitted
July 15, 2021
Operation
Air carrier
Aircraft
N7725A
Make and model
Boeing 73776N
Aircraft serial
32671
Aircraft time
45,756 hours, 22,465 cycles
Part
Stiffener
Part number
175A140520
Condition
Corroded
Location
Tail
Stage of operation
IN
How discovered
9
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

VERTICAL FIN RUDDER BALANCE WEIGHT BAY; LOWER WEB STIFFENER HAS CORROSION AT LBL 6 AND RBL 6; AND SEVERAL RIVET BUCKTAILS HAVE CORROSION. / REMOVED RUDDER BALANCE WEIGHT WRAP AROUND SEAL PANEL AND PANEL 324JL; REMOVED AND REPLACED STIFFENER (MPN# 175A1405-20)PER SRM 51-40-02; REINSTALLED PANEL 324JL PER AMM 55-33-31 AND REINSTALLED WRAP AROUND SEAL PANEL AER AMM 27-21-11. SEE WIPS AND SUBTASKS FOR INDIVIDUAL SIGNOFFS

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