Service difficulty report · Stiffener · Boeing 7377CT

Difficulty date
January 10, 2022
Submitted
January 31, 2022
Operation
Air carrier
Aircraft
N7881A
Make and model
Boeing 7377CT
Aircraft serial
35084
Aircraft time
44,806 hours, 23,070 cycles
Part
Stiffener
Condition
Cracked
Location
Horizontal Stab
Stage of operation
NR
How discovered
9
Nature of condition
O
Precautionary procedure
O

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

What was found

LEFT HAND HORIZONTAL STABILIZER INSPAR RIB; STATION 120.30.; 4TH VERTICAL STIFFENER IS CRACKED. ; / CUT AND REMOVED THE DAMAGE FROM THE 4TH VERTICAL STIFFENER OF THE L/H HORIZONTAL STABILIZER RIB STA 120.30 IAW SRM 55-10-09-2R-4 ; REPAIR 4FABRICATED -3FILLER FROM 7075T6 0.050' LOT#5087747-1 CLAD . AND FABRICATED (2EA) -4 SHIMS FROM 7075T6#0.020' LOT# 1472548-1 ; LOCATE; DRILLED AND APPLIED A CHEMICAL CONVERSION COATING TO ALL REPAIR PARTS IAW SRM 55-10-09-2R-5 REPAIR 5 ; OK TO PRIME; [11] VERIFIED CORRECTIVE ACTION 10; [12] PERFORMED A GENERAL VISUAL INSPECTION OF ALL AREAS WITHIN THE REPAIR AREA (INCLUDING UNDERLYING STRUCTURE ) FOR CORROSION ; EXISTING REPAIRS OR ANY OTHER DEFECTS ; IAW SRM 55-10-09-2R-5 REPAIR 5; [13] VERIFIED CORRECTIVE ACTION 12. NO CORROSION; EXISTING REPAIRS; OR DEFECTS NOTED; [14] APPLIED A CHEMICAL CONVERSION COATING AND PRIMER TO ALL REWORKED AREAS AND ALL REPAIR PARTS IAW SRM 55-10-09-2R-5 REPAIR 5 ; OK TO INSTALL; [15] VERIFIED CORRECTIVE ACTION ENTRY 14.<BR><BR>OK TO INSTALL REPAIR PARTS; [16] INSTALLED REPAIR PARTS AND APPLIED FILLET SEAL TO REPAIR PARTS IAW SRM 55-10-09-2R-5 STEP 4.N - R.; [17] VERIFIED CORRECTIVE ACTION ENTRY 16.; [18] REPAIRED CRACK DAMAGE LEFT HAND HORIZONTAL STABILIZER INSPAR RIB STA120.30; 4TH VERTICAL STIFFENER IAW SRM 55-10-09-2R-5.; [19] VERIFIED CORRECTIVE ACTION ENTRY 18.

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