Service difficulty report · None · Boeing 7378H4

Difficulty date
September 15, 2022
Submitted
October 5, 2022
Operation
Air carrier
Aircraft
N8651A
Make and model
Boeing 7378H4
Aircraft serial
36920
Aircraft time
27,317 hours, 12,717 cycles
Part
None
Condition
Corroded
Location
Fuselage
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

CORROSION ON FLOOR BEAM UPPER CHORD BS 986 LBL45 WL 208 AT NUT PLATE HOLE / [01] VERIFIED APPLICABILITY IAW SRM 53-70-51-1A-1 AND SRM 53-70-51-2R-6 REPAIR 6;[02] REMOVED CORROSION ON FLOOR BEAM UPPER CHORD BS 986 LBL 45 WL 208; IN A 3.2' X 1.1' AREA; ORIGINAL THICKNESS IS 0.150; REMAINING THICKNESS IS 0.115; DAMAGE FOUND TO BE OUT OF LIMITS IAW SRM 53-70-51-1A-1. SRM 53-70-51-2R-6 REPAIR 6 ALTERNATIVE 4 IS APPLICABILITY;[[08] FABRICATED REPAIR STRAP FROM 7075T6#0.100 LOT# 1489800-1; REPAIR ANGLE FROM BAC1490-2887#7075T62 LOT# 1501184-1 AND REPAIR FILLER FROM BAC1505-101474 LOT# 1291736 IAW SRM 53-70-51-2R-6 REPAIR 6 ALTERNATIVE 4 TABLE 204;[15] INSTALLED ALL REPAIR PARTS ON FLOOR BEAM UPPER CHORD BS986; LBL 45; WL 208 IAW SRM 53-70-51-2R-6 REPAIR 6 PARG 4 STEPS (M-R) AND SRM 51-40-02-0G-0;

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