Service difficulty report · Attach Angle · Boeing 7377H4

Difficulty date
December 8, 2023
Submitted
January 16, 2024
Operation
Air carrier
Aircraft
N455WN
Make and model
Boeing 7377H4
Aircraft serial
32462
Aircraft time
64,648 hours, 38,599 cycles
Part
Attach Angle
Part number
UNKNOWN
Condition
Corroded
Location
Zn 200 Fus Top
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 FWD ENTRY MOP SILL ATTACH ANGLE BS 319; 338-339 LBL 59 WL 209.<[01] VERIFIED APPLICABILITY OF SRM 53-10-15-1A-1 ALLOWABLE DAMAGE 1;[02] BLENDED AND REMOVED CORROSION AT FWD ENTRY MOP SILL ATTACH ANGLE BS 319 AND BS 338-339 LBL 59 WL 208 IAW SRM 53-10-15-1A-1 FIG 108 (A);[03] REJECTION: CORROSION STILL EXISTS AT FWD ENTRY MOP SILL ATTACH ANGLE BS 319 AND BS 338-339 LBL 59 WL 208. MARKED;[04] THE CORROSION ON FWD ENTRY MOP SILL ATTACH ANGLE BS 319; 338-339 LBL 59 WL 209 WILL BE ACCOMPLISHED ON FAULT [TTG8Q00Q7MSQ];[05] VERIFIED CORRECTIVE ACTION STEP 4. VERIFIED MEASUREMENTS TABLE AND TASK CARD COMPLETE.

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