Service difficulty report · Angle · Boeing 7377H4

Difficulty date
July 10, 2025
Submitted
July 23, 2025
Operation
Air carrier
Aircraft
N963WN
Make and model
Boeing 7377H4
Aircraft serial
36676
Aircraft time
44,502 hours, 27,369 cycles
Part
Angle
Condition
Corroded
Location
Zone 100
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

AFT CARGO LT ZEE ANGLE HAS CORROSION AROUND SEVERAL FASTENERS HOLES, BS 727A - 767. REMOVED CORROSION & VERIFIED WITH A 10X POWER MAGNIFYING GLASS IAW SRM 53-00-53-1A-2. EVALUATED REWORKED AREA LT BS 727A - 747+18' WITH ORIGINAL THICKNESS 0.040'; REMAINING THICKNESS: 0.034, LOSS: 0.006. MAXIMUM OF 0.10T DEPTH OF MATERIAL REMOVED ON ALLOWABLE DAMAGE, OUT OF LIMITS IAW SRM 53-00-53-1A-2. EVALUATED REWORKED AREA, ORIGINAL THICKNESS 0.040. REMAINING THICKNESS: 0.038, LOSS: 0.002. MAXIMUM OF 0.10T DEPTH OF THE MATERIAL THAT IS REMOVED ON ALLOWABLE DAMAGE. WITHIN LIMITS IAW SRM 53-00-53-1A-2. REMOVED AFT CARGO ZEE ANGLE. FABRICATED & INSTALLED NEW ZEE ANGLE.

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