SDR SWAA2021102724525

Service difficulty report · Support · Boeing 7377H4

Difficulty date: September 29, 2021
Submitted: October 27, 2021
Operation: Air carrier
Aircraft: N263WN
Make and model: Boeing 7377H4
Aircraft serial: 32520
Aircraft time: 46,043 hours, 27,465 cycles
System (JASC): 5320 · Fuselage Miscellaneous Structure
Part: Support
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 TO SIDEWALL SUPPORT AT RBL 21; WL 154; BS 727E+18. REMOVED CORROSION ON FLOOR TO SIDEWALL SUPPORT, MEASURES L=0.750, W=0.300, D=0.008'. ORIGINAL 0.040', REMOVED=0.008', REMAINING THICKNESS 0.032'. THE SIDEWALL SUPPORT IS OUT OF LIMITS. IAW SRM 53-00-53-1A-2, ALLOWABLE DAMAGE 2, STEP 4.2A. INSPECTED AND VERIFIED ACTION 1;2. THIS DISCREPANCY WILL ACCOMPLISHED ON CARD TTG8Q006Q898. .

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