Service difficulty report · Sidewall Support · Boeing 7377H4

Difficulty date
August 19, 2021
Submitted
September 27, 2021
Operation
Air carrier
Aircraft
N208WN
Make and model
Boeing 7377H4
Aircraft serial
29856
Aircraft time
52,294 hours, 30,932 cycles
Part
Sidewall Support
Condition
Corroded
Location
Bs 500a-500b
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 FWD CARGO BAY BS500A - BS500B RBL23 WL156. ; / [01] AFT RH FLOOR TO SIDEWALL SUPPORT WAS REMOVED ON CUSTOMER CARD:TTG8Q004E8Y8; [02] BLENDED CORROSION ON RH FLOOR TO SIDEWALL SUPPORT FROM BS 500A - BS 500B. REMOVED .021' (IN DEEPEST BLEND) MATERIAL IN A AREA MEASURING .4' X .5'. ORIGINAL THICKNESS IS .040' THEREFORE THE PART IS OUT OF LIMITS BECAUSE MATERIAL REMOVAL EXCEEDS 10% OF MATERIAL THICKNESS PER SRM 53-00-53-1A-2. STEP 4. A (2) FIGURE 103 <BR><BR>PART REQUIRES REPLACEMENT <BR><BR>DEPTH GUAGE USED: <BR>ID:ATS401 <BR>S/N: UNKNOWN <BR>DATE:07/2021 <BR>DUE:07/2022; [03] UPDATED MEASURMENTS; [04] VERIFIED CORRECTIVE ACTIONS 1-3.<BR><BR>PART FOUND TO BE OUT OF LIMITS

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