SDR SWAA2022021492552

Service difficulty report · Strip · Boeing 73776N

Difficulty date: April 4, 2018
Submitted: February 14, 2022
Operation: Air carrier
Aircraft: N7731A
Make and model: Boeing 73776N
Aircraft serial: 32677
Aircraft time: 38,714 hours, 18,449 cycles
System (JASC): 5320 · Fuselage Miscellaneous Structure
Part: Strip
Condition: Corroded
Location: Aft Cargo Bay
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*** AFT CARGO BAY; LEFT HAND FLOOR TO SIDEWALL SUPPORT HAS NUMEROUS AREAS OF CORROSION ON UPPER AND LOWER SURFACES; BS727 + 4' TO BS847. / REMOVED; FABRICATED FLOOR TO SIDEWALL SUPPORT FROM BAC 1498-377 #707STE2 LOT# 1332335-3. EXTRUSIONS SPLICED SECTIONS TOGETHER @ B.S 727E+9'. CHRMGAL CONVERSION COATING; PRMED + INSTALLED PER SRM 51-40-02-0G-0; DWG 146A7500; 146A7502; AMM 51-21-41-370-802; AMM 51-21-41-370-804.

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