SDR FDEA202101030006

Service difficulty report · Web · Boeing 75728A

Difficulty date: January 3, 2021
Submitted: January 6, 2021
Operation: Air carrier
Aircraft: N971FD
Make and model: Boeing 75728A
Aircraft serial: 26277
Aircraft time: 50,724 hours, 17,417 cycles
System (JASC): 5320 · Fuselage Miscellaneous Structure
Part: Web
Part number: 146N8722117
Condition: Corroded
Location: Cabin
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

MAIN CABIN FLOOR SUPPORT WEB HAS MULTIPLE AREAS OF CORROSION AT LBL 58 BETWEEN STA 1635 AND STA 1681. REMOVED CORR ON WEB LBL 58 STA 1635-1681, IAW B757 SRM 51-10-02. ORIG MAT .056 REM .028 LOSS .028 FOUND OUT OF LIMITS, IAW B757 SRM 53-60-15-1A FIG 101. REMOVED, FABRICATED AND INSTALLED NEW WEB IAW B757 SRM 51-40-02, 51-40-05 53-60-15-01 AND BOEING DWG 146N8722 REV BK.

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