SDR CALA2023030900655

Service difficulty report · Frame · Boeing 757*

Difficulty date: March 8, 2023
Submitted: March 9, 2023
Operation: Air carrier
Aircraft: N56859
Make and model: Boeing 757*
Aircraft serial: 32818
Aircraft time: 54,028 hours, 17,167 cycles
System (JASC): 5100 · Standard Practices/Structures
Part: Frame
Part number: 146N8520
Condition: Corroded
Location: Sta 1445
Stage of operation: IN
How discovered: O
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

A SMALL FRAME IS EXFOLIATED CORRODED ON ITS AFT SIDE, AT STA 1445 ABOVE STR 27R. AS VIEWED THROUGH THE E-6 RACK DOOR IN THE ALC. 100% MATERIAL LOSS, REMOVED AND REPLACED SMALL FRAME AT STA 1445 S27R IAW B757 SRM 51-40-02 PARA 4, PARA 7, BOEING PROPRIETARY DOC# 146N8520 REV F.