SDR DALA2023052304121

Service difficulty report · Unknown · Boeing 757251

Difficulty date: May 19, 2023
Submitted: May 23, 2023
Operation: Air carrier
Aircraft: N551NW
Make and model: Boeing 757251
Aircraft serial: 26498
Aircraft time: 55,630 hours, 23,931 cycles
System (JASC): 5320 · Fuselage Miscellaneous Structure
Part: Unknown
Condition: Unknown
Location: Unknown
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

SHIP 5651 MAIN CABIN FLOOR STRUCTURE FLOOR PANEL SUPPORT STRUCTURE IS CORRODED AREA BELOW THE RH AFT E&E DOOR AREA APPROX AT STA 1040. CORRECTIVE ACTION: REMOVED CORROSION ON FLOOR SUPPORT STA 1040.0, OUT OF LIMITS IAW B757 SRM 53-40-13. REMOVED AND REPLACED FLOOR SUPPORT USING BASICS 551 IAW SRM 53- 40-13-01-1 FIG 1 ITEM 5 AND RESTORED SURFACE PROTECTION IAW B757 AMM 51-21. (2775028)