SDR DALA2026051102952

Service difficulty report · Floor Support · Boeing 757351

Difficulty date: May 11, 2026
Submitted: May 11, 2026
Operation: Air carrier
Aircraft: N586NW
Make and model: Boeing 757351
Aircraft serial: 32987
Aircraft time: 78,047 hours, 26,010 cycles
System (JASC): 5320 · Fuselage Miscellaneous Structure
Part: Floor Support
Condition: Corroded
Location: Zone 200
Stage of operation: IN
How discovered: V
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 OUT OF LIMITS IN STGR LBL 7.55, LBL 2.90, RBL 2.90, RBL 7.55, RBL 10.45 AND RBL 16.10 STA 1330 IAW SRM 53-00-53-1A PROCEDURE 1 ALLOWABLE DAMAGE 1 DETAIL III NOTA C DETAIL IX AND NDT-4-51-00-10 STEP 4. STGR LBL 7.55, LBL 2.90, RBL 2.90, RBL 7.55, RBL 10.45 AND RBL 16.10 STA 1330 WERE REPAIR PER SRM 53-00-53-2R-1- REPAIR 1. (1587520) AIRCRAFT WAS GROUNDED