SDR AALA202010209022

Service difficulty report · Transition Panel · Boeing 737823

Difficulty date: October 5, 2020
Submitted: November 16, 2020
Operation: Air carrier
Aircraft: N811NN
Make and model: Boeing 737823
Aircraft serial: 31079
Aircraft time: 33,443 hours, 13,558 cycles
System (JASC): 5320 · Fuselage Miscellaneous Structure
Part: Transition Panel
Condition: Corroded
Location: Bs 500-500i
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

AIRCRAFT IN BASE MAINTENANCE. CORROSION OF LT TRANSITION PANEL BETWEEN STA 500 AND STA 500I AT STR 25L, MEASURING L=3.0 IN, W=2.0 IN, D=0.01 IN. REPLACED TRANSITION PANEL WITH NEW, IAW 53-00-53-2R-5. SUPPLEMENTAL REPORT TO CORRECT SECTION 7 CORROSION LEVEL. HSDA REFLECTS THAT THE LEVEL WAS DETERMINED TO BE A LEVEL 1 DUE TO A PREVIOUS BLEND AND LEVEL 2 WAS DOCUMENTED ON THIS ERPORT IN ERROR.