SDR SWAA2021101221635

Service difficulty report · Support · Boeing 737752

Difficulty date: September 20, 2021
Submitted: October 12, 2021
Operation: Air carrier
Aircraft: N7843A
Make and model: Boeing 737752
Aircraft serial: 35786
Aircraft time: 47,875 hours, 24,909 cycles
System (JASC): 5320 · Fuselage Miscellaneous Structure
Part: Support
Condition: Corroded
Location: Fuselage
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

CORROSION ON FORWARD CARGO BAY FLOOR TO SIDEWALL SUPPORT AT BS 500B+15, LBL 24, WL 154. INSTALLED TWO LT FLOOR TO SIDE SUPPORT DOUBLERS IAW SRM 51-40-02 AND DWG 143A7501. FOUND THREE INTERCOSTALS CRACKED UNDER ANGLE LOCATION. RAISED FAULTS TTG8Q006NSXR; TTG8Q006NSXV; TTG8Q006NSTP. INTERCOSTALS REPLACED ON FAULTS TTG8Q006NSXR; TTG8Q006NSXV; TTG8Q006NSTP. INSTALLED ON FORWARD CARGO BAY FLOOR TO SIDEWALL SUPPORT IAW SRM 51-40-02, DWG 143A7500, & DWG 143A7505.