SDR SWAA2022032081802

Service difficulty report · Threshold · Boeing 737*

Difficulty date: March 6, 2022
Submitted: March 21, 2022
Operation: Air carrier
Aircraft: N212WN
Make and model: Boeing 737*
Aircraft serial: 32485
Aircraft time: 56,756 hours, 33,873 cycles
System (JASC): 5320 · Fuselage Miscellaneous Structure
Part: Threshold
Condition: Corroded
Location: Fwd 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

FWD LAVATORY THRESHOLD IS CORRODED / [01] REMOVED CORRODED AND INSTALLED NEW FWD LAV THRESHOLD INSERTS IAW CMM 25-00-66 REPAIR 8-1 SECT. 1-3;[02] AFTER FURTHER INSPECTION; FWD LAVATORY THRESHOLD IS NOT CORRODED. INSERTS WERE FOUND TO BE CORRODED UNDER THE THRESHOLD. REMOVED CORRODED AND INSTALLED NEW FWD LAV THRESHOLD INSERTS IAW CMM 25-00-66 REPAIR 8-1 SECT. 1-3;[03] VERIFIED CORRECTIVE ACTIONS 1 AND 2