SDR ASAA2021093036242

Service difficulty report · Threshold · Boeing 737890

Difficulty date: September 30, 2021
Submitted: October 12, 2021
Operation: Air carrier
Aircraft: N557AS
Make and model: Boeing 737890
Aircraft serial: 35176
Aircraft time: 56,562 hours, 16,444 cycles
System (JASC): 5320 · Fuselage Miscellaneous Structure
Part: Threshold
Part number: 146A812325
Condition: Corroded
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

AFT CARGO DOOR THRESHOLD WEB HAS CORROSION DOT: C529. GROUNDED - YES. REMOVED CORR. FROM AFT CARGO DOOR THRESHOLD WEB ORIG THICKNESS .050 IAW B737-800 SRM 53-60-15, MAT LOSSED .008 REMAINING THICKNESS .042 FOUND TO BE OUT OF LIMITS IAW B737-800 SRM 53-60-15,UT GAUGE # T8224K DUE DATE 13/OCT/21. LOCATED, DRILLED, COUNTERSINK AND DEBBURED NEW WEB IAW B737-800 SRM 51-40-05. REMOVED AND REPLACED WITH NEW WEB IAW B737-800 SRM 51-40-02. REMOVED DOT.