SDR AALA202105144738

Service difficulty report · Threshold · Airbus A321231

Difficulty date: March 25, 2021
Submitted: May 14, 2021
Operation: Air carrier
Aircraft: N521UW
Make and model: Airbus A321231
Aircraft serial: 3944
Aircraft time: 39,389 hours, 14,301 cycles
System (JASC): 5320 · Fuselage Miscellaneous Structure
Part: Threshold
Part number: D5347560020400
Condition: Corroded
Location: Zone 100
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: CORRODED AREA AT CORROSION THRESHOLD SHEET AFT CARGO COMPARTMENT LOCATED AT FR 53, STR 38R. L = 0.695 INCHES, W = 0.519 INCHES, D = 0.022 INCHES. REPLACED THRESHOLD SHEET FRAME 55 FRAME 52A AFT CARGO COMPARTMENT PER SRM 51-72-11-911-001.

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