SDR ASAA2026020364521

Service difficulty report · Shield · Boeing 737990ER

Difficulty date: February 3, 2026
Submitted: February 25, 2026
Operation: Air carrier
Aircraft: N494AS
Make and model: Boeing 737990ER
Aircraft serial: 41729
Aircraft time: 8 hours, 7 cycles
System (JASC): 5320 · Fuselage Miscellaneous Structure
Part: Shield
Part number: 146A812712
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

AFT DOOR CUT OUT, FWD RH SHIELD IS CORRODED. GROUNDED - YES. REMOVED CORROSION, MAX MAT LOSS .027, FOUND TO BE OUT OF LIMITS, REMOVED & REPLACED IAW B737-900ER SRM 53-60-15-1A-1, SRM 51-40-05 & SRM 51-40-02W= 1.5" O= .050 R= .027 L= 3.0" D= .023.