SDR ASAA2026092869487

Service difficulty report · Channel · Boeing 737990ER

Difficulty date: September 28, 2026
Submitted: November 5, 2026
Operation: Air carrier
Aircraft: N483AS
Make and model: Boeing 737990ER
Aircraft serial: 36350
Aircraft time: 41,122 hours, 12,694 cycles
System (JASC): 5320 · Fuselage Miscellaneous Structure
Part: Channel
Part number: 146A750231
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 CARGO LH TRANSITION FROM STA 727 TO STA 847 CORRODED. GROUNDED - YES. UPON FURTHER INVESTIGATION FOUND L/H TRANSITION STA 807 TO SA 847 NO CORROSION, L/H TRANSITION FROM STA 727 TO STA 816 REPAIRED IAW B737-900ER SRM 53-00-53-2R-5 W= 1, O= 0.040. R= 0, L= 2.00, D= 0.040.