What was found
AIRCRAFT WAS GROUNDED: FLIGHT DECK AND CABIN CREW NOTICED A VERY POTENT SMELL THROUGHOUT AIRCRAFT. NOTICED IT BELOW 10K FEET ON DESCENT AND REMAINED UNTIL SHUTDOWN AT GATE. WHAT COULD BE DESCRIBED AS "BURNING PLASTIC" SMELL. **SUPPLEMENTAL REPORT FOR (AALA202601223423) SUBMITTED 01/26/2026 BY DFW: WHILE PERFORMING J/C 09L00021001, FOUND APU STARTER GENERATOR SHOWING SIGNS OF EXCESSIVE BURNING, PAINT FLAKING, AND STRONG BURNT SMELL. REMOVE AND REPLACED APU STARTER GENERATOR, PER AMM 49-41-21. OPS AND LEAK CHECK GOOD**(CLOSED).