SANTA ANA, CA, USA
N203AA
MCDONNELL DOUGLAS DC-9-82
SHORTLY AFTER TAKEOFF A TTL PWR LOSS WAS EXPERIENCED ON THE NUMBER 1 ENGINE. EXAMINATION OF THE ENGINE REVEALED SUBSTANTIAL DAMAGE OCCURRED IN THE COMPRESSOR SECTION FROM STAGE 6 REARWARD. 40 STAGE 8 COMPRESSOR BLADES WERE FORCED COMPLETELY OUT OF THEIR DISK DOVETAIL SLOTS. OF THE 18 REMAINING BLADES, 17 WERE MISSING THEIR AIRFOILS WHICH HAD FRACTURED JUST ABOVE THE PLATFORM. THE 18TH BLADE WAS FRACTURED THROUGH THE ROOT AREA JUST BELOW THE PLATFORM. METALLURGICAL EXAMINATION OF THE 18TH BLADE DISCLOSED THE BLADE SUSTAINED A DIAGONAL AND TRANSVERSE FRACTURE THROUGH THE ROOT OF THR BLADE PROGRESSING IN HIGH CYCLE FATIGUE FROM THE ORIGIN ALONG THE EDGE OF THE DISK.
Source: NTSB Aviation Accident Database
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