What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
(-23)Aircraft aborted take-off on rwy 4L due to loss of power on no. 2 engine. The engine sustained an uncontained failure of the 2nd stage lpt nozzle assembly whereby all 16 nozzle segments exited the left side of the lpt case. The perforation of the case extened from 0900 to 200 o'clock positions (aft looking fwd). The lpt case also had a 360 degree separation in plane with the 2nd stage lpt nozzle segments at their l/e location. No secondary damage to the a/c airframe and/or flight controls were noted except for the vertical fin fairing directly above the no. 2 engine. All major portions of the uncontained failure were recovered from the runway. No. 2 engine s/n 455276 status: tsn 83701 csn 15374, tslsv 11562 cslsv 1647. Assessment of the failure indicated that the 8 nozzle locks that secure the nozzle segments to the lpt case failed, allowing the nozzle assembly to rotate within the lpt case and eventually breaching the case and expelling the nozzle segments. This incident is closed but overall investigation continues.
As the FAA filed it
(-23)AIRCRAFT ABORTED TAKE-OFF ON RWY 4L DUE TO LOSS OF POWER ON NO. 2 ENGINE. THE ENGINE SUSTAINED AN UNCONTAINED FAILURE OF THE 2ND STAGE LPT NOZZLE ASSEMBLY WHEREBY ALL 16 NOZZLE SEGMENTS EXITED THE LEFT SIDE OF THE LPT CASE. THE PERFORATION OF THE CASE EXTENED FROM 0900 TO 200 O'CLOCK POSITIONS (AFT LOOKING FWD). THE LPT CASE ALSO HAD A 360 DEGREE SEPARATION IN PLANE WITH THE 2ND STAGE LPT NOZZLE SEGMENTS AT THEIR L/E LOCATION. NO SECONDARY DAMAGE TO THE A/C AIRFRAME AND/OR FLIGHT CONTROLS WERE NOTED EXCEPT FOR THE VERTICAL FIN FAIRING DIRECTLY ABOVE THE NO. 2 ENGINE. ALL MAJOR PORTIONS OF THE UNCONTAINED FAILURE WERE RECOVERED FROM THE RUNWAY. NO. 2 ENGINE S/N 455276 STATUS: TSN 83701 CSN 15374, TSLSV 11562 CSLSV 1647. ASSESSMENT OF THE FAILURE INDICATED THAT THE 8 NOZZLE LOCKS THAT SECURE THE NOZZLE SEGMENTS TO THE LPT CASE FAILED, ALLOWING THE NOZZLE ASSEMBLY TO ROTATE WITHIN THE LPT CASE AND EVENTUALLY BREACHING THE CASE AND EXPELLING THE NOZZLE SEGMENTS. THIS INCIDENT IS CLOSED BUT OVERALL INVESTIGATION CONTINUES.
NTSB investigation
The NTSB’s investigation of this event, with its probable cause and findings. Matched to this report by N-number and date.