The uncontained left engine failure was caused by the failure and liberation of the HPT stage 1 aft blade retainer as a result of a fatigue crack in the upper collet radius that originated from a surface connected cluster of Oxide/Carbonitride/Nitride/Carbide (OCNC) particles. Contributing to the failure of the HPT stage 1 aft blade retainer was an unknown material behavior unique to OCNC clusters in Rene 65 material that are surface connected in highly stressed material that may result in a localized reduction of material fatigue life capability.
N27957
2015 BOEING 787-9
Fixed wing multi engine · Turbo-fan · Standard
1 NTSB record
for this tail number. See the full record below.
Registration
Airframe
Powerplant
Live Flight Status
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Transponder & Tracking
The hex code is the aircraft's ICAO 24-bit address, broadcast by its ADS-B transponder. It is the key used to match live position reports to this registration.
NTSB Accident & Incident Record
May 14, 2024
Incident
Minor Singapore, OF
InjuriesNone
Phase of Flight-
ConditionsVMC
OperationFAR 121
Probable Cause
NTSB ENG24LA014