N661US — 1989 Boeing 747-451
Active registrationChecked against FAA & NTSB records · as of Jul 21, 2026
N661US appears in 1 NTSB accident record (most recent 2011, no injuries). Registration and accident data compiled from public FAA and NTSB records as of Jul 21, 2026.
Aircraft record
- Serial number
- 23719
- Manufacturer
- Boeing
- Model
- 747-451
- Year
- 1989
- Category
- Fixed wing multi-engine
- Engine
- P&w Pw4000 Ser
- Registration
- Active
- Registered to
- Delta Air Lines Inc — Atlanta, GA
Accident & incident history
The penetration of turbine blade fragments through the rear turbine case, which punctured the No. 4 bearing oil pressure supply tube, allowing misted oil to contact the hot engine case and ignite the undercowl fire. Contributing to the incident was the installation of approved (but not preferred) stage 3 low pressure turbine outer transition duct segments with the riveted rear seal configuration and the failure of the engine design to comply with the engine debris containment requirements of 14 Code of Federal Regulations 33.13 and 33.75.
Registration timeline
Ownership and registration events for this airframe (the 1989 Boeing 747-451).
- Feb 22, 2024registered — Delta Air Lines Inc
Frequently asked
- Has N661US been in an accident?
- Yes. N661US appears in 1 NTSB accident record, the most recent in 2011.
- What kind of aircraft is N661US?
- N661US is a 1989 Boeing 747-451 (fixed wing multi-engine), serial number 23719.
- Who is N661US registered to?
- N661US is registered to Delta Air Lines Inc of Atlanta, GA. Registration status: active.
The full N661US report
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- Complete registration & deregistration timeline, print-ready
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