Airliner

N661US

1989 Boeing 747-451

Registered 2 NTSB/FAA records
Built
1989
Serial
23719
Class
Airliner
Engines
4 × Pratt & Whitney PW4000 series
Status
Current as of October 2026
Registered owner
Delta Air Lines Inc (Corporation)
Based
Atlanta, GA
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Registration record

N661US on the FAA register

Type
1989 Boeing 747-451
Serial
23719
Engines
4 × Pratt & Whitney PW4000 series
Registered owner
Delta Air Lines Inc
Atlanta, GA
Certificate issued
2024-02-22
Airworthiness date
1989-12-08
Registration expires
2031-02-28
Airworthiness class
Standard · transport
Mode S (hex)
A8B9C3
Mode S (octal)
52134703
Seats (type)
450
Weight class
20,000 lb and over
Status
Current as of October 2026
Registry history

Timeline

  • 2031-02-28
    Registration expires (renewal due).
  • 2024-02-22
    Certificate of registration issued as N661US.
  • 2011-10-23
    Incident at Detroit, MI; damage: minor.
  • 2002-10-10
    Incident at Anchorage, AK.
  • 1989-12-08
    Airworthiness date on the current FAA record (standard category (transport)).
Overview

About N661US

N661US is a 1989 Boeing 747-451, serial number 23719. The FAA register lists Delta Air Lines Inc as the registrant in Atlanta, Georgia. The current certificate of registration was issued on February 22, 2024 and expires on February 28, 2031.

The FAA aircraft reference file describes the type as an airliner, four Pratt & Whitney PW4000 series engines and 450 seats. Its airworthiness certificate is standard category (transport), dated December 8, 1989.

N661US has 2 accident/incident records on file (most serious damage: minor); details are below.

Safety record

Accident & incident history

2011-10-23 Incident · Detroit, MI Damage: Minor NTSB · ENG12IA003
Reported aircraft: Boeing 747-451
Probable cause: 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.
2002-10-10 Incident · Anchorage, AK NTSB · ANC03IA001
Reported aircraft: Boeing 747-400
Probable cause: The fatigue fracture of the lower rudder power control module manifold, which resulted in a lower rudder hardover.

Sources: NTSB aviation accident database and CAROL case system, FAA preliminary accident & incident notices. Search accident records

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Data: FAA Aircraft Registry (October 2026), including deregistered aircraft; NTSB and FAA accident data; fyiAero listing history. Individual owners' names are shown to signed-in users and street addresses are never shown. Type figures are published specifications, not this aircraft's.