LIVE DATA
Telemetry Active
Today 2026-09-17
Data refreshed 00:00 UTC
Refresh in 04:59

N121DU

Type: Airbus A220-100 (BCS1) Mode S Hex: A057C7 Operator: Delta Air Lines Status: ACTIVE

Airframe N121DU Key Facts

  • Airframe N121DU (Airbus A220-100) was last observed on 2026-09-17 at monitored terminal (Global Airspace).
  • Current operational status is classified as ACTIVE with 0 consecutive days unobserved.
  • Registered Mode S 24-bit transponder address is A057C7 with manufacturer serial number (MSN) 50040.
N121DU (Airbus A220-100)
Airbus A220-100 · Operated by Delta Air Lines Reference: Coldstreamer20
Aviation Spotter Galleries for Tail N121DU:
Planespotters.net → JetPhotos → FlightRadar24 Telemetry →

Registry Record

Registration Mark
N121DU
Manufacturer Serial Number (MSN)
50040
Mode S 24-bit ICAO Hex
a057c7
Registered Owner
Bank Of Utah Trustee
Lessor / Financing
AerCap
Estimated Airframe Age
7.6 years
Resolution Confidence
HIGH

Observation & Telemetry State

Current Status
ACTIVE
First Observed Date
2020-01-01
Last Observed Date
2026-09-17
Last Observed Airport
Unassigned Airspace
Days Without Observed Flight
0 days

Airframe Lifecycle & Genealogy History

MSN 50040 • Hex A057C7
2018 OEM Production
Assembled by Airbus
Manufactured as Airbus A220-100 with Manufacturer Serial Number 50040 and assigned ICAO Mode S hex A057C7.
2018 Commercial Entry
Delivered into Commercial Service
Accepted into commercial scheduled operations under tail registration N121DU.
2021 Asset Financing
Financed by AerCap
Placed under operating lease portfolio with long-term placement agreement and institutional asset management.
2026 (Current) ACTIVE
Operated by Delta Air Lines
Current observed airframe age is 7.6 years. Telemetry active across global ADS-B tracking corridors.

90-Day Observed Activity Strip

Daily flight activity observations over the previous 90-day window.

Observed ADS-B Signal Unobserved / On Ground

Observed Flight Corridor History

CYYZ-KATLKATL-KLAXKLAX-KJFK