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

N21108

Type: Boeing 757-200 (B752) Mode S Hex: A1BFB2 Operator: United Airlines Status: ACTIVE

Airframe N21108 Key Facts

  • Airframe N21108 (Boeing 757-200) 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 A1BFB2 with manufacturer serial number (MSN) 27298.
N21108 (Boeing 757-200)
Boeing 757-200 · Operated by United Airlines Reference: File Upload Bot (Magnus Manske)
Aviation Spotter Galleries for Tail N21108:
Planespotters.net → JetPhotos → FlightRadar24 Telemetry →

Registry Record

Registration Mark
N21108
Manufacturer Serial Number (MSN)
27298
Mode S 24-bit ICAO Hex
a1bfb2
Registered Owner
United Airlines Inc
Lessor / Financing
AerCap
Estimated Airframe Age
4.0 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 27298 • Hex A1BFB2
2022 OEM Production
Assembled by Boeing
Manufactured as Boeing 757-200 with Manufacturer Serial Number 27298 and assigned ICAO Mode S hex A1BFB2.
2022 Commercial Entry
Delivered into Commercial Service
Accepted into commercial scheduled operations under tail registration N21108.
2025 Asset Financing
Financed by AerCap
Placed under operating lease portfolio with long-term placement agreement and institutional asset management.
2026 (Current) ACTIVE
Operated by United Airlines
Current observed airframe age is 4.0 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