flight Aircraft

N139WS

LET L-39 Albatros

Operated by NATIONAL TEST PILOT SCHOOL

Tail number
N139WS
Type
L39
Mode-S
A09EA5
Not currently tracked · last seen Jul 10, 16:20 UTC
Flights observed
2
Avg flight time
1h 0m
Typical route
-
Last seen
Jul 10, 16:20 UTC

Last known area

Map centered near N139WS's most recent activity.

Recent flights last 2

DateRouteTakeoffLandingDuration
2026-07-10 - Jul 10, 14:40 UTCJul 10, 16:20 UTC1h 40m
2026-06-23 - Jun 23, 13:50 UTCJun 23, 14:10 UTC20m

Specifications

Registration N139WS
Aircraft type LET L-39 Albatros (L39)
Operator NATIONAL TEST PILOT SCHOOL
Mode-S code A09EA5 · 50117245 (octal)

Looking for transponder-level data? View the Mode-S A09EA5 page for country allocation, callsign history, and ADS-B signal details.

N139WS frequently asked

What type of aircraft is N139WS?
N139WS is a LET L-39 Albatros (ICAO type code L39).
Who operates N139WS?
N139WS is operated by NATIONAL TEST PILOT SCHOOL.
What is the Mode-S transponder code for N139WS?
N139WS broadcasts on Mode-S (ICAO 24-bit) address A09EA5 (octal 50117245). View the transponder page.
Where is N139WS right now?
N139WS is not currently being tracked; last seen Jul 10, 16:20 UTC.