Aérospatiale-Socata built a prototype of the TB-31 for the French Air Force, which never went to production:

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Source: netAirspace.com, photo by miamiair

What is the purpose of the winglets at the top of the vertical stabilizer?

  • 3
    $\begingroup$ I'd guess those are localizer antenna with an aerodynamic dielectric fairing. Many aircraft are fitted with similar designs $\endgroup$ May 20, 2017 at 17:21
  • $\begingroup$ They are likely VOR antennas. Many Bonanzas and Cessnas have these as well. The V-tails have them on the fuselage under the V. $\endgroup$
    – acpilot
    May 20, 2017 at 18:30

1 Answer 1


What you observe here are VHF nav antennas for a VOR receiver. This antenna design is lower drag than wire whip antennas.

The antenna serves no aerodynamic purpose except to minimize its own drag profile.


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