Source: skytamer.com

What is the object on the tail of this F-16 (next to the serial number)?

  • 3
    $\begingroup$ Must be where the jump starter cable goes ;-) $\endgroup$
    – svoop
    Mar 24, 2020 at 17:44
  • 4
    $\begingroup$ Chemtrail Output Valve (portside) $\endgroup$
    – Richard
    Mar 24, 2020 at 20:53
  • 1
    $\begingroup$ @Richard: close. That's the starboard side of the ship. $\endgroup$ Mar 25, 2020 at 0:35

1 Answer 1


enter image description here
Source: primeportal.net; cropped

That's the cooling-air outlet that is aft of the cooling inlet. In between is a power amplifier for the radar-warning system.

enter image description here
Source: amazon.co.uk (one of the product images); cropped

118: Cooling-air ram air intake
124: Radar-warning system power amplifier

Related: What is the device at the tail of the F-16 Block 60?

  • 1
    $\begingroup$ That is a very non-aerodynamic looking inlet duct! Had the design team not heard of NACA? Obviously, it's suitable to purpose, but... wow... $\endgroup$
    – FreeMan
    Mar 25, 2020 at 13:37

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