Operational Brevity words, BFM terminology, and Military Aviation Acronyms

Glossary terms starting with "D"



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Daisy Chain

Numerous fighters in-trail maneuvering for shots on one another.

DBA

Adjusted (human ear response) Decibels

dc, DC

Direct Current

DCC

Dedicated Crew Chief

DEAD

Destruction of enemy air defenses

Deadeye

Informative call by an airborne laser designator indicating the laser is inoperative.

DEEC

Digital Electronic Engine Control

Defensive (Spike/Missle/Sam/Mud/Aaa)

Aircraft is in a defensive position and maneuvering with reference to the stated condition. If no condition stated maneuvering is with respect to A/A threat.

Defensive Maneuvering

Maneuvers designed to negate the attack/ordnance of a threat.

Defensive Spiral

A descending, accelerating dive using high G and continuous roll to negate an attack and gain lateral separation.

Defensive Turn

A planned turn designed to prevent an attacker from entering/ remaining in the defender's vulnerable cone. This maneuver has limitations since it may allow arcing; however, done early enough and properly executed, allows defender to keep sight, makes attacker's BFM problem more difficult, and may cause attacker to overshoot.

DELTA-P

Differential Pressure Indicator

Deploy

Directive for the flight to maneuver to briefed positioning.

DFLCC

Digital FLight Control Computer

DI

Drag Index

DIA

Diameter

DIFF

Differential

Dirty

Aircraft configured for landing with gear and flaps down.

Dirty-up

Lower the aircraft landing gear

DIS

Disable

DISC

Disconnect

Disengage

Discontinue the current attack.

Divert

Proceed to alternate mission/base.

DLZ

Dynamic launch zone.

DME

Distance Measuring Equipment

Dmpi

Desired mean point of impact.

DMT

Dual Mode Transmitter

DN

Down

Dolly

Data link equipment

Dope

Directive to "delay the engagement."

Downtown

From the 1960s song by Petula Clark, meaning any enemy target area where lots of anti-aircraft opposition can be expected. During the Vietnam War, flying missions into the Hanoi-Haiphong complex in North Vietnam, which was defended by multiple SAM and conventional AAA sites, was referred to as “Going Downtown.” Any hazardous mission, “We’re going downtown to Baghdad.”

DR

Dead reckoning; navigation technique estimating position based on last known position, heading, speed, and time.

Drag/Dragging (Direction)

Bogey/Bandit maneuvering to 60 degress or less aspect.

DSG RS

Designate/Return to Search

DTOS

Dive Toss

DTU

Data Transfer Unit

Duke It Out

Meet the enemy head on to engage.

DVAL

D-Value

DWAT

Descent Warning After Takeoff