How did C-130s deliver cargo in Vietnam without landing?

Short answer

With LAPES, the low-altitude parachute extraction system: the aircraft doesn't land, but flies with its wheels one to two meters off the ground and then releases the parachutes. A pilot parachute pulls out larger extraction parachutes, which pull the load out of the aircraft. This avoided exposing it to enemy fire.

Published: November 1, 2026 · Updated: November 1, 2026 · Edited by Above Ten Thousand · Editorial policy

How did C-130s deliver cargo in Vietnam without landing?

U S. Air Force airmen from the 374th Logistics Readiness Squadron combat mobility flight load a low cost, low altitude cargo bundle into a C-130 Hercules at Yokota Air Base, Japan, on 131008 F-PM645 050

A Chain of Parachutes

The procedure relies on a sequence of parachutes: a pilot parachute extracts a set of larger extraction parachutes, which pull the load until it comes out of the aircraft. The force of those parachutes overcomes the cargo floor restraints and drags the pallet down the ramp and out of the aircraft. The pilot parachute releases when the pilot raises the aircraft's nose and reaches a wheel height of one to two meters above the ground.

Why It Didn't Land

LAPES allows large loads to be deployed quickly instead of having to land and take off, maneuvers that expose the aircraft to enemy fire.

Khe Sanh

In May 1965, a detachment of the 109th was formed as the 383rd Quartermaster (Aerial Supply) Detachment and sent to Vietnam. Both units provided airdrop and LAPES support during the Battle of Khe Sanh, in the Vietnam War, where the system was used to deliver heavy loads that could not be effectively supplied by conventional parachute drop.