D contour — Main Deck Contour Limits

Main deck high / M1H-class. Public letter summary only; ULDR drawings are paywalled and are not copied.

Industry label
D
IATA contour letter
D
Deck
Main Deck
Maximum height
299.7 cm / 118 in
Base width
Not published
Base length
Not published
Where the taper starts
Profile is modelled as rectangular

Permitted width at height

Read as: at the stated height above the pallet or container floor, this is the maximum overall width the build may occupy. A load that exceeds any single row is out of contour, even if it is under the maximum height.

No base width was published for this letter, so no width-at-height section is drawn. A taper is not inferred.

Verification status

Aircraft

Positions accepting this contour are recorded on: B747-400F, B747F, B777F. A main-deck contour is never a lower-deck limit — the same PMC that takes 116 in or 118 in on a freighter main deck is limited to about 64 in in a wide-body passenger belly.

AircraftTypeMain deckLower deck
Boeing 747-400F / 747-400ERFFreighterPosition count not publishedPosition count not published
Boeing 747-8FFreighter34 published positionsPosition count not published
Boeing 777FFreighterPosition count not publishedPosition count not published

ULDs built to D

CodeAlso codedClassMax gross
AMDM1HContainer6,800 kg / 14,991 lb

Work a build against the D contourThe build-up guide takes the pallet step by step so each layer is checked against the contour before release.