# ISO 2026:1974 — Withdrawn and superseded ISO standards For ISO 2026:1974, item title is Aircraft — Connections for starting engines by air; status code is 9599; successor is ISO/NP 2026 | ISO 2026:2020; withdrawn / published date is 1974-11-01, recorded from its source on 2026-08-05. - **Identifier:** ISO 2026:1974 _(verified: appears in the quote below)_ - **Item title:** Aircraft — Connections for starting engines by air _(verified: appears in the quote below)_ - **Status code:** 9599 _(verified: appears in the quote below)_ - **Successor:** ISO/NP 2026 | ISO 2026:2020 - **Withdrawn / published date:** 1974-11-01 _(verified: appears in the quote below)_ ## What the source says > 6796,IS,,ISO 2026:1974,Aircraft — Connections for starting engines by air,Aéronefs — Raccords pour le démarrage à l'air des moteurs,1974-11-01,1,"['49.100','49.080']",ISO/TC 20/SC 9,9599,,"[66045,76576]","['en','fr']",4,"

Specifies the dimensions which are necessary to ensure international interchangeability of connectors with adaptors. Also gives the minimum clearances required on the aircraft to provide adequate access for the ground adaptor. The basic dimensions and tolerances for connections on aircraft and the minimum clearances around the connector, on the aircraft, are given in figure 1 and table 1 and figure 2 and table 2, respectively.

" ## Source - https://isopublicstorageprod.blob.core.windows.net/opendata/_latest/iso_deliverables_metadata/csv/iso_deliverables_metadata.csv Last verified: 2026-08-05. Review by: 2027-02-01. Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).