# ISO 3977-9:1999 — Withdrawn and superseded ISO standards

For ISO 3977-9:1999, item title is Gas turbines — Procurement — Part 9: Reliability, availability, maintainability and safety; status code is 9599; successor is ISO 3977-9:2024; withdrawn / published date is 1999-12-09, recorded from its source on 2026-08-05.

- **Identifier:** ISO 3977-9:1999 _(verified: appears in the quote below)_
- **Item title:** Gas turbines — Procurement — Part 9: Reliability, availability, maintainability and safety _(verified: appears in the quote below)_
- **Status code:** 9599 _(verified: appears in the quote below)_
- **Successor:** ISO 3977-9:2024
- **Withdrawn / published date:** 1999-12-09 _(verified: appears in the quote below)_

## What the source says

> 25143,IS,,ISO 3977-9:1999,"Gas turbines — Procurement — Part 9: Reliability, availability, maintainability and safety","Turbines à gaz — Spécifications pour l'acquisition — Partie 9: Fiabilité, disponibilité, maintenance et sécurité",1999-12-09,1,['27.040'],ISO/TC 192,9599,,[82198],"['en','fr']",25,

## 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Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).