ISO 1021:1980
(Main)Aircraft - Engine nacelle fire extinguisher apertures and doors
Aircraft - Engine nacelle fire extinguisher apertures and doors
Relates to openings for the insertion of the nozzles of ground fire extinguishing equipment. If one or more openings are provided, they shall be either round or square in shape and of the following dimensions: Round; the diameter shall be from 1OO mm minimum to 13O mm maximum; Square; the sides of the squares shall be from 1OO mm minimum to 13O mm maximum.
Aéronefs — Ouvertures et portes d'accès aux fuseaux moteurs d'aéronefs pour les extincteurs d'incendie
General Information
- Status
- Published
- Publication Date
- 30-Sep-1980
- Technical Committee
- ISO/TC 20 - Aircraft and space vehicles
- Drafting Committee
- ISO/TC 20 - Aircraft and space vehicles
- Current Stage
- 9093 - International Standard confirmed
- Start Date
- 24-Oct-2023
- Completion Date
- 13-Dec-2025
Overview
ISO 1021:1980 specifies requirements for apertures and doors in aircraft engine nacelles intended for the insertion of nozzles from ground fire-extinguishing equipment. Published by ISO/TC 20 (Aircraft and space vehicles) in 1980, this standard defines acceptable aperture shapes, dimensional limits, and simple door features to ensure reliable, compatible access for ground fire-fighting operations.
Key topics and requirements
- Scope: Apertures and doors in engine nacelles for insertion of ground fire-extinguisher nozzles.
- Shapes allowed: Round or square only.
- Dimensional limits:
- Round apertures: diameter 100 mm minimum to 130 mm maximum.
- Square apertures: side length 100 mm minimum to 130 mm maximum.
- Door features: Apertures may be fitted with spring-loaded inward-opening doors. Doors shall be lipped or beaded to facilitate insertion and withdrawal of the extinguisher nozzle.
- Compatibility focus: Standard standardizes opening geometry to improve interchangeability with ground firefighting nozzles and simplify emergency procedures.
Applications
ISO 1021 is practical for anyone involved in aircraft nacelle design, certification, operations, and ground handling:
- Aircraft manufacturers and nacelle/engine integrators - to design nacelle access openings that are compatible with standard ground extinguishers.
- Aircraft certification and safety engineers - to verify compliance during type certification and safety assessments.
- Maintenance, ground-operations and airport rescue/firefighting planners - to ensure physical compatibility between aircraft access points and firefighting equipment used at airports.
- Nacelle door and hardware suppliers - to specify correct spring-loaded and lipped/beaded door details for serviceability and emergency access.
Practical value
- Ensures consistent, predictable openings across aircraft types for faster ground firefighting response.
- Reduces risk of nozzle misalignment or damage during emergency extinguisher insertion.
- Simplifies design and procurement of ground equipment and nacelle fittings by standardizing dimensions and door features.
Related standards
- Developed by ISO/TC 20 (Aircraft and space vehicles).
- Use alongside broader aircraft fire protection and ground firefighting guidance and local aviation authority regulations (certification and emergency services protocols).
Keywords: ISO 1021, aircraft nacelle, engine nacelle doors, fire extinguisher apertures, ground fire-fighting, nozzle insertion, aircraft standards, nacelle maintenance.
ISO 1021:1980 - Aircraft -- Engine nacelle fire extinguisher apertures and doors
ISO 1021:1980 - Aéronefs -- Ouvertures et portes d'acces aux fuseaux moteurs d'aéronefs pour les extincteurs d'incendie
ISO 1021:1980 - Aéronefs -- Ouvertures et portes d'acces aux fuseaux moteurs d'aéronefs pour les extincteurs d'incendie
Frequently Asked Questions
ISO 1021:1980 is a standard published by the International Organization for Standardization (ISO). Its full title is "Aircraft - Engine nacelle fire extinguisher apertures and doors". This standard covers: Relates to openings for the insertion of the nozzles of ground fire extinguishing equipment. If one or more openings are provided, they shall be either round or square in shape and of the following dimensions: Round; the diameter shall be from 1OO mm minimum to 13O mm maximum; Square; the sides of the squares shall be from 1OO mm minimum to 13O mm maximum.
Relates to openings for the insertion of the nozzles of ground fire extinguishing equipment. If one or more openings are provided, they shall be either round or square in shape and of the following dimensions: Round; the diameter shall be from 1OO mm minimum to 13O mm maximum; Square; the sides of the squares shall be from 1OO mm minimum to 13O mm maximum.
ISO 1021:1980 is classified under the following ICS (International Classification for Standards) categories: 49.100 - Ground service and maintenance equipment. The ICS classification helps identify the subject area and facilitates finding related standards.
ISO 1021:1980 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.
Standards Content (Sample)
International Standard
INTERNATIONAL ORGANIZATION FOR STANDARDIZATION*ME)I(I1YHAPO~HAR OPl-AHM3AL&lR fl0 CTAH~APTbl3ALWl.ORGANISATION INTERNATIONALE DE NORMALISATION
Aircraft - Engine nacelle fire extinguisher apertures and
doors
Akronefs - Ouvertures et portes d ’accks aux fuseaux moteurs d ’akronefs pour les extincteurs d ’incendie
First edition - 1980-10-01
Ref. No. ISO 1021-1980 (EI
U DC 629.7.067.8
Descriptors : aircraft, propellant engines, doors, ports (openings), fire equipment, fire extinguishers, dimensions.
Price based on 1 pagc
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of
national Standards institutes (ISO member bedies). The work of developing Inter-
national Standards is carried out through ISO technical committees. Every member
body interested in a subject for which a technical committee has been set up has the
right to be represented on that committee. International organizations, governmental
and non-governmental, in liaison with ISO, also take part in the work.
Draft International Standards adopted by the technical committees are circulated to
the member bodies for approval before their acceptance as International Standards by
the ISO Council.
International Standard ISO 1021 was developed by Technical Committee ISO/TC 20,
Aircraft and space vehicles, and was circulated to the member bodies in
November 1978.
lt has been approved by the member bodies of the follo
...
Norme internationale
INTERNATIONAL ORGANIZATION FOR STANDARDIZATION.ME)I(CLYHAPO,lIHAR OPI-AHM3ALWlfl l-l0 CTAH~APTbl3AL&lM.ORGANISATION INTERNATIONALE DE NORMALISATION
Aéronefs - Ouvertures et portes d’accès aux fuseaux
moteurs d’aéronefs pour les extincteurs d’incendie
Aircraft - Engine nacelle fire extinguisher apertures and doors
Première édition - 1980-10-01
CDU 629.7.067.8 Réf. no : ISO 1021-1980 (FI
z
Y
Descripteurs : aéronef, moteur de propulsion, porte, accès, matériel d’incendie, extincteur, dimension.
Kl
F
Prix basé sur 1 page
v)
Avant-propos
LIS0 (Organisation internationale de normalisation) est une fédération mondiale
d’organismes nationaux de normalisation (comités membres de I’ISO). L’élaboration
des Normes internationales est confiée aux comités techniques de I’ISO. Chaque
comité membre intéressé par une étude a le droit de faire partie du comité technique
correspondant. Les organisations internationales, gouvernementales et non gouverne-
mentales, en liaison avec I’ISO, participent également aux travaux.
Les projets de Normes internationales adoptés par les comités techniques sont soumis
aux comités membres pour approbation, avant leur acceptation comme Normes inter-
nationales par le Conseil de I’ISO.
La norme internationale ISO 1021 a été élaborée par le comité technique ISO/TC 20,
Aéronautique et espace, et a été soumise aux comités membres en novembre 1978.
Les comités membres des pays suivants l’ont approuvée :
Afrique du Sud, Rép
...
Norme internationale
INTERNATIONAL ORGANIZATION FOR STANDARDIZATION.ME)I(CLYHAPO,lIHAR OPI-AHM3ALWlfl l-l0 CTAH~APTbl3AL&lM.ORGANISATION INTERNATIONALE DE NORMALISATION
Aéronefs - Ouvertures et portes d’accès aux fuseaux
moteurs d’aéronefs pour les extincteurs d’incendie
Aircraft - Engine nacelle fire extinguisher apertures and doors
Première édition - 1980-10-01
CDU 629.7.067.8 Réf. no : ISO 1021-1980 (FI
z
Y
Descripteurs : aéronef, moteur de propulsion, porte, accès, matériel d’incendie, extincteur, dimension.
Kl
F
Prix basé sur 1 page
v)
Avant-propos
LIS0 (Organisation internationale de normalisation) est une fédération mondiale
d’organismes nationaux de normalisation (comités membres de I’ISO). L’élaboration
des Normes internationales est confiée aux comités techniques de I’ISO. Chaque
comité membre intéressé par une étude a le droit de faire partie du comité technique
correspondant. Les organisations internationales, gouvernementales et non gouverne-
mentales, en liaison avec I’ISO, participent également aux travaux.
Les projets de Normes internationales adoptés par les comités techniques sont soumis
aux comités membres pour approbation, avant leur acceptation comme Normes inter-
nationales par le Conseil de I’ISO.
La norme internationale ISO 1021 a été élaborée par le comité technique ISO/TC 20,
Aéronautique et espace, et a été soumise aux comités membres en novembre 1978.
Les comités membres des pays suivants l’ont approuvée :
Afrique du Sud, Rép
...
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