ASTM F2356-05a(2018)

Standard Specification for Production Acceptance Testing System for Lighter-Than-Air Light Sport Aircraft

ABSTRACT
This specification covers production acceptance test requirements for the manufacture of lighter-than-air light sport aircraft. This provides the minimum requirements for the establishment of a ground and flight test program for verifying the initial (first run) production aircraft meets certain operational performance requirement that have been set forth by the manufacturer in its Aircraft Operating Instructions. The minimum requirements to verify that each subsequent production aircraft has no obvious defects that would prevent the safe operation of the aircraft are described. Every production aircraft shall be flight tested to the minimums such as lighter-than-air airships, hot-air balloons and gas/hybrid balloons.
SCOPE
1.1 This specification covers production acceptance test requirements for the manufacture of lighter-than-air light sport aircraft.  
1.2 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.3 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

General Information

• Status: Published
• Publication Date: 31-Oct-2018
• ICS: 49.020 - Aircraft and space vehicles in general
• Technical Committee: F37 - Light Sport Aircraft
• Drafting Committee: F37.60 - Lighter than Air

Relations

• Replaces: ASTM F2356-05a(2013) - Standard Specification for Production Acceptance Testing System for Lighter-Than-Air Light Sport Aircraft
• Effective Date: 01-Nov-2018
• Referred By: ASTM F3060-20 - Standard Terminology for Aircraft
• Effective Date: 01-Nov-2018
• Referred By: ASTM F2355-14(2022) - Standard Specification for Design and Performance Requirements for Lighter-Than-Air Light Sport Aircraft
• Effective Date: 01-Nov-2018
• Referred By: ASTM F2563-16 - Standard Practice for Kit Assembly Instructions of Aircraft Intended Primarily for Recreation
• Effective Date: 01-Nov-2018

Overview

ASTM F2356-05a(2018), "Standard Specification for Production Acceptance Testing System for Lighter-Than-Air Light Sport Aircraft," sets forth the minimum requirements for production acceptance testing during the manufacture of lighter-than-air light sport aircraft. This international standard helps establish consistent ground and flight test programs, ensuring each manufactured aircraft meets the operational performance requirements outlined by the manufacturer and is free from critical defects that could impact safe operation. Covered aircraft types include lighter-than-air airships, hot-air balloons, and gas/hybrid (gas-thermal) balloons.

Key Topics

• Production Acceptance Testing
  The standard describes mandatory ground and flight tests required for both initial and ongoing production aircraft. These tests verify that each lighter-than-air light sport aircraft is compliant with the manufacturer’s Aircraft Operating Instructions.

• Operational Performance Requirements
  Each aircraft must be tested for essential operational parameters, such as control responsiveness, engine and instrument performance, and suspension system integrity, to guarantee safe and reliable operation.

• Testing Processes

  • Lighter-than-Air Airships: Minimum 15-minute flight, including takeoff, landing, control checks, and system verifications.
  • Hot-Air Balloons: Minimum 15-minute static inflation, burner, and system operations verification.
  • Gas/Hybrid Balloons: Full pressure envelope testing, valve, control, and suspension system verification.

• Post-Flight Inspection and Documentation
  Written procedures are required for post-flight inspections and the documentation of test results. Review personnel must sign off on all post-flight documents, and all test data must be properly stored and correlated to specific aircraft.

• Test Failures and Retesting Procedures
  In the event of a test failure, the standard requires a documented review and approval process before any aircraft is released for retesting.

Applications

• Manufacturers of Lighter-Than-Air Aircraft
  This standard is essential for manufacturers of airships, hot air balloons, and hybrid balloons seeking robust, internationally recognized production quality assurance methods.

• Production Quality Assurance
  Ensures that every aircraft delivered to customers has undergone thorough ground and flight acceptance testing, reducing the risk of undetected performance or safety issues.

• Aircraft Certification and Regulatory Compliance
  Supports compliance with global regulations for light sport aircraft by aligning with principles established by the World Trade Organization's Technical Barriers to Trade (TBT) Committee.

• Operational Safety and Customer Confidence
  Provides assurance to operators and consumers that each lighter-than-air sport aircraft meets stringent airworthiness and operational standards prior to registration and flight.

Related Standards

• ASTM F2245 - Standard Specification for Design and Performance of a Light Sport Airplane
• ASTM F2279 - Standard Practice for Quality Assurance in the Manufacture of Aircraft
• ASTM F2417 - Standard Specification for Design and Performance of Light Sport Gyroplanes
• FAA Light Sport Aircraft Airworthiness Standards
• ISO 9126 - Software Product Evaluation (for onboard systems, where applicable)

These related standards collectively support the quality, airworthiness, and safety requirements essential to the lighter-than-air and broader light sport aircraft sectors.

Keywords: lighter-than-air, light sport aircraft, airship, balloon, gas balloon, hot-air balloon, flight testing, production acceptance testing, ASTM F2356, operational performance, airworthiness, quality assurance.

Standards Content (Sample)

This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation: F2356 −05a (Reapproved 2018)
Standard Specification for
Production Acceptance Testing System for Lighter-Than-Air
Light Sport Aircraft
This standard is issued under the fixed designation F2356; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope have been set forth by the manufacturer in its Aircraft
Operating Instructions.
1.1 This specification covers production acceptance test
3.2 In addition, this specification provides minimum re-
requirements for the manufacture of lighter-than-air light sport
aircraft. quirements to verify that each subsequent production aircraft
has no obvious defects that would prevent the safe operation of
1.2 This standard does not purport to address all of the
the aircraft.
safety concerns, if any, associated with its use. It is the
3.2.1 Every production aircraft shall be flight tested to the
responsibility of the user of this standard to establish appro-
following minimums:
priate safety, health, and environmental practices and deter-
3.2.1.1 Lighter-than-Air Airships—Fifteen minutes flight
mine the applicability of regulatory limitations prior to use.
time, including at least one takeoff and landing, trimming of
1.3 This international standard was developed in accor-
flight controls, and verification of control for left turn, right
dance with internationally recognized principles on standard-
turn, ballonet systems (if installed), vectoring systems (if
ization established in the Decision on Principles for the
installed), and instrument/indicator operation.
Development of International Standards, Guides and Recom-
3.2.1.2 Hot Air Balloons—Fifteen minute static inflation at
mendations issued by the World Trade Organization Technical
gross load/ambient temperature, including operational tests of
Barriers to Trade (TBT) Committee.
all vents, valves, burner operation, and suspension system.
3.2.1.3 Gas/Hybrid (Gas—Thermal Type) Balloons—Air
2. Terminology
pressurized inflation to manufacturer’s maximum in-flight
2.1 Definitions:
envelope pressure, including operational tests of all valves,
2.1.1 airship—engine-driven lighter-than-air aircraft that
controls, and so forth. Suspension systems will be static tested
can be steered.
by suspending at gross load to verify all suspension compo-
2.1.2 balloon—lighter-than-air aircraft that is not engine-
nents.
driven, and that sustains flight through the use of either gas
3.3 Post Flight Acceptance:
buoyancy or an airborne heater, or both.
3.3.1 There shall be a written procedure in effect to perform
2.1.3 lighter-than-air aircraft—aircraft that can rise and
post flight inspection that will review all flight critical attach-
remain suspended by using contained gas weighing less than
ments and structures.
the air that is displaced by the gas.
3.3.2 The reviewing personnel shall sign all post flight
2.1.3.1 Discussion—Airships may include dynamic lift that
review documents.
derive as much as 30 % lift from other than buoyancy.
3.4 Documentation—There shall be a written procedure in
effect to properly document and store the production accep-
3. Significance and Use
tance test results such that they are correlated to the specific
3.1
...