ASTM F2356-05a(2018)

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
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