ASTM F2425-05a(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: F2425 −05a (Reapproved 2018)
Standard Specification for
Continued Airworthiness System for Weight-Shift-Control
Aircraft
This standard is issued under the fixed designation F2425; 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 4. Monitoring, Investigation, and Remedial Action
4.1 The manufacturer shall maintain contact with owners
1.1 The following continued airworthiness requirements
apply for the manufacture of weight-shift-control aircraft and who report incidents or other situations that relate to safety,
operations, or maintenance of aircraft produced and placed in
their qualification for possible certification.
service. The manufacturer shall promptly investigate all re-
1.2 This specification applies to aircraft seeking civil avia-
ported failures, malfunctions, or defects and develop the
tion authority approval, in the form of flight certificates, flight
appropriate corrective action. The magnitude of the service
permits, or other like documentation.
problem shall define the subsequent publication to the regis-
1.3 This standard does not purport to address all of the
tered owners.
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro-
5. Safety Directives
priate safety, health, and environmental practices and deter-
5.1 A safety directive shall be distributed to all registered
mine the applicability of regulatory requirements prior to use.
owners and appropriate CAAwhen a condition is found to exist
1.4 This international standard was developed in accor-
that may also exist in other aircraft in the fleet and which would
dance with internationally recognized principles on standard-
cause a deviation from original design or unsafe condition for
ization established in the Decision on Principles for the
flight, rendering the aircraft unairworthy. This change, main-
Development of International Standards, Guides and Recom-
tenance procedure, inspection procedure, or other procedures
mendations issued by the World Trade Organization Technical
deemed appropriate by the manufacturer is mandatory and
Barriers to Trade (TBT) Committee.
must be performed and documented in the individual aircraft
logs in order for that aircraft to maintain compliance with
2. Terminology
ASTM standards.
2.1 Acronyms:
5.2 A safety directive shall not be issued to address situa-
2.1.1 AOI—Aircraft Operating Instructions
tions that do not present a safety of flight issue. These
2.1.2 CAA—Civil Aviation Authority situations include, but are not limited to, circumstances in
which service publications are issued to improve or enhance
the following:
3. Registered Operators List Documentation
5.2.1 Spare part sales;
3.1 The manufacturer shall maintain a list of registered
5.2.2 Aircraft performance, capability, or efficiency, unless
aircraft owners that includes all aircraft in service by serial
the change is needed for the aircraft to meet the minimum
number, registration number, together with the name and
design and performance standards identified in the consensus
address of the owner.
standard and the manufacturer’s statement of compliance;
3.2 In cases where the appropriate CAA maintains records
5.2.3 Aircraft appearance;
of registered owners sufficient for tracking aircraft and the
5.2.4 Aircraft maintainability; or
manufacturer has access to such records, the manufacturer may
5.2.5 Anyotheraircraftcharacteristicwhentheactioncalled
elect to utilize such records for complying with this section.
for does not remedy an unsafe condition, including those
related to reliability which do not have an impact on safety of
flight.
This specification is under the jurisdiction of ASTM Committee F37 on Light
6. Service Bulletin Documents
Sport Aircraft and is the direct responsibility of Subcommittee F37.40 on Weight
Shift.
6.1 Service bulletins should be distributed to all registered
Current edition approved Jan. 1, 2018. Published January 2018. Originally
owners by the manufacturer when no unsafe condition exists
approved in 2005. Last previous edition approved in 2009 as F2425 – 05a (2009).
DOI: 10.1520/F2425-05AR18. that could lead to an unairworthy condition, but a service
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
F2425 − 05a (2018)
problem has become repetitive for which the manufacturer has they may do so by making use of the original m
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