Federal Aviation Administration, DOT

Section 31.12

(4) From 100 MHz to 8 GHz, use radiated
susceptibility tests at a minimum of 5 V/m.

APPENDIX A TO PART 31 - INSTRUCTIONS FOR
CONTINUED AIRWORTHINESS

[Doc. No. FAA-2006-23657, 72 FR 44028, Aug. 6,
2007]

AUTHORITY: 49 U.S.C. 106(g), 40113, 44701-
44702, 44704.

PART 31 - AIRWORTHINESS STANDARDS: MANNED FREE BALLOONS
Subpart A - General

Subpart B - Flight Requirements
31.12 Proof of compliance.
31.14 Weight limits.
31.16 Empty weight.
31.17 Performance: Climb.
31.19 Performance: Uncontrolled descent.
31.20 Controllability.

Subpart C - Strength Requirements
Loads.
Flight load factor.
Factor of safety.
Strength.

Subpart D - Design Construction
31.31 General.
31.33 Materials.
31.35 Fabrication methods.
31.37 Fastenings.
31.39 Protection.
31.41 Inspection provisions.
31.43 Fitting factor.
31.45 Fuel cells.
31.46 Pressurized fuel systems.
31.47 Burners.
31.49 Control systems.
31.51 Ballast.
31.53 Drag rope.
31.55 Deflation means.
31.57 Rip cords.
31.59 Trapeze, basket, or other means provided for occupants.
31.61 Static discharge.
31.63 Safety belts.
31.65 Position lights.

Subpart E - Equipment
31.71

Function and installation.

Subpart F - Operating Limitations and
Information
spaschal on DSK3GDR082PROD with CFR

Subpart A - General
Section 31.1

Sec.
31.1 Applicability.

31.21
31.23
31.25
31.27

SOURCE: Docket No. 1437, 29 FR 8258, July 1,
1964, as amended by Amdt. 31-1, 29 FR 14563,
Oct. 24, 1964, unless otherwise noted.

31.81 General.
31.82 Instructions for Continued Airworthiness.
31.83 Conspicuity.
31.85 Required basic equipment.

Applicability.

(a) This part prescribes airworthiness
standards for the issue of type certificates and changes to those certificates,
for manned free balloons.
(b) Each person who applies under
Part 21 for such a certificate or change
must show compliance with the applicable requirements of this part.
(c) For purposes of this part - 
(1) A captive gas balloon is a balloon
that derives its lift from a captive
lighter-than-air gas;
(2) A hot air balloon is a balloon that
derives its lift from heated air;
(3) The envelope is the enclosure in
which the lifting means is contained;
(4) The basket is the container, suspended beneath the envelope, for the
balloon occupants;
(5) The trapeze is a harness or is a
seat consisting of a horizontal bar or
platform suspended beneath the envelope for the balloon occupants; and
(6) The design maximum weight is
the maximum total weight of the balloon, less the lifting gas or air.
[Doc. No. 1437, 29 FR 8258, July 1, 1964, as
amended by Amdt. 31-3, 41 FR 55474, Dec. 20,
1976]

Subpart B - Flight Requirements
Section 31.12

Proof of compliance.

(a) Each requirement of this subpart
must be met at each weight within the
range of loading conditions for which
certification is requested. This must be
shown by - 
(1) Tests upon a balloon of the type
for which certification is requested or
by calculations based on, and equal in
accuracy to, the results of testing; and
(2) Systematic investigation of each
weight if compliance cannot be reasonably inferred from the weights investigated.

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