CS 31TGB.43 Balloon system controls
ED Decision 2013/011/R
(a) Each control can be operated easily, smoothly, and positively to allow proper performance of its functions. Controls are arranged and identified to prevent confusion or inadvertent operations.
(b) Each control system and operating device is designed and installed in a manner that will prevent jamming, chafing, or unintended interference from passengers or loose items of equipment. The elements of the control system have design features or are distinctly and permanently marked to minimise the possibility of incorrect assembly that could result in failure of the control system.
(c) Control cords
(1) General
(i) All control cords used for flight control are designed and installed to preclude entanglement and inadvertent operation.
(ii) The maximum force required for their operation does not exceed 340 N.
(iii) All control cords used for flight control are long enough to allow an increase of at least 10 % in the vertical dimension of the envelope.
(iv) Arming cords. If an arming device is employed to prevent inadvertent operation of an irreversible control, the part of the device to be handled by the operator is coloured with yellow and black bands.
(2) Venting cords
(i) If a venting cord is used to allow controlled release of the lifting gas and the vent can be resealed in flight, the part of the cord to be handled by the operator is coloured with red and white bands.
(ii) If a further cord is required to re-seal any vent, the part of the cord handled by the operator is coloured white.
(3) Rapid or emergency deflation cords.
(i) If a cord is used for rapid or emergency deflation of the envelope and the device cannot be resealed in flight, the part of the cord to be handled by the operator is coloured red.
(ii) In addition to subparagraph CS 31TGB.43(c)(1)(ii) the force required to operate the emergency deflation cord is not less than 110 N.
Tethered gas balloon controls must be easily operable, preventing confusion or interference. Control systems should avoid jamming and incorrect assembly. Flight control cords must prevent entanglement, operate within force limits, and allow envelope expansion. Specific color-coding is required for venting, arming, and emergency deflation cords to ensure safe operation.
* Summary by Aviation.Bot - Always consult the original document for the most accurate information.
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