Regulation Text
(a) This section applies to propeller-driven, small airplanes having standard airworthiness certificates that are designed for “agricultural aircraft operations” (as defined in § 137.3 of this chapter, as effective on January 1, 1966) or for dispensing fire fighting materials.
(b) If the Airplane Flight Manual, or other approved manual material information, markings, or placards for the airplane indicate that the airplane has not been shown to comply with the noise limits under part 36 of this chapter, no person may operate that airplane, except—
(1) To the extent necessary to accomplish the work activity directly associated with the purpose for which it is designed;
(2) To provide flight crewmember training in the special purpose operation for which the airplane is designed; and
(3) To conduct “nondispensing aerial work operations” in accordance with the requirements under § 137.29(c) of this chapter.
Research Notes
Section 91.815 — Agricultural and fire fighting airplanes: Noise operating limitations — addresses noise compliance for specialized agricultural and fire-fighting aircraft.
Special treatment: Agricultural application aircraft (Air Tractors, etc.) and fire-fighting aircraft (CL-415, Air Tractor 802F, etc.) often operate at low altitudes near population centers. The reg addresses noise compliance considering their special operational requirements.
Operational reality: Most agricultural and fire-fighting aircraft are radial- or turboprop-powered and produce significant noise. The reg provides operational accommodation for these specialized operations.
Reference: Part 36 on noise certification; FAA Order 8900.1 Volume 5 on special operations.
Amendment History
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