FAR 91.853 — Subsonic Noise Compliance
FAR 91.853 explains the Dec 31, 1999 deadline requiring civil subsonic airplanes in the contiguous U.S. to meet Stage 3, 4, or 5 noise limits.
FAR 91.853 sets the final compliance deadline for noise standards on civil subsonic airplanes operating in the contiguous United States. After December 31, 1999, no one may operate an airplane covered by § 91.801(c) to or from any airport in the lower 48 states unless that airplane has been shown to meet Stage 3, Stage 4, or Stage 5 noise levels.
Key points to remember:
- Applies only to airplanes subject to § 91.801(c) (generally civil subsonic turbojets over 75,000 lbs).
- Geographic scope is the contiguous U.S. — Alaska, Hawaii, and U.S. territories are not covered by this section.
- Older Stage 1 and Stage 2 airplanes can no longer be operated unless they have been hush-kitted, re-engined, or otherwise upgraded to a higher stage.
- A limited exception exists under § 91.873 (special flight authorizations).
Operationally, this rule effectively retired the noisy first- and second-generation jets from U.S. airports, helping reduce community noise around airfields.
Five FAA-written-style questions. Instant explanations, every answer cites its source — no account needed.
You are flying VFR in Class E airspace at 8,500 feet MSL during the day. What are your minimum visibility and cloud clearance requirements?