Everyone who flies out of Teterboro has heard the quiet hours. Far fewer know that the airport’s real constraint is a set of decibel limits, and that those limits are different for every runway and every hour of the day. A departure that would be unremarkable at 11 in the morning can be refused on the same aircraft at 11 at night, for one reason: the noise.

This is the Port Authority’s Fly Quiet Program, and it is published in the airport’s own Flight Crew Handbook. The handbook is the document an operator works from, so the rules below are the rules as written, not as summarised.

The limits themselves

Teterboro sets a maximum noise level (MNL) for departures off every runway, measured by the airport’s own noise monitoring system.

Runway or aircraft	Hours	Maximum
Runway 24	22:00 to 07:00 local	80 dB(A)
Runway 24	All other times	90 dB(A)
Runways 01, 19 and 06	At all times	95 dB(A)
Helicopters	At all times	95 dB(A)

Two details matter more than they look.

The quiet limit is 15 decibels below the loud one. Decibels are logarithmic. The difference between 80 dB(A) and 95 dB(A) is about thirty times the sound energy, not fifteen percent more. It is the same reason a whisper and a shout are not six times apart. An operator working to 80 dB(A) at night is working to a fraction of the noise the same aircraft makes on Runway 19 at noon.

Runway 19 is the preferred runway for noise abatement. The handbook says so directly. Runway 19 is the south flow, and it is the runway with the lowest limit at the quietest hours, because the approach and departure paths were laid out to keep aircraft over less of the residential neighbourhoods that surround the airport.

What happens when an aircraft is over the limit

The handbook is unusually blunt about the consequence.

Aircraft that exceed these limits shall be issued a noise violation. Aircraft that have received three (3) noise violations in a two-year span shall not be permitted to operate at TEB.

There is a tolerance built in. The Port Authority’s own summary of the program says a violation is issued when an aircraft exceeds an applicable limit by more than 1.0 dB(A). So a tenth of a decibel over is not a violation, and one decibel over is.

The records are kept for two years and expunged on the second anniversary. Notifications go to the operator by registered mail, and the handbook makes the point that failing to receive the notification is not grounds to dismiss the violation.

Three strikes and the aircraft is off the airport. That is a very large consequence for a business jet operator, because it takes the tail out of the New York market entirely, and the New York market is the reason most of those aircraft exist.

Quiet hours and the voluntary restraint

Alongside the mandatory limits, the program has a voluntary element that people mix up with the curfew.

The quiet hours are 23:00 to 06:00 local, and they are a voluntary restraint of all non-essential aircraft operations. The airport asks operators to hold rather than to fly. It is not a hard prohibition, and the airport says it plainly: the restraint is voluntary, while the maximum noise levels are mandatory.

There is a second, separate window. Between 22:00 and 07:00 local, all aircraft are recommended to use the preferred noise-abatement runways and flight procedures. That is a recommendation, and it is different again from a limit.

The distinction matters when you are reading a quote. A “we can do an 11 pm departure” is not a statement about the curfew. It is a statement about noise, and it should be checked against the aircraft’s noise record, not assumed.

The exemptions, and the honest caveat

The handbook grants two exemptions to the noise plot requirement, and they are narrower than they sound.

Operators may conduct up to two flight tests, or “noise plots,” on any one aircraft at Teterboro. These are the certification runs that establish whether an aircraft meets the airport’s noise criteria in the first place. Permission will not be granted if there is a record of a Second Violation for that aircraft involved.

So the noise plot is how an aircraft earns its place at Teterboro, and the exemption exists because you cannot plot a noise curve without flying. It is not a general exemption from the limits.

There are also two conditional relaxations, and both are worth knowing because they explain why a departure can exceed the number you were quoted:

If Runway 19 is officially closed by NOTAM, the applicable MNL for Runway 24 becomes 95 dB(A).
If the crosswind component at the time of departure on Runway 19 exceeds the maximum allowable crosswind for the aircraft being used, the applicable MNL for Runway 24 becomes 95 dB(A).

Both are safety-driven, and both mean the limit in force depends on the conditions on the day, not only on the time of day.

The two other rules that catch people

The noise program is the visible constraint. Two others sit underneath it and cause more difficulty in practice.

The Permission to Operate form. No jet-powered aircraft may operate at Teterboro without the approval of the Airport Manager. Operators of jet aircraft new to the airport, or who have recently changed owner or operator, must submit a Permission to Operate form. This is a paperwork step for the operator, but it has a scheduling consequence: an aircraft that has not been approved cannot fly the departure time, however much room there is on the ramp.

The 100,000-pound weight restriction. Teterboro prohibits aircraft with actual operating weights over 100,000 pounds on any airport surface. The airport’s own page explains the framing: it is a general aviation reliever airport, and the weight limit keeps the airport from carrying traffic that belongs at the commercial airports. Aircraft capable of exceeding 100,000 pounds must submit certification to Airport Operations verifying that their operating weight is below the limit.

Neither of these is a New York-specific tax or a marketing detail. They are the reasons a particular aircraft is available for a particular slot on a particular evening, and they are why a quote that names the aircraft is worth more than a quote that names a category.

What this means when you book

Three practical things fall out of all this.

Ask about the aircraft, not just the time. A modern light jet and an older heavy jet can have very different noise profiles. The three-strike rule means the operator is managing the aircraft’s record at Teterboro as carefully as you manage your schedule.

Early evening is not the same as late evening. The tightest limit starts at 22:00, an hour before the quiet hours begin. A 9 pm departure has more room than a 10 pm departure, and an 8 pm departure has more than both. If your timing can move at all, moving it earlier is the cheapest de-icing-grade fix available.

Give the operator room. If the plan is a late departure, the operator may want a slightly later departure so the aircraft takes off inside a lower limit, or they may need to reposition earlier. That is not the broker being difficult. It is the noise program.

The other side of it

It is worth saying plainly that this program exists because the airport is surrounded by houses. Teterboro sits in the Meadowlands, hemmed in by residential neighbourhoods in Teterboro, Hasbrouck Heights and Moonachie. The airport runs a noise office, a complaints hotline, an advisory committee of local elected officials, and a school noise-abatement programme, and the Fly Quiet Program is the operating side of that relationship.

The people who live under the flight path are not an abstraction in this story. They are the reason an 80 dB(A) limit exists at all, and the reason a 15-decibel gap between the quiet and loud limits is not a technicality.

What Jake checks

Before a New York departure is confirmed, the specific aircraft and its noise record are checked against the departure time and the runway in use. If the departure is at the edge of a limit window, the airport’s noise office and the operator are consulted directly, because the limit in force is a function of the day’s conditions and NOTAMs as well as the clock.

If you want that checked for a specific date and aircraft, call +1 (862) 485-3510 or request a quote and put the departure time in the notes. The airport’s own documents, the Flight Crew Handbook and the Port Authority’s Teterboro page, are linked below.

Runway or aircraft	Hours	Limit	Energy vs the night limit	Applies to
Runway 24	22:00 to 07:00 local	80 dB(A)	1× (the reference)	Night departures on the south flow
Runway 24	All other times	90 dB(A)	10.0×	Daytime south-flow departures
Runways 01, 19 and 06	At all times	95 dB(A)	31.6×	North flow and the crosswind runway
Helicopters	At all times	95 dB(A)	31.6×	Including the published helicopter routes
All operations	23:00 to 06:00 local	Voluntary restraint	—	Non-essential aircraft operations. The airport asks operators to hold rather than to fly.
All aircraft	22:00 to 07:00 local	Preferential runways	—	Recommended noise-abatement runways and flight procedures.

Teterboro's noise rules