Aircraft Noise: El Cajon vs San Marcos
How do aircraft noise rules compare between El Cajon, CA and San Marcos, CA?
San Marcos has fewer restrictions than El Cajon.
El Cajon, CA
San Diego County
El Cajon experiences significant aircraft noise from Gillespie Field (SEE), a public airport within city limits. The airport operates under FAA jurisdiction and the city cannot restrict flight operations. The Airport Land Use Compatibility Plan establishes noise contours and development restrictions.
View full El Cajon rules →San Marcos, CA
San Diego County
Aircraft noise in flight is regulated by the Federal Aviation Administration, not by San Diego County. The County noise ordinance exempts activity preempted by State or federal law (Sec. 36.417(a)(6)). The County's role is land-use compatibility near airports through the San Diego County Regional Airport Authority's Airport Land Use Compatibility Plans.
View full San Marcos rules →Key Facts Comparison
| Fact | El Cajon | San Marcos |
|---|---|---|
| Airport | Gillespie Field (SEE) | - |
| Operator | SD County Airport Authority | - |
| Noise Contours | 60-75 dB CNEL in ALUCP | - |
| Federal Preemption | City cannot restrict flights | - |
| Complaints | Airport Authority noise program | - |
| Primary authority | - | Federal Aviation Administration (FAA) - in-flight aircraft noise |
| County ordinance exemption | - | Activity preempted by State/federal law (Sec. 36.417(a)(6)) |
| Regional land-use body | - | San Diego County Regional Airport Authority (acting as ALUC) |
| Planning tool | - | Airport Land Use Compatibility Plans (ALUCPs) |
| ALUCP scope | - | Land use outside airport boundaries; not aircraft in flight |
| Where to complain | - | Airport noise office / FAA, not the County noise ordinance |
Highlighted rows indicate differences between cities.
El Cajon FAQ
Why is there aircraft noise in El Cajon?
Gillespie Field (SEE) is a public airport within city limits serving general aviation. Aircraft on approach and departure create noise over surrounding neighborhoods.
Can El Cajon limit airport noise?
No. Airport operations are under FAA jurisdiction. The city cannot restrict flight paths, hours, or operations. Voluntary noise abatement procedures encourage pilots to minimize noise.
How do I file an aircraft noise complaint?
File complaints through the San Diego County Regional Airport Authority's noise monitoring program. The Airport Authority tracks noise complaints for Gillespie Field.
San Marcos FAQ
Does San Diego County set decibel limits for aircraft?
No. Aircraft noise in flight is regulated by the FAA, and the County ordinance exempts activity preempted by State or federal law under Section 36.417(a)(6). The County cannot set its own in-flight aircraft noise limits.
What does the County control regarding airports?
Land-use compatibility. The San Diego County Regional Airport Authority, acting as the Airport Land Use Commission, adopts Airport Land Use Compatibility Plans that guide how the unincorporated County approves new development near airports.
Who do I contact about aircraft noise?
Contact the operating airport's noise-abatement office or the FAA. The County noise control officer and Sheriff do not enforce against aircraft operations.
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